小麦矮秆种质系山农31504-1矮秆基因的鉴定及其染色体定位  

Identification and Chromosome Location of Dwarf Gene in Short Stalked Germplasm Line Shannong31504-1

作　　者：于东海[1] 李静[1] 王洪刚[1] 李兴峰[1] 陆文辉[1] 

机构地区：[1]山东农业大学农学院/国家小麦改良中心山东分中心,泰安271018

出　　处：《中国农业科学》2004年第12期1942-1945,共4页Scientia Agricultura Sinica

基　　金：国家自然科学基金资助项目(30270826)

摘　　要：以小麦矮秆种质系山农31504-1作母本与小麦高秆品种杂交,获得F1杂种和F2分离群体。初步遗传分析表明,山农31504-1的矮秆性状由部分显性单基因控制;苗期外施赤霉酸表明,山农31504-1对赤霉酸不敏感。同时利用中国春缺体-四体系和中国春端体系对山农31504-1矮秆基因进行了染色体定位,结果证明矮秆基因位于山农31504-1的2A染色体上。Crosses between dwarf germplasm line Shannong31504-1, high material Shannong298 and Chinese Spring were made respectively. Through genetic analysis, it can be proved that the dwarf trait of Shannong31504-1 was controlled by one partial dominant gene. The GA-insensitivity of Shannong31504-1was detected by treating seedlings with low concentrations of exogenous GA. In order to locate the dwarf gene in Shannong31504-1, Chinese Spring nullitetrasomic lines and ditelosomic lines were crossed with Shannong31504-1. The result indicated that the dwarf gene was located on the chromosome 2A of Shannong31504-1.

关 键 词：矮秆基因 矮秆种质 小麦 染色体定位 赤霉酸 矮秆性状 F1杂种 鉴定 敏感 显性 

分 类 号：S512.1[农业科学—作物学]