摘要
应用胚乳性状的遗传模型,以6×6双列设计研究了小麦蛋白质含量及沉淀值的遗传。结果表明:小麦F_2代籽粒的蛋白质含量的遗传符合加性-显性模型;沉淀值的遗传符合加性-显性-上位性模型。控制蛋白质含量和沉淀值的基因作用方式为超显性,显性作用大于加性作用。F_2群体中显性等位基因的频率与隐性等位基因的频率不等。本文还比较了二倍体模型与三倍体模型的异同,讨论了小麦蛋白质含量及沉淀值的改良与选择问题。
Using the triploid model, the genetic behavior of protein content and sedimentation value in wheat grains were studied with a set of 6× 6 diallel crosses. The results indicated that the inheritance of protein content in F2 grains was fitted to additive-dominant model and that of sedimentation value was fitted to additive-dominant-epistasis model. The expression of genes controlling protein content and sedimentation value were overdominance and the effects of dominance were much greater than the additive one. In present paper, the differences between triploid and diploid genetic model were compared and the improvement and selection for protein content and sedimentation value in wheat breeding were discussed.
出处
《作物学报》
CAS
CSCD
北大核心
1995年第3期330-333,共4页
Acta Agronomica Sinica
关键词
冬小麦
胚乳性状
遗传模型
育种改良
Winter wheat
Endosperm trait
Triploid model
Breeding improvement
