高秆突变体Mh—1的株高遗传研究  

Genetic Study of Plant Height of Tall Plant Mutant Mh-1 in Rice (Oryza sativa L.)

作　　者：朱旭东[1] 张晓惠[1] 钱前[1] 严学强[1] 闵绍楷[1] 熊振民[1] 

机构地区：[1]中国水稻研究所水稻生物学部重点实验室,杭州310006

出　　处：《Acta Genetica Sinica》2000年第4期311-316,共6页

基　　金：浙江省自然科学基金;国际原子能机构(IAEA)

摘　　要：Ｍｈ－１是从矮秆品种桂朝２号辐射诱变后代中产生的高秆突变体。用Ｍｈ－１与ｓｄ－１矮秆、非ｓｄ－１矮秆和普通高秆材料杂交，通过对Ｆ１、Ｆ２、Ｆ３等世代以及测交后代的株高进行遗传分析，结果表明Ｍｈ－１的高秆特性是由１对隐性抑制基因控制的。该抑制基因能调节ｓｄ－１基因的表达，而对由非ｓｄ－１基因控制的矮秆没有抑制作用，这一隐性抑制基因暂时被定名为ｉ－ｓｄ－１（ｔ）。还讨论了该基因的遗传学意义和可能的育种利用价值。Mh-1 is a tall plant mutant induced by irradiation from semi-dwarfed variety Guichao 2. The genetic analyses were carried out through the F1, F2, F3 progenies and test-crossed F1 on Mh-1 crossed with materials with sd-1 gene, non-allelic gene to sd-1 and common tall plant. The results indicate that the induced tall plant trait of Mh-1 is controlled by a recessive inhibiting gene, named tentatuvely i-sd-1(t), that can regulate the expression of sd-1 gene but not of non-allelic gene to sd-1. The valuation of i-sd-1(t) in hybrid rice breeding was discussed.

关 键 词：水稻 高秆突变 抑制基因 株高遗传 隐性基因 

分 类 号：Q943[生物学—植物学]