Lu Weiguo,Gai Juny i.ADVANCES IN RESISTANCE TOSOYBEAN CYST NEMATODE (Heterodera glycines Ichinohe)AND RESISTANT MOLECULAR MARKERS IN SOYBEAN(Glycines max Merr.)[J].Soybean Science,2004,23(01):59-65.[doi:10.11861/j.issn.1000-9841.2004.01.0059]
大豆对胞囊线虫抗性遗传与分子标记研究进展
- Title:
- ADVANCES IN RESISTANCE TOSOYBEAN CYST NEMATODE (Heterodera glycines Ichinohe)AND RESISTANT MOLECULAR MARKERS IN SOYBEAN(Glycines max Merr.)
- 文章编号:
- 1000 -9841(2004)01 -0059 -07
- Keywords:
- Glycines max ; Heterodera glycines Ichinohe ; Race identification ; Genetics of resistance ; Molecularmarker
- 分类号:
- S 565.1
- 文献标志码:
- A
- 摘要:
- 大豆胞囊线虫是一种世界性的病害。已经证明大豆对胞囊线虫的抗性受多个基因控制。但由于抗性鉴定工作量大、易受环境因素影响以及大豆胞囊线虫群体本身的异质性, 各个研究者的结果差异很大, 具有抗源和组合特异性。Rigg s 等建立的生理小种鉴定模式虽被广泛采用, 但鉴别寄主中抗性基因的重叠引起研究者的争议。分子标记结合经典遗传试验定位了2 个抗性基因位点rhg1 和Rhg4 , rhg1 在抗性遗传中贡献较大且具有非小种专化抗性, 对抗病育种和基因克隆有重要意义, 在G 连锁群上许多与rhg1 紧密连锁的分子标记已经找到, 并证明在抗性鉴定中有很大的利用价值。Rhg4 位于A 连锁群上, 距离i 位点0 .35 cM , 与1 、3 号小种抗性有关。
- Abstract:
- Soybean cy st nematode (SCN , Heterodera glycines Ichinohe)is a w orldw ide pest of soybeans .It wasreported that the inheritance of resistance to this pest w as cont rolled by multiple genes and that there w ere differentresult s among dif ferent experiment s due to environment difference and population heterogenei ty of thepest .The race identification system developed by Riggs et al.(1988)was still cont roversial due to the overlap ofresistant genes in the four differentials .Tw o resistant genes , rhg1 and Rhg 4 , w ere identified and taggedthroug h Mendel genetic study and molecular marker analysis.The gene , rhg 1 , located on linkage g roup G ,could explain mo re than 50 % of the total variation in the resistance to the pest and confer non -race specific resistance, and it was of g reat value in breeding and resistant gene clo ning .Several molecular markers close torhg1 had been screened out and proved to be effective in breeding programs .The gene , Rhg 4 , located 0 .35 cMfrom i locus on linkage g roup A , w as related to Race 3 resistance .
参考文献/References:
1 刘维志主编.植物病原线虫学[ M] .北京:中国农业出版社,2000 .
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备注/Memo
基金项目:“ 九五” 国家科技攻关项目和河南省自然科学基金项目(0211030800)