Genotype x environment interaction on tocochromanol and plastochromanol-8 content in seeds of doubled haploids obtained from F1 hybrid black x yellow seeds of winter oilseed rape (Brassica napus L.)

BACKGROUNDThe aim of the study was to determine the effect of genotype x environment interaction on the levels of -, -, - and -tocopherol (-T, -T, -T and -T, respectively) and plastochromanol-8 (PC-8) in seeds of 17 doubled haploids (DHs) obtained from the F1 hybrid derived from crossing black (DH H-2-26)xyellow (DH Z-114) seeds of winter oilseed rape. RESULTSThe content of tocopherols in the tested DH lines ranged from 415.6 to 540.1mg kg(-1) seeds, while PC-8 content ranged from 56.3 to 89.0mg kg(-1) seeds. The -T/-T ratio reached a level of 0.78-1.29. Studies have shown that heritability for -T, -T, -T, total-T and PC-8 is mainly due to genotypic variation. For the -T homologue the level was dependent on environmental effect. CONCLUSIONThe obtained DH lines population of oilseed rape is characterized by high heritability coefficients for -T, -T, -T, total-T and PC-8 levels, which indicates a greater influence of genotype than the environment on the content of these compounds. Among all studied doubled haploids, seven DHs were selected which were characterized by stable contents of -T, -T, -T, -T and total-T with the simultaneous stable content of PC-8. (c) 2017 Society of Chemical Industry