Chromosomal location of yellow rust resistance gene(s) in Triticum aestivum-Lophopyrum elongatum substitution lines  

作　　者：Jianxin Ma Ronghua Zhou Yuchen Dong Jizeng Jia 

机构地区：[1]Chinese Acad Agr Sci, Inst Crop Germplasm Resources, Beijing 100081, Peoples R China

出　　处：《Chinese Science Bulletin》1999年第4期344-348,共5页

摘　　要：A set of T. aestivum-L. elongatum substitution lines were studied on yellow rust resistance at seedling stage, inheritance of the resistance and esterase-5 (Est-5) analysis. The results demonstrated that L. elongatum carried a new yellow rust resistance gene(s), which was dominant and located on chromosome 3E of L. elongatum. The biochemical locus encoding Est-5 was also located on chromosome 3E, and was tentatively named Est-E5, which was co-segregant with the Yr gene(s) in wheat background. In addition, the transmission frequencies of chromosome 3E in 3A/3E and 3D/3E hybrids selfing were significantly higher than that of chromosome 3E in 3B/3E hybrid, which was probably due to the difference on genetic relationships among A, B, D and E genomes.A set ofT. aestivum-L. elongatum substitution lines were studied on yellow rust resistance at seedling stage, inheritance of the resistance and esterase-5 (Est-5) analysis. The results demonstrated thatL. elongatum carried a new yellow rust resistance gene(s), which was dominant and located on chromosome 3E ofL. elongatum. The biochemical locus encoding Est-5 was also located on chromosome 3E, and was tentatively named Est-E5, which was co-segregant with theYr gene(s) in wheat background. In addition, the transmission frequencies of chromosome 3E in 3A/3E and 3D/3E hybrids selfing were significantly higher than that of chromosome 3E in 3B/3E hybrid, which was probably due to the difference on genetic relationships among A, B, D and E genomes.

关 键 词：TRITICUM aestivum-Lophopyrum elongatum substitution lines yellow RUST resistance gene location BIOCHEMICAL marker. 

分 类 号：S435.12[农业科学—农业昆虫与害虫防治]