Biofortification of taro (Colocasia esculenta) through breeding for increased contents in carotenoids and anthocyanins
- 345 Downloads
Biofortification of taro (Colocasia esculenta) has never been studied. The aim of the present study is to compare the chemical compositions and individual constituent contents for major compounds (starch, sugars, cellulose, proteins, minerals), carotenoids and anthocyanins between parents and hybrids selected first for their agronomic performance and second for their corm characteristics (flesh color, quality and taste). For major compounds, 45 selected hybrids were compared to 66 cultivars and for carotenoids and anthocyanins, 34 selected hybrids were compared to 79 cultivars. Total sugars, cellulose and mineral contents presented moderate increases in hybrids. Carotenoids and anthocyanins contents were not correlated with corm flesh colors, most likely in relation with the wide range of the observed variability. Anthocyanin contents could not be increased in the selected hybrids, while total carotenoid contents were increased by more than fourfolds. The results of this study indicate that carotenoid contents can be rapidly improved by selecting plants of good agronomic performance and corm shape with increased density of yellow and orange colors. Potential applications to taro breeding programs are discussed.
KeywordsAnthocyanins Biofortification Carotenoids Primary compounds Taro
Coefficient of variation expressed in percentage
Solid phase extraction
This research was partly supported by the French ANR SYSTERRA program under the project “Vegeculture” (no ANR-10-STRA-007).
- Bourrieau M (2000) Valorisation des racines et tubercules tropicaux pour l’alimentation humaine en Océanie: le cas du lap–lap au Vanuatu. Master of Sciences Thesis, ENSIA-SIARC, Montpellier, p 122 (in French)Google Scholar
- Bradshaw J E (2010) In: Bradshaw J E (ed) Root and Tuber Crops. Handbook of Plant Breeding. Springer, New York, p 295Google Scholar
- Englberger L, Schierle J, Kraemer K, Aalbersberg W, Dolodolotawake U, Humphries J, Graham R, Reid AP, Lorens A, Albert K, Levendusky A, Johnson E, Paul Y, Sengebau F (2008) Carotenoid and mineral content of Micronesian giant swamp taro (Cyrtosperma) cultivars. J Food Comp Anal 21:93–106CrossRefGoogle Scholar
- Lev-Yadun S, Gould KS (2009) Role of anthocyanins in plant defense. In: Lev-Yadun S, Gould KS (eds) Anthocyanins: biosynthesis, functions, and applications. Springer, New York, pp 1–28Google Scholar
- Mares JA, LaRowe TL, Snodderly DM, Moeller SM, Gruber MJ, Klein ML, Wooten BR, Johnson EJ, Chappell RJ (2006) Predictors of optical density of lutein and zeaxanthin in retinas of older women in the carotenoids in age-related eye disease study, an ancillary study of the women’s health initiative. Am J Clin Nutr 84:1107–1122PubMedGoogle Scholar
- Rodriguez-Amaya DB, Kimura M (2000) In Harvestplus handbook for carotenoid analysis. Harvestplus technical monograph 2, International Food Policy Research Institute (IFPRI), Washington, DC, and International Centre for tropical Agriculture (CIAT). Cali, Colombia, p 58Google Scholar
- The R Project for Statistical Computing. http://www.r-project.org/ Accessed 17 April 2009