PengJ.H.,FahimaT.,RoderM.S.,LiY.C.,DahanA.,GramaA.,NevoE.

• 1:以色列海法芒特卡梅尔海法大学生物进化研究所!31905
• 2:以色列海法芒特卡梅尔海法大学生物进化研究所!31905
• 3:德国格特斯本科伦兹特西植物遗传与作物研究所!3
• 4:D-06466

摘要(Abstract)：

主要对以色列野生二粒小麦赫尔蒙种群中分离获得的一个抗条锈病基因进行了分子定位研究 ,将源于赫尔蒙山具抗杀锈病的种系 T.dicoccides H52与普通的栽培种 Langdon进行杂交并创建了 F2 代遗传图。研究发现 H52种系抗条锈病的能力由一种显性基因控制 ,将其暂定名为 Yr H52。从 1 2 0个微卫星标记中 ,已经检测到来自亲本 91 %的多态性 ,而且从其中 56个微卫星分子标记中产生了 79个分离的位点 ,有 9个位点显示出了与 Yr H 52基因连锁 ,其重组率 0 .0 2～ 0 .3 5,遗传距离 2 .0 0～ 4 3 .3 7cm之间 ,L OD值 3 .56～ 54.2 2。由 1 0个微卫星位点和 Yr H52构建的染色体 1 B遗传图 ,其图距全长为 1 0 1 .5cm。Yr H52基因位于 Xgwm2 64 a和 Xgwm2 64 c之间 ,且与 Xgwm2 64 a、Xgwm1 8紧密连锁 ,两侧依次分别与 Xgwm1 3 1 a、Xgwm63 6b、Xgwm2 64 c、Xgwm4 0 3 a、Xgwm1 53、Xgwm550 a和 Xgwm1 2 4连锁。同时 ,Yr H52也与 REL P标记物 N or1紧密连锁 ,图距 1 .4 cm,L OD2 9.62。这显然与野生二粒小麦另一个抗条锈病基因 Yr1 5不同 ,研究证明 Yr1 5与 N or1图距是 1 1 .0 cm。

关键词(KeyWords)： 小麦;野生二粒种群;抗条锈病基因;分子定位

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): PengJ.H.,FahimaT.,RoderM.S.,LiY.C.,DahanA.,GramaA.,NevoE.

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