Genetic variability-, genotype × environment interactions- and combining ability-analyses of kernel tocopherols among maize genotypes possessing novel allele of γ-tocopherol methyl transferase (ZmVTE4)

摘要: Abstract Deficiency of vitamin-E or tocopherol causes neurological disorders in humans. α-tocopherol possessing the highest activity is present low concentration maize kernel. Nine lines and four testers favourable allele ZmVTE4 that significantly enhances were used to generate 36 hybrid combinations. Significant variation was observed for α- (5.95–39.03 μg/g), γ- (11.69–50.82 μg/g), δ- (4.09–10.76 μg/g) total-tocopherol (33.18–90.53 μg/g). α-, δ-tocopherol constituted 36%, 53% 11% total tocopherol, respectively. Majority experimental hybrids possessed higher (mean: 21.37 μg/g) than check 11.16 μg/g). AMMI analysis revealed across tocopherols, genotype interaction effect accounted 35–77% 23–45% variation, The environmental effects minor magnitude. Non-additive gene action predominant γ-, total-tocopherol, while conditioned predominantly by additive action. information generated here assumes great significance biofortification programme. This first report variability, G × E interactions combining ability kernel using novel ZmVTE4.