水稻胚乳淀粉低直链淀粉含量形成的基因座位

Chromosomal location of genes conditioning low amylose content of endosperm starches in rice, Oryza sativa L.

机构信息

Plant Breeding Laboratory, Faculty of Agriculture, Kyushu University, Hakozaki, 812, Fukuoka, Japan.

出版信息

Theor Appl Genet. 1988 Aug;76(2):183-9. doi: 10.1007/BF00257844.

Abstract

Eight dull mutants that lower the amylose content of rice endosperm as well as waxy mutant and a cultivar with common grains were crossed in a diallele manner. The amylose content of F1 and F2 seeds was determined on the basis of single grain analysis. It was concluded that the low amylose content of dull mutants is under monogenic recessive control. Alleles for low amylose content are located at five loci designated as du-1, du-2, du-3, du-4 and du-5. These loci are independent of wx locus located on chromosome 6. The five du loci have an additive effect in lowering the amylose content. Two loci, du-1 and du-4, were found to be located on chromosomes 7 and 4, respectively.

摘要

将 8 个使稻米胚乳直链淀粉含量降低的钝性突变体和一个蜡质突变体以及一个普通粒型品种进行双列杂交。根据单粒分析测定 F1 和 F2 种子的直链淀粉含量。结果表明，钝性突变体的低直链淀粉含量受单基因隐性控制。低直链淀粉含量的等位基因位于 5 个位点上，分别命名为 du-1、du-2、du-3、du-4 和 du-5。这些位点与位于 6 号染色体上的 wx 位点无关。这 5 个 du 位点在降低直链淀粉含量方面具有累加效应。发现 2 个位点 du-1 和 du-4 分别位于第 7 号和第 4 号染色体上。