Leaf rust and stripe rust resistance genes Lr54 and Yr37 transferred to wheat from Aegilops kotschyi

被引：66
|
作者：
Marais, GF
McCallum, B
Snyman, JE
Pretorius, ZA
Marais, AS
机构：
[1] Univ Stellenbosch, Dept Genet, ZA-7602 Matieland, South Africa
[2] Agr & Agri Food Canada, Cereal Res Ctr, Winnipeg, MB R3T 2M9, Canada
[3] Univ Orange Free State, Dept Plant Sci, ZA-9300 Bloemfontein, South Africa
来源：
PLANT BREEDING | 2005年 / 124卷 / 06期
关键词：
Triticum aestivum; Aegilops kotschyi; Puccinia striiformis f.sp.tritici; Puccinia triticina; translocation; wide hybridization;
D O I：
10.1111/j.1439-0523.2005.01116.x
中图分类号：
S3 [农学（农艺学）];
学科分类号：
0901 ;
摘要：
The tendency of unpaired meiotic chromosomes to undergo centric misdivision was exploited to translocate leaf rust and stripe rust resistance genes from an Aegilops kotschyi addition chromosome to a group 2 chromosome of wheat. Monosomic and telosomic analyses showed that the translocation occurred to wheat chromosome arm 2DL. The introgressed region did not pair with the corresponding wheat 2DL telosome during meiosis suggesting that a whole arm may have been transferred. Female transmission of the resistance was about 55% whereas male transmission was strongly preferential (96%). The symbols Lr54 and Yr37 are proposed to designate the new resistance genes.
引用
收藏
页码：538 / 541
页数：4
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