中国大麦育种主要矮源的遗传等位测验  

Allelism Tests for the Dwarf Genes in the Three Main Dwarf Sources of Barley

作　　者：张京[1] 

机构地区：[1]中国农业科学院作物品种资源研究所,北京100081

出　　处：《作物学报》1998年第1期42-46,共5页Acta Agronomica Sinica

摘　　要：矮和半矮秆杂交育成品种的系谱分析业已表明,尺八大麦、萧山立夏黄和沧州裸大麦是我国大麦育种的3个主要矮源.本研究根据普通遗传学原理,设计采用类似回交的测验方法,对它们进行了遗传等位测验.结果表明,这3个大麦主要育种矮源所携带的矮秆基因完全等位,与已知矮秆基因uz同属1个基因位点,位于大麦的第三染色体的短臂之上.与其它已知矮秆基因ert、br和sdw之间不等位,但存在积加效应.暴露了我国大麦育种矮源单一化的问题.Pedigree analysis of Chinese modern bred barley varieties showed that Chi Ba Da Mai, Xiao Shan Li Xia Huang and Gang Zhou Luo Da Mai were the three main dwarf gene donors of barley breeding in China. Gene allelism relationship was studied among them and the carrier varieties of the known dwarf genes uz, br and sdw. The results revealed that the dwarf genes in Chi Ba Da Mai, Xiao Shan Li Xia Huang and Gang Zhou Luo Da Mai were allelic to the gene uz carried by Si Guo Luo 87 a Japanese variety, located on the short arm of chromosome 3. There was no allelic relationship between the dwarf genes in the three Chinese barley varieties and the known dwarf genes br and sdw respectively in Himalaya and Indian Dwarf. But additive Genetic effect was found between them. A problem on the narrow diversity of dwarf genes in barley breeding in China was discussed.

关 键 词：大麦 矮源 矮秆基因 等位测验 育种 

分 类 号：S512.303.2[农业科学—作物学]