Abstract
Despite its essential role for food security, vast geographical distribution, high nutritional value, and considerable trade, very few improved genotypes of taro (Colocasia esculenta (L.) Schott) are available to farmers. This review present an update on taro’s origin, wild relatives, domestication, diversity, preservation of germplasm, breeding history, objectives, methods and breeding strategies. Poor flowering of cultivars is the main factor limiting hybridization. For decades, it was thought that cultivars were sterile and could not produce seeds due to high ploidy or mutations inhibiting their sexuality. Taro diversity has been explored with different molecular markers, with no congruence between morphological and molecular groupings. Poor correlations between traits measured in seminal and first clonal generation, as well as heterogeneity of planting material, affect accurate phenotyping and slow down breeding cycles. Most efforts have been oriented towards taro leaf blight tolerance. The high diversity found within the pathogen (Phytophtora colocasiae Raciborski) favours the development of horizontal resistance. Breeding programs achievements have been constrained by: (i) Limited project funds oriented towards the development of expensive molecular tools rather than breeding activities, (ii) Absence of long-term commitments from research institutions, and (iii) Poor international cooperation. Encouraging results have been obtained through the exchange of germplasm and will pave the way to future breeding developments, long overdue to farmers, especially in Africa. Future directions to assist breeders are outlined and discussed.
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References
Ackah FK, van der Puije GC, Moses E (2014) First evaluation of taro (Colocasia esculenta) genotypes against leaf blight (Phytophthora colocasiae) in Ghana. HortFlora Res Spectrum 3:390–391
Aditika KB, Singh S, Kumar P (2021) Taro (Colocasia esculenta); Zero wastage orphan food crop for food and nutritional security. S Afr J Bot 145:157–169. https://doi.org/10.1016/j.sajb.2021.08.014
Ahmed I, Biggs PJ, Matthews PJ, Collins LJ, Hendy MD, Lockhart PJ (2012) Mutational dynamics of aroid chloroplast genome. GBE, Gen Biol Evol 4:1316–1323. https://doi.org/10.1093/gbe/evs110
Ahmed I, Matthews PJ, Biggs PJ, Naeem M, McLenachan PA, Lockhart PJ (2013) Identification of chloroplast genome loci suitable for high-resolution phylogeographic studies of Colocasia esculenta (L.) Schott (Araceae) and closely related taxa. Mol Ecol Res 13:929–937. https://doi.org/10.1111/1755-0998.12128
Ahmed AI, Lockhart J, Agoo EMG, Naing KW, Nguyen DV, Medhi DK, Matthews PJ (2020) Evolutionary origins of taro (Colocasia esculenta) in Southeast Asia. Ecol Evol 10:13530–13543. https://doi.org/10.1002/ece3.6958
Alexandra S, Jamora N, Smale M, Ghanem ME (2020) The tale of taro leaf blight: a global effort to safeguard the genetic diversity of taro in the Pacific. Food Sec 1:1005–1016. https://doi.org/10.1007/s12571-020-01039-6
Amadi CO, Onyeka J, Chukwu GO, Okoye BC (2015) Hybridization and Seed Germination of Taro (Colocasia Esculenta) in Nigeria. J Crop Imp 29:106–116. https://doi.org/10.1080/15427528.2014.980023
Bammite D, Matthews PJ, Dagnon DY, Agbogan A, Agre P, Akintayo TO, Odah K, Dansi A, Abberton M, Tozo K (2021) Genetic and morphological diversity in Colocasia esculenta and Xanthosoma maffafa in Togo, West Africa. Adv Hort Sci 35:255–267. https://doi.org/10.36253/ahsc9689
Bellinger MR, Paudel R, Starnes S, Kambic L, Kantar MB, Wolfgruber T, Lamour K, Geib S, Sim S, Miyasaka SC, Helmkampf M, Shintaku M (2020) Taro genome assembly and linkage map reveal QTLs for resistance to taro leaf blight. Genes/Genomes/Genetics G3:2763–2775. https://doi.org/10.1534/g3.120.401367
Bennett MD, Leitch IJ (2004) Angiosperm DNA C-values database (release 5.0, Dec. 2004). http://www.kew.org/cvalues/homepage.html
Boampong R, Aboagye LM, Nyadanu D, Esilfie M (2018) Agro-morphological characterization of some taro (Colocasia esculenta (L.) Schott.) germplasms in Ghana. J Plant Breed Crop Sci 10:191–202. https://doi.org/10.5897/JPBCS2018.0734
Caillon S, Quero-García J, Lescure JP, Lebot V (2006) Nature of taro (Colocasia esculenta (L.) Schott) genetic diversity prevalent in a Pacific Ocean island, Vanua Lava. Vanuatu Gen Res Crop Evol 53:1273–1289. https://doi.org/10.1007/s10722-005-3877-x
Chaïr H, Traoré RE, Duval MF, Rivallan R, Mukherjee A, Aboagye LM, Van Rensburg WJ, Andrianavalona V, De Pinheiro Carvalho MAA, Saborio F, Sri Prana M, Komolong B, Lawac F, Lebot V (2016) Genetic diversification and dispersal of Taro (Colocasia esculenta (L.) Schott). PLoS ONE 11(6):1–19. https://doi.org/10.1371/journal.pone.0157712
Champagne A, Legendre L, Lebot V (2009) Chemotype profiling to guide breeders and explore traditional selection of root crops in Vanuatu, South Pacific. J Agric Food Chem 57:10363–10370. https://doi.org/10.1021/jf903321e
Champagne A, Legendre L, Lebot V (2013) Biofortification of taro (Colocasia esculenta) through breeding for increased contents in carotenoids and anthocyanins. Euphytica 194:125–136. https://doi.org/10.1007/s10681-013-0980-5
Cheema DS, Singh H, Dhatt AS, Sidhu AS, Garg N (2007) Studies on genetic variability and correlation for yield and quality traits in Arvi [Colocasia esculenta (L.) Schott]. Acta Hort 75:255–260. https://doi.org/10.17660/ActaHortic.2007.752.41
Cho JJ (2004) Breeding Hawaiian taro for the future. In: Guarino L, Taylor M, Osborn T (Eds.), Proceedings of the 3rd Taro Symposium. Nadi, Fiji. SPC:192–196
Coates DJ, Yen DE, Gaffey PM (1988) Chromosome variation in taro, Colocasia esculenta: implications for origin in the Pacific. Cytologia 53:551–560. https://doi.org/10.1508/CYTOLOGIA.53.551
CTAHR (2009) CTAHR and Taro: Taro research by the College of Tropical Agriculture and Human Resources Background paper. Univ of HI, Honolulu, Hawaii, p 37
Dai HJ, Zhang YM, Sun XQ, Xue JY, Li MM, Cao MX, Shen XL, Hang YY (2016) Two-step identification of taro (Colocasia esculenta cv. Xinmaoyu) using specific psbE-petL and simple sequence repeat-sequence characterized amplified regions (SSR-SCAR) markers. Gen Mol Res 15:1676–1680. https://doi.org/10.4238/gmr.15038108
Das AB, Das A, Pradhan C, Naskar SK (2015) Genotypic variations of ten Indian cultivars of Colocasia esculenta var. antiquorum Schott evident by chromosomal and RAPD markers. Caryologia 68:44–54. https://doi.org/10.1080/00087114.2015.1013335
Dong W, He F, Jiang H, Liu L, Qiu Z (2021) Comparative transcriptome sequencing of taro corm development with a focus on the starch and sucrose metabolism pathway. Front Genet 12:771081. https://doi.org/10.3389/fgene.2021.771081
Donkor EF, Nyadanu D, Akromah R, Osei K (2020) Genotype-by-environment interaction and stability of taro [Colocasia esculenta (L.) Schott.] genotypes for yield and yield components. Ecol Gene Genom 17:100070. https://doi.org/10.1016/j.egg.2020.100070
Donkor EF, Nyadanu D, Akromah R, Osei K (2021) Genetic control and assessment of breeding value of selected exotic and local genotypes of taro (Colocasia esculenta) for yield and yield components. Euphytica 217:92. https://doi.org/10.1007/s10681-021-02828-6
Doungous O, Kalendar R, Adiobo A, Schulman AH (2015) Retrotransposon molecular markers resolve cocoyam (Xanthosoma sagittifolium) and taro (Colocasia esculenta) by type and variety. Euphytica 206:541–554. https://doi.org/10.1007/s10681-015-1537-6
Ebert AW, Waiqanabete LM (2018) Conserving and sharing taro genetic resources for the benefit of global taro cultivation: a core contribution of the centre for pacific crops and trees. Biopreserv Biobank 16:361–367. https://doi.org/10.1089/bio.2018.0017
FAOSTAT (2022) Crops production database. www.fao.org. Accessed July 20th 2022.
Ferraren OD (2013) Control of flowering, seed germination and progeny evaluation of taro Colocasia esculenta (L.) Schott. NAST Trans Philippines 56:646–666
Fonofoti P, Tofinga MP, Hunter DG (2008) Screening a cycle 1 breeding population of taro (Colocasia esculenta (L.) Schott) for resistance to taro leaf blight in Samoa. Res J Biol Sci 33:888–891
Fufa TW, Oselebe HO, Nnamani CV, Afiukwa CA, Uyoh EA (2021) Systematic review on farmers’ perceptions, preferences and utilization patterns of Taro [Colocasia esculenta (L.) Schott] for Food and Nutrition Security in Nigeria. J Plant Sci 9(224–233):0020. https://doi.org/10.11648/j.jps.20210904.23
Fujimoto T (2009) Taro (Colocasia esculenta [L.] Schott) Cultivation in vertical wet-dry environments: farmers’ techniques and cultivar diversity in Southwestern Ethiopia. Eco Bot 63:152–166. https://doi.org/10.1007/s12231-009-9074-7
Fukino N, Hanada K, Ajisaka H, Sakai J, Iirochika H, Iirai M, Hagi T (2000) Transformation of Taro (Colocasia esculenta Schott) Using Particle Bombardment. JARQ 34:159–165
Fullagar R, Field J, Denham T, Lentfer C (2006) Early and mid-Holocene tool use and processing of taro (Colocasia esculenta), yam (Dioscorea sp.) and other plants at Kuk Swamp in the highlands of Papua New Guinea. J Archae Sci 33:595–614. https://doi.org/10.1016/j.jas.2005.07.020
Ganança JFT, Freitasi JGR, Nobregai HGM, Rodrigues V, Antunesi G, Gouveia CSS, Chaïr H, Pinheiro de Carvalho MAA, Lebot V (2017) Screening for drought tolerance in Thirty Three Taro Cultivars. Not Bot Hort Agrobot 45:65–74. https://doi.org/10.15835/nbha46110950
NCBI GenBank (2022) https://www.ncbi.nlm.nih.gov/data-hub/taxonomy/4460/
Gerrano AS, Van Rensburg WSJ, Adebola PO, Manjeru P, Bairu MW, Venter SJ (2019) Evaluation and selection of taro [Colocasia esculenta (L.) Schott] accessions under dryland conditions in South Africa. Acta Agric Scand, Sect B 69:219–227. https://doi.org/10.1080/09064710.2018.1530296
Grimaldi IM, Leke WN, Borokini I, Wanjama D, Van Andel T (2018) From landraces to modern cultivars: field observations on taro Colocasia esculenta (L.) Schott in sub-Saharan Africa. Gen Res Crop Evol 65:1809–1828. https://doi.org/10.1007/s10722-018-0651-4
He XL, Miyasaka SC, Fitch MMM, Moore PH, Zhu YJ (2008) Agrobacterium tumefaciens-mediated transformation of taro (Colocasia esculenta (L.) Schott) with a rice chitinase gene for improved tolerance to a fungal pathogen Sclerotium rolfsii. Plant Cell Rep 27:903–909. https://doi.org/10.1007/s00299-008-0519-8
He X, Miyasaka SC, Fitch MMM, Khuri S, Zhu YL (2013) Taro (Colocasia esculenta) transformed with a wheat oxalate oxidase gene for improved resistance to taro pathogen Phytophthora colocasiae. HortScience 48:22–27. https://doi.org/10.21273/HORTSCI.48.1.22
Helmkampf M, WolfgruberTK BMR, Paudel R, Kantar MB, Miyasaka SC, Kimball HL, Brown A, Veillet A, Read A, Shinta M (2018) Phylogenetic Relationships, Breeding Implications, and Cultivation History of Hawaiian Taro (Colocasia esculenta) Through Genome-Wide SNP Genotyping. J Heredity 109:272–282. https://doi.org/10.1093/jhered/esx070
Hirai M, Sato T, Takayanagi K (1989) Classification of Japanese cultivars of taro (Colocasia esculenta (L.) Schott) based on electrophoretic pattern of the tuber proteins and morphological characters. Jap J Breed 39:307–317. https://doi.org/10.1270/jsbbs1951.39.307
Hollyer JR, Sato DM (1990) Proceedings of Taking Taro Into the 1990s: a Taro conference. CTAHR, Univ Hawaii, Res Ext Series 114:49–50
Hu C, Huang XF, Ke WD, Ding Y (2009) Characterization of 11 new microsatellite loci in taro (Colocasia esculenta). Mol Ecol Res 9:582–584. https://doi.org/10.1111/j.1755-0998.2008.02441.x
Hunt HV, Moots HM, Matthews PJ (2013) Genetic data confirms field evidence for natural breeding in a wild taro population (Colocasia esculenta) in northern Queensland, Australia. Gen Res Crop Evol 60:1695–1707. https://doi.org/10.1007/s10722-012-9952-1
IPGRI (1989) Descriptors for taro (Colocasia esculenta). International Plant Genetic Resources Institute, Rome, Italy
Iramu E, Wagih ME, Singh D (2009) Genetic hybridization among genotypes of Taro (Colocasia esculenta) and recurrent selection for leaf blight resistance. Ind J Sci Techno 3:96–101. https://doi.org/10.17485/ijst/2010/v3i1/29656
Irwin SV, Kaufusi P, Banks K, de la Peña R, Cho JJ (1998) Molecular characterization of taro (Colocasia esculenta) using RAPD markers. Euphytica 99:183–189. https://doi.org/10.1023/A:1018309417762
Ivančič A, Lebot V (1999) Botany and genetics of New Caledonian wild taro Colocasia esculenta. Pacific Sci. (Univ Hawaii) 53:273–285
Ivančič A, Lebot V (2000) Taro (Colocasia esculenta): Genetics and Breeding. CIRAD, Montpellier, France
Ivančič A, Quero-García J, Lebot V (2003) Development of visual tools for selecting qualitative corm characteristics of taro (Colocasia esculenta (L.) Schott). Aust J Agric Res 54:581–588. https://doi.org/10.1071/AR02182
Ivančič A, Lebot V, Roupsard O, Quero-García J, Okpul T (2004a) Thermogenic flowering of taro (Colocasia esculenta (L.) Schott, Araceae). Can J Bot 82:1557–1565. https://doi.org/10.1139/b04-118
Ivančič A, Quero-García J, Lebot V (2004b) Genetically controlled branching corms of taro (Colocasia esculenta). NZ J Crop Hort Sci 32:167–177. https://doi.org/10.1080/01140671.2004.9514293
Ivančič A, Liloqula R, Levela H, Saelea J (1992a) Effect of alomae-bobone virus complex on young taro seedlings and other aroid species in controlled conditions. In: Ferentinos, L. (Eds.), RES-140. 7 p. http://hdl.handle.net/10125/4298.
Ivančič A, Liloqula R, Levela H, Saelea J, Wagatora D (1992b) Genetic resistance to alomaebobone virus complex, the lethal disease of taro (Colocasia esculenta (L.) Schott). In: Ferentinos, L. (Ed.), RES-140. 8 p. http://hdl.handle.net/10125/4094.
Jackson GVH (2010) Edible Aroid Conservation Strategies. Crop Trust, Berlin, Germany, p 67p
Jackson GVH, Pelomo PM (1980) Breeding for resistance to diseases of taro (Colocasia esculenta) in the Solomon Islands. IFS Prov Report 5:287–298
Jackson GVH, Ball EA, Arditti J (1977) Seed germination and seedling proliferation of taro (Colocasia esculenta (L.) Schott) in vitro. J Hort Sci 52:169–171. https://doi.org/10.1080/00221589.1977.11514743
Jackson GVH (2020) Taro leaf blight – My 50-year part in its downfall. https://www2.pestnet.org/wp-content/uploads/2021/02/taro-leaf-blight.pdf
Jianchu X, Yongping Y, Yingdong P, Ayad WG, Eyzaguirre PB (2001) Genetic diversity in taro (Colocasia esculenta Schott, Araceae) in China: an ethnobotanical and genetic approach. Eco Bot 55:14–31. https://doi.org/10.1007/BF02864543
Kokubugata G, Konishi T (1999) Implication of a basic chromosome number of x = 14 in seven cultivars of two varieties of Colocasia esculenta by flourescent in situ hybridisation using rDNA probe. Cytologia 64:77–83. https://doi.org/10.1508/cytologia.64.77
Kreike CM, van Eck HJ, Lebot V (2004) Genetic diversity of taro, Colocasia esculenta (L.) Schott, in South-East Asia and the Pacific. Theo Appl Gen 109:761–768. https://doi.org/10.1007/s00122-004-1691-z
Kristl J, Ivančič A, Mergeduš A, Sem V, Kolar M, Lebot V (2016) The variation of nitrates within Taro (Colocasia esculenta) corms. J Food Comp Anal 47:76–81. https://doi.org/10.1016/j.jfca.2016.01.007
Kristl J, Sem V, Merguduš A, Zavišek M, Ivančič A (2021) Variation in oxalate content among corm parts, harvest time, and cultivars of Taro (Colocasia esculenta (L) Schott). J Food Comp Anal 102:104001. https://doi.org/10.1016/j.jfca.2021.104001
Kuruvilla KM, Singh A (1981) Karyotypic and electrophoretic studies on Taro and its origin. Euphytica 30:405–413. https://doi.org/10.1007/BF00034004
Lakhanpaul S, Velayudhan KC, Bhat KV (2003) Analysis of genetic diversity in Indian taro [Colocasia esculenta (L.) Schott] using random amplified polymorphic DNA (RAPD) markers. Gen Res Crop Evol 50:603–609. https://doi.org/10.1023/A%3A1024498408453
Lebot V, Aradhya KM (1991) Isozyme variation in taro Colocasia esculenta (L.) Schott from Asia and Oceania. Euphytica 56:55–66. https://doi.org/10.1007/BF00041744
Lebot V, Legendre L (2014) HPTLC screening of taro hybrids (Colocasia esculenta (L.) Schott) with high flavonoids and antioxidants contents. Plant Breed 134:129–134. https://doi.org/10.1111/pbr.12225
Lebot V, Herail C, Gunua T, Pardales JR, Prana MS, Thongjiem M, Viet NV (2003) Isozyme and RAPD variation in Phytophthora colocasiae Raciborski isolates from South East Asia and Oceania. Plant Patho 52:303–313. https://doi.org/10.1046/j.1365-3059.2003.00851.x
Lebot V, Gunua T, Pardales JR, Prana MS, Thongjiem M, Viet NV, Yap TC (2004) Characterisation of taro (Colocasia esculenta (L.) Schott) genetic resources in South-east Asia and Oceania. Gen Res Crop Evol 51:381–392. https://doi.org/10.1023/B:GRES.0000023453.30948.4d
Lebot V, Malapa R, Bourrieau M (2011) Rapid estimation of taro quality by near infrared spectroscopy. J Food Agric Chem 59:9327–9334. https://doi.org/10.1021/jf202310w
Lebot V, Lawac F, Michalet S, Legendre L (2015) Characterization of taro [Colocasia esculenta (L.) Schott] germplasm for improved flavonoid composition and content. Plant Gen Res Char Util 12:120–128. https://doi.org/10.1017/S1479262115000581
Lebot V, Tuia V, Ivančič A, Jackson GVH, Saborio F, Reyes G, Rodriguez S, Robin G, Traoré R, Aboagye L, Onyeka J, van Rensburg W, Andrianavalona V, Mukherjee A, Prana MS, Ferraren D, Komolong B, Lawac F, Winter S, Pinheiro de Carvalho MAA, Iosefa T (2018) Adapting clonally propagated crops to climatic changes: a global approach for taro (Colocasia esculenta (L.) Schott). Gen Res Crop Evol 65:591–606. https://doi.org/10.1007/s10722-017-0557-6
Legesse T, Bekele T (2021) Evaluation of improved taro (Colocasia esculenta(L.) Schott) genotypes on growth and yield performance in North-Bench woreda of Bench-Sheko zone. South-Western Ethiopia. Heliyon 7:e08630. https://doi.org/10.1016/j.heliyon.2021.e08630
Liu H, You Y, Zheng X, Diao Y, Huang X, Hu Z (2015) Deep sequencing of the Colocasia esculenta transcriptome revealed candidate genes for major metabolic pathways of starch synthesis. South Afr J Bot 97:101–106. https://doi.org/10.1016/j.sajb.2014.11.008
Loy TH, Spriggs M, Wickler S (1992) Direct evidence for human use of plants 28,000 years ago: starch residues on stone artefacts from the Northern Solomon Islands. Antiquity 66:898–912. https://doi.org/10.1017/S0003598X00044811
Lu Z, Li W, Yang Y, Hu X (2011) Isolation and characterization of 19 new microsatellite loci in Colocasia esculenta (Araceae). Am J Bot 98:239–241. https://doi.org/10.3732/ajb.1100067
Mace ES, Godwin ID (2002) Development and characterization of polymorphic microsatellite markers in taro (Colocasia esculenta). Genome 45:823–832. https://doi.org/10.1139/G02-045
Macharia MW, Runo SM, Muchugi AN, Palapala V (2014) Genetic structure and diversity of East African taro [Colocasia esculenta (L.) Schott]. Afr J Biotech 13:2950–2955. https://doi.org/10.5897/AJB2013.13030
Manners R, van Etten J (2018) Are agricultural researchers working on the right crops to enable food and nutrition security under future climates? Global Env Change 53:182–194. https://doi.org/10.1016/j.gloenvcha.2018.09.010
Matthews PJ, Ghanem ME (2021) Perception gaps that may explain the status of taro (Colocasia esculenta) as an “orphan crop.” PPP 3:99–112. https://doi.org/10.1002/ppp3.10155
Matthews PJ, Van Dzu N, Tandang D, Agoo EM, Madulid DA (2015) Taxonomy and ethnobotany of Colocasia esculenta and C. formosana (Araceae): implications for the evolution, natural range, and domestication of taro. Aroideana 38:153–174
Matthews PJ, Nguyen VD, Fang Q, Long CL (2022) Colocasia spongifolia sp nov (Araceae) in southern China and central Vietnam. Phytotaxa 541:1–9. https://doi.org/10.11646/phytotaxa.541.1.1
Matthews PJ (2014) On the trail of Taro: an exploration of natural and cultural history. Senri Ethnological Series 88. National Museum of Ethnology, Osaka, Japan, pp. 429
McDavid CR, Alamu S (1976) Promotion of flowering in tannia (Xanthosoma sagittifolium) by gibberellic acid. Trop Agric (trinidad) 53:373–374
Mergeduš A, Kristl J, Ivančič A, Sober A, Sustar V, Krizan T, Lebot V (2015) Variation of mineral composition in different parts of taro (Colocasia esculenta) corms. Food Chem 170:37–46. https://doi.org/10.1016/j.foodchem.2014.08.025
Mikami T, Tsutsui S (2019) Taro [Colocasia esculenta (L.) Schott] production in Japan: present state, problems and prospects. Acta Agric Slov 114:183–189. https://doi.org/10.14720/aas.2019.114.2.4
Mishra AK, Sharma K, Misra RS (2008) Genetic relatedness of Colocasia esculenta as revealed by RAPDs. Asia Austral J Plant Sci Biotech 2:97–101
Mitharwal S, Kumar A, Chauhan K, Taneja NK (2022) Nutritional, phytochemical composition and potential health benefits of taro (Colocasia esculenta L.) leaves: a review. Food Chem 383:132406. https://doi.org/10.1016/j.foodchem.2022.132406
Miyasaka SC, McCulloch CE, Nelson SC (2012) Taro Germplasm evaluated for resistance to Taro Leaf Blight. HortBiotech 22:838–849. https://doi.org/10.21273/HORTTECH.22.6.838
Miyasaka SC, McCulloch CE, Fogg GE, Hollyer JR (2013) Optimum Plot Size for Field Trials of Taro (Colocasia esculenta). HortSci 48:435–443. https://doi.org/10.21273/HORTSCI.48.4.435
Miyasaka SC, Renee Bellinger M, Kantar MB, Helmkampf M, Wolfgruber T, Paudel R, Shintaku M (2019) Genetic Diversity in Taro (Colocasia esculenta). In: Nandwani Dilip (ed) Genetic Diversity in Horticultural Plants. Springer International Publishing, Cham, pp 191–215. https://doi.org/10.1007/978-3-319-96454-6_7
Mukhergee A, George J, Pillai R, Chakrabarti SWK, Naskar SK, Patro R, Nayak S, Lebot V (2016) Development of taro (Colocasia esculenta (L.) Schott) hybrids overcoming its asynchrony in flowering using cryostored pollen. Euphytica 212:29–36. https://doi.org/10.1007/s10681-016-1745-8
Mukherjee A, Debata BK, Naskar SK, Sahu S, Sahoo MR (2011) Biotic and abiotic stress tolerance in taro (Colocasia esculenta [L.] Schott) for adaptability to changing climate: a review. Plant Sci Res 33:1–10
Mukherjee D, Roquib A, Das ND, Mukherjee S (2016) A study on genetic variability, character association and path Co-efficient analysis on morphological and yield attributing characters of Taro [Colocasia esculenta (L.) Schott]. Am J Plant Sci 7:479–488. https://doi.org/10.4236/ajps.2016.73042
Muñoz-Cuervo I, Malapa R, Michalet S, Lebot V, Legendre L (2016) Secondary metabolite diversity in taro (Colocasia esculenta Schott) corms. J Food Comp Anal 52:24–32. https://doi.org/10.1016/j.jfca.2016.07.004
Mwenye O, Herselman L, Benesi I, Labuschagne M (2016) Genetic relationships in Malawian Cocoyam measured by morphological and DNA markers. Crop Sci 56:1–10. https://doi.org/10.2135/cropsci2015.10.0613
Nair UMA, Devi AA, Veena SS, Krishnan BSP, Arya RS (2018) Genetic diversity analysis of leaf blight resistant and susceptible Taro [Colocasia esculenta (L.) Schott] genotypes using ISSR markers. J Root Crops 44:44–52
Nath VS, Rajitha M, Darbeekaran SS, Hedge VM, Jeeva ML, Misra RS, Veena SS, John NS, Anjanadevi IP, Raj M (2015) Identification of Phytophthora colocasiae genes differentially expressed during infection on taro (Colocasia esculenta). Phys Mol Plant Patho 89:78–86. https://doi.org/10.1016/j.pmpp.2015.01.001
Nath VS, Basheer S, Jeeva ML, Hedge VM, Devi A, Misra RS, Veena SS, Raj M (2016) A rapid and efficient method for In Vitro Screening of Taro for leaf blight disease caused by Phytophthora colocasiae. J Phytopatho 164:520–527. https://doi.org/10.1111/jph.12477
Nath VS, Senthil M, Hegde VM, Jeeva ML, Misra RS, Veena SS, Raj M (2012) Genetic diversity of Phytophthora colocasiae isolates in India based on AFLP analysis. 3 Biotech 3:297–305. https://doi.org/10.1007/s13205-012-0101-5
Nauheimer L, Boyce PC, Renner SS (2012) Giant taro and its relatives: A phylogeny of the large genus Alocasia (Araceae) sheds light on Miocene floristic exchange in the Malesian region. Mol Phylogen Evol 63:43–51. https://doi.org/10.1016/j.ympev.2011.12.011
Ngetich A, Runo S, Ombori O, Ngugi M, Kawaka F, Perpetua A, Nkanata G (2015) Low cost micropropagation of local varieties of taro (Colocasia esculenta spp.). Brit Biotech J 6:136–145. https://doi.org/10.9734/BBJ/2015/15614
Nguluta M, Adebola P, Pillay M (2016) Genetic diversity analysis in South African taro (Colocasia esculenta) accessions using molecular tools. Int J Gen Mol Biol 8:18–24. https://doi.org/10.5897/IJGMB2016.0124
Nguyen VX, Yoshino H, Tahara M (1999) Genetic analysis of 12 polymorphic loci in taro, Colocasia esculenta (L.) Schott. Breed Sci 49:179–185. https://doi.org/10.1270/jsbbs.49.179
Noruddin NFNA, Hasan NA, Bahari UH, Harun AR, Ahmad F, Salleh S, Norngaini NMB (2022) Identification of genetic diversity among Mutant Taro (Colocasia esculenta L. cv Wangi) using Agro-Morphological Trait and Simple Sequence Repeats (SSR) Molecular Markers. J Exp Biol Agric Sci 10:359–368. https://doi.org/10.18006/2022.10(2).359.368
Nunes RSC, Pinhati FR, Golinelli LP, Rebouças TNH, Paschoalin VMF, Silva JT (2012) Polymorphic microsatellites of analysis in cultivars of taro. Hort Brasileira 30:106–111
Ochiai T, Nguyen VX, Tahara M, Yoshino H (2001) Geographical differentiation of Asian taro, Colocasia esculenta (L.) Schott, detected by RAPD and isozyme analyses. Euphytica 122:219–234. https://doi.org/10.1023/A:1012967922502
Oduro E, Donkor F, Ackah E (2021) Causes and suggested remedies to taro endangerment in four regions of Ghana. Bull Nat Res Cent 45:129. https://doi.org/10.1186/s42269-021-00587-x
Okpul T (2005) Effect of variety × site on corm yield, leaf blight resistance and culinary quality of seven taro, Colocasia esculenta (L.) Schott, varieties in Papua New Guinea. MSc. thesis, UniTech, Lae, Papua New Guinea
Oladimeji JJ, Kumar PL, Abe A, Vetukuri RR, Bhattacharjee R (2022) Taro in West Africa: Status, Challenges, and Opportunities. Agronomy 12:2094. https://doi.org/10.3390/agronomy12092094
Otekunrin OA, Sawicka B, Adeyonu AG, Otekunrin OA, Rachón L (2021) Cocoyam [Colocasia esculenta (L.) Schott]: Exploring the Production, Health and Trade Potentials in Sub-Saharan Africa. Sustainability 13:4483. https://doi.org/10.3390/su13084483
Patel MZ, Saelea J, Jackson GVH (1983) Breeding strategies for controlling diseases of taro in Solomon Islands. In: Proceedings 6th ISTRC symposium, CIP, Lima, Peru
Paudel R, Bartlett B, Zamora CM, Keach JE, Gutierrez-Coarite R, Hawkins J, Ahmad A, Motomura-Wages S, Kirk ER, Kantar MB, Lamour KH, Bernabe C, Shintaku M, Miyasaka SC (2022) Breeding and selection of taro (Colocasia esculenta) for improved disease-resistance in Hawaiʻi. Plants People Planet 56:1–23. https://doi.org/10.1002/ppp3.10335
Paul KK, Bari MA, Debnath SC (2011) Genetic variability of Colocasia esculenta (L.) Schott. Bangladesh J Bot 40:185–188
Paul KK, Bari MA, Debnath SC (2015) Correlation and path coefficient analysis in Giant Taro (Alocasia macrorrhiza L.). Bangladesh J Sci Ind Res 50:117
Paull RE, Tang CS, Gross K, Uruu G (1999) The nature of taro acridity. Post Harv Technol 16:71–78. https://doi.org/10.1016/S0925-5214(98)00099-4
Pereira FHF, Puiatti M, Finger FL (2005) Ornamental potential of taro (Colocasia esculenta (L.) Schott) accessions. Acta Hort 683:307–312. https://doi.org/10.17660/ActaHortic.2005.683.37
Plucknett DL (1984) Edible aroids. In: Simmonds NW (ed) Evolution of Crop Plants. Longman, London and New York, pp 10–12
Power RC, Güldemann T, Crowther A, Boivin N (2019) Asian Crop Dispersal in Africa and late holocene human adaptation to tropical environments. J World Prehist 32:353–392. https://doi.org/10.1007/s10963-019-09136-x
Price TV, Poka K, Bogarei G, Chan A, Okpul T (2007) Effect of seed storage under ambient and cold temperatures on germination of taro seed (Colocasia esculenta). Seed Sci Techno 35:674–687. https://doi.org/10.15258/sst.2007.35.3.14
Quero-García J, Noyer JL, Perrier X, Marchand JL, Lebot V (2004) A germplasm stratification of taro (Colocasia esculenta) based on agro-morphological descriptors, validation by AFLP markers. Euphytica 137:387–395. https://doi.org/10.1023/B:EUPH.0000040521.00303.ac
Quero-García J, Ivančič A, Letourmy P, Feldmann Ph, Molisale T, Lebot V (2006a) Heritability of the main agronomic traits of taro (Colocasia esculenta (L.) Schott). Crop Sci 46:2368–2375. https://doi.org/10.2135/cropsci2005.11.0424
Quero-García J, Courtois B, Ivančič A, Letourmy P, Risterucci AM, Noyer JL, Feldmann Ph, Lebot V (2006b) First genetic maps and QTL studies of yield traits on taro (Colocasia esculenta (L.) Schott). Euphytica 151:187–199. https://doi.org/10.1007/s10681-006-9139-y
Quero-Garcia J, Letourmy P, Ivančič A, Feldman P, Courtois B, Noyer JL, Lebot V (2009) Hybrid performance in taro (Colocasia esculenta) in relation to genetic dissimilarity of parents. Theor Appl Gen 119:213–221. https://doi.org/10.1007/s00122-009-1030-5
Sahoo MR, Dasgupta M, Mukherjee A, Sahu AK, Kole PC (2005) In vitro screening and characterization of taro for Phytophthora leaf blight disease. J Mycopatho Res 43:87–90
Sahoo MR, Dasgupta M, Kole PC, Bhat JS, Mukherjee A (2007) Antioxidative enzymes and isozymes analysis of taro genotypes and their implications in Phytophthora blight disease resistance. Mycopathol 163:241–248. https://doi.org/10.1007/s11046-007-9000-4
Sahoo MR, Kole PC, Dasgupta M, Mukherjee A (2008) Changes in Phenolics, Polyphenol Oxidase and its Isoenzyme patterns in relation to resistance in Taro against Phytophthora colocasiae. J Phytopathol 157:145–153. https://doi.org/10.1111/j.1439-0434.2008.01458.x
Sant R, Taylor M, Tyagi A (2006) Cryopreservation of in vitro-grown shoot-tips of tropical taro (Colocasia esculenta var. esculenta) by vitrification. CryoLetters 27:133–142. https://doi.org/10.1007/BF0127549
Sant R, Panis B, Taylor M, Tyagi A (2008) Cryopreservation of shoot-tips by droplet vitrification applicable to all taro (Colocasia esculenta var. esculenta) accessions. Plant Cell Tis Org Cul 92:107–111. https://doi.org/10.1007/s11240-007-9302-8
Sardos J, Noyer J-L, Malapa R, Bouchet S, Lebot V (2011) Genetic diversity of taro (Colocasia esculenta (L.) Schott) in Vanuatu (Oceania): an appraisal of the distribution of allelic diversity (DAD) with SSR markers. Genetic Resources and Crop Evolution 59(5):805–820. https://doi.org/10.1007/s10722-011-9720-7
Seetohul S, Puchooa D, Ranghoo-Sanmukhiya VM (2008) Genetic Improvement of Taro (Colocasia esculenta var esculenta) through in-vitro mutagenesis. Univ of Mauritius Res J 13A:79–89
Sharma K, Mishra AK, Misra RS (2008) The genetic structure of taro: a comparison of RAPD and isozyme markers. Plant Biotechnol Rep 2:191–198. https://doi.org/10.1007/s11816-008-0061-8
Sharma K, Mishra AK, Misra RS (2009) Identification and characterization of differentially expressed genes in the resistance reaction in taro infected with Phytophthora colocasiae. Mol Biol Rep 36:1291–1297. https://doi.org/10.1007/s11033-008-9311-7
Shintaku MH, Kimball HL, Brown AD, Miyasaka SC, Sim SB, Geib SM (2016) Using genotyping by sequencing (GBS) to identify loci in Colocasiae esculenta linked to Phytophthora colocasiae resistance. Acta Horticulturae. https://doi.org/10.17660/ActaHortic.2016.1118.19
Shrestha SK, Miyasaka SC, Shintaku M, Kelly H, Lamour K (2017) Phytophthora colocasiae from Vietnam, China, Hawaii and Nepal: intra- and inter-genomic variations in ploidy and a long-lived, diploid Hawaiian lineage. Mycol Progress 16:893–904. https://doi.org/10.1007/s11557-017-1323-z
Singh D, Guaf J, Okpul T, Wiles G, Hunter D (2006) Taro (Colocasia esculenta) variety release recommendations for Papua New Guinea based on multi-location trials. NZ J Crop Hort Sci 34:163–171. https://doi.org/10.1080/01140671.2006.9514402
Singh D, Mace ES, Godwin ID, Mathur N, Okpul T, Taylor M, Hunter D, Kambuou R, Rao VT, Jackson GVH (2008) Assessment and rationalization of genetic diversity of Papua New Guinea taro (Colocasia esculenta) using SSR DNA fingerprinting. Gen Res Crop Evol 55:811–822. https://doi.org/10.1007/s10722-007-9286-6
Singh S, Singh DR, Faseela F, Kumar N, Damodaran V, Srivastava RC (2011) Diversity of 21 taro (Colocasia esculenta (L.) Schott) accessions of Andaman Islands. Gen Res Crop Evol 59:821–829. https://doi.org/10.1007/s10722-011-9721-6
Sivan P, Liyanage A de S. 1993. Breeding and evaluation of taro (Colocasia esculenta) for the South Pacific region. In: Ferentinos L (Eds.). Proceedings of the sustainable taro culture for the pacific conference. Univ. of Hawaii. p. 1–5.
Soulard L, Letourmy P, Cao TV, Lawac F, Chaïr H, Lebot V (2016) Evaluation of vegetative growth, yield and quality related traits in taro (Colocasia esculenta [L.] Schott). Crop Sci 56:976–989. https://doi.org/10.2135/cropsci2015.05.0306
Soulard L, Mournet P, Guitton B, Chaïr H (2017) Construction of two genetic linkage maps of taro using single nucleotide polymorphism and microsatellite markers. Mol Breed 37:37. https://doi.org/10.1007/s11032-017-0646-4
Sreekumari MT, Abraham K, Edison S, Unnikrishnan M (2004) Taro breeding in India. In: Guarino L, Taylor M, Osborn T (Eds.) Proceedings of the 3rd Taro Symposium, Nadi, Fiji. SPC: 202–207.
Strauss MS, Stephens GC, Gonzales CJ, Arditti C (1980) Genetic variability in taro (Colocasia esculenta (L.) Schott, Araceae). Ann Bot 45:429–437
Sultana F, Hu YG, Toda MJ, Taneka K, Yafuso M (2006) Phylogeny and classification of Colocasiomyia (Diptera, Drosophilidae), and its evolution of pollination mutualism with aroid plants. Syst Entomol 31:674–702. https://doi.org/10.1111/j.1365-3113.2006.00344.x
Tanimoto T, Matsumoto T (1986) Variations of morphological characters and isozyme patterns in Japanese cultivars of Colocasia esculenta Schott and C. gigantea Hook. Jap J Breed 36:100–111. https://doi.org/10.1270/jsbbs1951.36.100
Trujillo EE, Menezes TD, Cavaletto CG, Shimabuku R, Fukuda SK (2002) Promising new taro cultivars with resistance to taro leaf blight: ‘Pa‘lehua’, ‘Pa‘akala’, and ‘Pauakea’. New Plants for Hawaii 007. pp. 4. http://www.ctahr.hawaii.edu/oc/freepubs/pdf/NPH-7.pdf
Tyson JL, Fullerton RA (2007) Mating type of Phytophthora colocasiae from the Pacific region, India and South-east Asia. Austr Plant Disease Notes 2:111–112. https://doi.org/10.1071/DN07046
VandenBroucke H, Mournet P, Vignes H, Chair H, Malapa R, Duval MF, Lebot V (2015) Somaclonal variants of taro (Colocasia esculenta Schott) and yam (Dioscorea alata L.) are incorporated into farmers’ varietal portfolios in Vanuatu. Gen Res Crop Evol 63:495–511. https://doi.org/10.1007/s10722-015-0267-x
Wang A, Minghua Y, Senrong H (2015) Cryopreservation of in vitro-grown shoot tips of red bud taro by encapsulation-vitrification. Plant Div Res 37:801–812. https://doi.org/10.1007/BF01275498
Wang Z, Sun Y, Huang X, Li F, Liu Y, Zhu H, Liu Z, Ke W (2020) Genetic diversity and population structure of eddoe taro in China using genome-wide SNP markers. PeerJ 8:e10485. https://doi.org/10.7717/peerj.10485
Wilson JE (1981) Effects of formulation and method of applying gibberellic acid on flower promotion in cocoyam. Exp Agric 17:317–322
Wilson JE (1989) Taro Breeding. IRETA Agro-Facts Publication No. 3/89, Western Samoa. pp. 51. https://www.ctahr.hawaii.edu/adap/Publications/Ireta_pubs/taro_breeding.pdf
Xiuzhen C, Chunlin L, Keming L (2005) Floral organogenesis of Colocasia bicolor (Araceae). Acta Bot Yunnan 27:193–203
Xiuzhen C, Chunlin L, Keming L (2006) Colocasia yunnanensis (Araceae), a new species from Yunnan, China. Ann Bot Fennici 43:139–142
Yalu A, Singh D, Yadav AA (2009) Taro Breeding in PNG: a success story. APAARI: Asia-Pacific association of agricultural research institutions. FAO, Bangkok, Thailand. pp. 39
You Y, Liu D, Liu H, Zheng X, Diao Y, Huang X, Hu Z (2015) Development and characterisation of EST-SSR markers by transcriptome sequencing in taro (Colocasia esculenta (L.) Schott). Mol Breed 35:134. https://doi.org/10.1007/s11032-015-0307-4
Acknowledgements
Over the years, national agricultural research institutions have contributed to taro breeding despite their very limited means, their contribution was of utmost importance as nothing could have been achieved without their efforts. Several international funding agencies (USAID, AUSAID, FAO, UNDP, and the EU, among others) have also contributed to taro research and their financial contribution are gratefully acknowledged.
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Vincent Lebot proposed the idea of this review article, performed the literature search and data analysis and drafted the first version. Anton Ivančič critically read and improved the first draft of the review. Both authors read and approved the final version of the manuscript.
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Lebot, V., Ivančič, A. Taro (Colocasia esculenta (L.) Schott), breeding history, objectives, methods and strategies: a review of fifty years of sporadic efforts. Euphytica 218, 166 (2022). https://doi.org/10.1007/s10681-022-03118-5
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DOI: https://doi.org/10.1007/s10681-022-03118-5