Inheritance of earliness, height, and leaf number in crosses of early maturing rapeseed

E. A. Ringdahl, P. McVetty, J. L. Sernyk
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引用次数: 6

Abstract

A dwarf early Brassica napus line (D-001), derived from crosses with Diplotaxis muralis, was crossed to two B. napus cultivars, 'Regent' and 'Pivot' to study the inheritance of earliness (days to bud, days to first flower, and days to maturity), height, and leaf number. Spaced plants of P1, P2, F1, F2, BC1, and BC2 generations for both crosses were grown in a completely randomized design at two locations in Manitoba in 1984. Results of means analyses indicated that additive gene action predominated for all traits for both crosses and both locations. In addition, dominance gene action was found to influence days to first flower, days to maturity, and leaf number for the D-001 × 'Regent' cross and all traits for the D-001 × 'Pivot' cross. Nonallelic interactions were nonsignificant in all cases. Genotype × environment interactions were not significant for all traits except height. Variance analyses indicated a predominance of additive gene action. Broad sense heritabilities for phenological traits ranged fr...
早熟油菜籽早熟性、高、叶数的遗传
将一个矮化的早期甘蓝型油菜品系(D-001)与两个甘蓝型油菜品种“Regent”和“Pivot”杂交,研究其早熟性(发芽天数、开花天数和成熟天数)、高度和叶数的遗传。1984年在马尼托巴省的两个地点采用完全随机设计种植两个杂交组合P1、P2、F1、F2、BC1和BC2代的间隔植株。均数分析结果表明,加性基因作用在两个杂交和两个位置的所有性状中均占主导地位。此外,显性基因的作用影响了D-001 בRegent’杂交品种和D-001 בPivot’杂交品种的开花天数、成熟天数和叶片数。非等位基因相互作用在所有病例中均不显著。除身高外,其余性状的基因型与环境互作均不显著。方差分析表明,加性基因作用占优势。物候性状的广义遗传力为…
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