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| 黄瓜白粉病抗性遗传机制的研究 | |
| 引用本文： | 张素勤,顾兴芳,张圣平,邹志荣.黄瓜白粉病抗性遗传机制的研究[J].园艺学报,2005,32(5):899-901. |
| 作者姓名： | 张素勤 顾兴芳 张圣平 邹志荣 |
| 作者单位： | 1. 西北农林科技大学园艺学院,杨凌,712100;中国农业科学院蔬菜花卉研究所,北京,100081 2. 中国农业科学院蔬菜花卉研究所,北京,100081 3. 西北农林科技大学园艺学院,杨凌,712100 |
| 基金项目： | 国家‘863’项目(2001AA241121,2002AA24401,2003AA207120)，农业部蔬菜遗传与生理重点开放实验室资助项目 |
| 摘 要： | 采用多世代联合分析方法, 通过3个抗感杂交组合研究了黄瓜白粉病抗性的遗传规律。结果表明, 3个组合的最适遗传模型皆是两对加性- 显性- 上位性主基因+加性- 显性- 上位性多基因模型(E2120模型) 。组合Ⅰ的主基因遗传率为64.26% ～95.47% , 两对主基因感病相对抗病为部分显性, 两主基因的加性效应及第二主基因的显性效应较大, 两主基因的加性×显性互作效应也较大。组合Ⅱ和组合Ⅲ两主基因的遗传率分别为95.35%和96.04% , 两主基因的加性效应、显性效应和显性度较为相近。 |
| 关 键 词： | 黄瓜 白粉病 抗性 遗传机制 |
| 文章编号： | 0513-353X（2005）05-0899-03 |
| 收稿时间： | 2004-12-08 |
| 修稿时间： | 2004-12-082005-04-13 |
The Genetic Mechanism of Resistance to Powdery Mildew in Cucumber |
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| Zhang Suqin,Gu Xingfang,Zhang Shengping,Zou Zhirong.The Genetic Mechanism of Resistance to Powdery Mildew in Cucumber[J].Acta Horticulturae Sinica,2005,32(5):899-901. | |
| Authors: | Zhang Suqin Gu Xingfang Zhang Shengping Zou Zhirong |
| Institution: | Zhang Suqin~1,2,Gu Xingfang~2*,Zhang Shengping~2,and Zou Zhirong~1 |
| Abstract: | The cucumber powdery mildew resistance was studied with joint analysis of multip le generations. The best fitted model of three resistant suscep tible crosses was two major genes plus polygenes mixed inheritance model ( E2120 model) without excep tion. In cross I, heritabilities ofmajor geneswere 64.26% -95.47%. Formajor genes, susceptibilitywas the dominant partly. The additive effects of the two major genes and the dominant effect of the second major gene were higher. The ep istatic effect of additive ×dominant of two major genes was higher too. The heritabilities ofmajor genes in the crossⅡ and cross Ⅲ were 96.04% and 95.35% , respectively. The additive effect, dominant effect and dominance degree of two major genes were similar in this two crosses. |
| Keywords: | Cucumber Powdery mildew Resistance Inheritance |
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