| 大豆对胞囊线虫抗性遗传与分子标记研究进展 |
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| 引用本文： | 卢为国,盖钧镒.大豆对胞囊线虫抗性遗传与分子标记研究进展[J].大豆科学,2004,23(1):59-65. |
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| 作者姓名： | 卢为国 盖钧镒 |
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| 作者单位： | 1. 南京农业大学大豆研究所,农业部国家大豆改良中心,作物遗传与种质创新国家重点实验室,南京 210095;河南省农科院棉花油料作物研究所 郑州 450002
2. 南京农业大学大豆研究所,农业部国家大豆改良中心,作物遗传与种质创新国家重点实验室,南京 210095 |
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| 基金项目： | 国家科技攻关项目，河南省自然科学基金 |
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| 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.Riggs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rbg1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.
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| 关 键 词： | 大豆 胞囊线虫 小种鉴定 抗性遗传 分子标记 |
| 文章编号： | 1000-9841(2004)01-0059-07 |
ADVANCES IN RESISTANCE TO SOYBEAN CYST NEMATODE (Heterodera glycines Ichinohe) AND RESISTANT MOLECULAR MARKERS IN SOYBEAN(Glycines max Merr.) |
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| Lu Weiguo , Gai Junyi.ADVANCES IN RESISTANCE TO SOYBEAN CYST NEMATODE (Heterodera glycines Ichinohe) AND RESISTANT MOLECULAR MARKERS IN SOYBEAN(Glycines max Merr.)[J].Soybean Science,2004,23(1):59-65. |
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| Authors: | Lu Weiguo Gai Junyi |
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| Institution: | Lu Weiguo 1,2 Gai Junyi 1 |
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| Abstract: | Soybean cyst nematode (SCN, Heterodera glycines Ichinohe) is a worldwide pest of soybeans. It was reported that the inheritance of resistance to this pest was controlled by multiple genes and that there were different results among different experiments due to environment difference and population heterogeneity of the pest. The race identification system developed by Riggs et al. (1988) was still controversial due to the overlap of resistant genes in the four differentials. Two resistant genes, rhg1 and Rhg4, were identified and tagged through Mendel genetic study and molecular marker analysis. The gene, rhg1, located on linkage group G, could explain more than 50% of the total variation in the resistance to the pest and confer non-race specific resistance, and it was of great value in breeding and resistant gene cloning. Several molecular markers close to rhg1 had been screened out and proved to be effective in breeding programs. The gene, Rhg4, located 0.35 cM from i locus on linkage group A, was related to Race 3 resistance. |
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| Keywords: | Glycines max Heterodera glycines Ichinohe Race identification Genetics of resistance Molecular marker |
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