水稻新半矮秆基因品系RA73与4个sd-1半矮秆基因恢复系的株高遗传  

Heredity of Rice Plant Height of RA73 with sd-r Gene and Four Restore Lines with sd-1 Gene

作　　者：严宗卜 阮仁超 陈惠查 游俊梅 

机构地区：[1]贵州省水稻研究所,贵阳550006

出　　处：《贵州农业科学》2006年第5期5-8,共4页Guizhou Agricultural Sciences

基　　金：贵州省科学技术基金项目(黔科合计2004-3069)

摘　　要：用具有sd—r新半矮秆基因的品系RA73与具有sd-1半矮秆基因的4个恢复系（明恢63、明恢86、蜀恢527和成恢047）杂交，对亲本、F1和F2的株高进行了遗传分析。结果表明，亲本的株高为82．4～94．5cm；F1的株高为126．6～133．1cm；F2代植株高度产生分离，高株（101～140cm）：半矮秆（71～100cm）：矮秆（45～70cm）值经x^2分析，符合9：6：1的比例，为2对不等位的半矮秆基因独立分配遗传。探讨了sd—r半矮秆基因在杂交水稻上应用的可能性和方法。The plant height of P, F1 and F2 of four crosses made from rice RA73 with the sd-r semi-dwarf gene ×four rice restorer lines with sd-1 semi-dwarf gene （Minghei 63, Minghei 86, Shuhui 527 and Chenghui 047） were genetically analyzed. The plant height of P and F1 are 82.4～94.5 cm and 126.6～133.1 cm and the segregation ratio of F2 plant height （high height plant with 101～ 140 cm, semi-dwarf plant with 71～100 cm and dwarf plant with 45～70 cm） accords with the proportion of 9 ： 6 ： 1 by the chi-square method, which expresses that sd-r and sd-1 genes are two pairs of non-allelic independent semi-dwarf genes. The paper discusses the application and way of RA73 with the sd-r semi-dwarf gene in breeding of hybrid rice at the same time.

关 键 词：水稻 半矮秆基因 RA73 株高 遗传 

分 类 号：S511.032[农业科学—作物学]