| 家蚕抗核型多角体病分子标记筛选的遗传基础 |
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| 引用本文： | 陈克平,鲁成,向仲怀,姚勤,李木旺,侯成香.家蚕抗核型多角体病分子标记筛选的遗传基础[J].西南农业大学学报,2001,23(3):196-198,204. |
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| 作者姓名： | 陈克平 鲁成 向仲怀 姚勤 李木旺 侯成香 |
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| 作者单位： | [1]西南农业大学蚕桑丝绸学院农业部蚕桑学重点实验室，重庆400716 [2]中国农业科学院蚕业研究所，江苏镇江212018 |
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| 基金项目： | 国家自然科学基金重点项目(39730370)和中国农业科学院“九五”重点课题 |
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| 摘 要： | 家蚕对NPV抵抗性主要受一对位于常染色体上显性基因控制，又为不完全显性，Z染色体上有微效修饰基因，有偏父遗传现象存在。根据其遗传规律的特殊性，提出常染色体上NN主基因和性染色体上Z^ Z^ 修饰基因控制假设，并得到试验验证。利用近等基因系寻找抗性分子标记，其交配方式不同，分别可构建NN，Z^ Z^ ,NNZ^ Z^ 3种近等基因系。同时提出F2群体寻找分子标记的交配方式。
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| 关 键 词： | 家蚕 抗NPV 分子标记 交配设计 抗病性 |
| 文章编号： | 1000-2642(2001)03-0196-03 |
GENETIC BASIS OF CONSTRUCTING F2 POPULATIONS AND NEAR ISOGENIC LINES OF BmNPV RESISTANCE MOLECULAR MARKERS |
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| CHEN Ke-ping ,LU Cheng ,XIANG Zhong-huai ,Yao Qin ,LI Mu-wang ,HOU Cheng-xiang.GENETIC BASIS OF CONSTRUCTING F2 POPULATIONS AND NEAR ISOGENIC LINES OF BmNPV RESISTANCE MOLECULAR MARKERS[J].Journal of Southwest Agricultural University,2001,23(3):196-198,204. |
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| Authors: | CHEN Ke-ping LU Cheng XIANG Zhong-huai Yao Qin LI Mu-wang HOU Cheng-xiang |
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| Institution: | CHEN Ke-ping 1,LU Cheng 1,XIANG Zhong-huai 1,Yao Qin 2,LI Mu-wang 2,HOU Cheng-xiang 2 |
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| Abstract: | NPV resistance in silkworm (Bombyx mori) is mainly regulated by a pair of dominant genes on an autosome. It is, however, not complete dominance, because minor modifer genes are present on Chromosome Z and a patroclinal tendency is shown in inheritance. Based on the hereditary properties of NPV resistance, a hypothesis was proposed and confirmed that the resistance is controlled by NN main gene on an autosome and Z Z minor genes on the sex chromosome. By different mating methods, three near isogenic lines, i.e. NN, Z Z , and NN Z Z , which are used in search for molecular markers of resistance, were constructed. A mating model is put forward for checking molecular markers using the F 2 populations. |
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| Keywords: | Bombyx mori NPV resistance molecular marker mating system |
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