Development, initial evaluation and association of storage root yield and anthocyanin in sweet potato genotypes
2021
Borines, N.O.M. | Lalusin, A.G.
Purple sweet potato cultivars contain anthocyanin pigments, a compound which has several anti- ageing effects. Despite its usefulness, breeding of purple sweet potato lags in quantity compared to non-purple-fleshed cultivars. One assumption is that anthocyanin pigment is an obstacle to starch production in storage roots, affecting its yield. Yet, it is desirable to develop a high-yielding (elite) genotype with high storage root anthocyanin concentration. Five sweet potato genotypes: three non-elite purple, one elite non-purple, and one primitive purple accession were intercrossed in a reciprocal manner. A total of 73 new genotypes were generated. The progenies were initially evaluated for storage root yield and anthocyanin content. Preliminary yield trial (WS) revealed 17 progenies with higher/comparable yield to the highest yielding parent. Five progenies have higher/comparable total monomeric anthocyanin (TMA) than the high-performing purple parent. Among the progenies evaluated, only G23, a cross between P1 (Mariñas) and P3 (SG-10-85-02) satisfied the two criteria and was identified as the best genotype. Correlation analyses suggest a weak linear relationship between storage root anthocyanin content and yield. However, regression analysis revealed a negative association between two traits.
显示更多 [+] 显示较少 [-]