| 利用分子标记辅助选择改良培矮64S的稻瘟病抗性 |
| |
| 引用本文： | 董巍,李信,晏斌,吴昌军,高冠军,包亮,李一博,朱雪萍,何予卿.利用分子标记辅助选择改良培矮64S的稻瘟病抗性[J].分子植物育种,2010,8(5). |
| |
| 作者姓名： | 董巍 李信 晏斌 吴昌军 高冠军 包亮 李一博 朱雪萍 何予卿 |
| |
| 作者单位： | 华中农业大学作物遗传改良国家重点实验室,国家农作物分子育种中心,武汉,430070 |
| |
| 基金项目： | 农业部行业计划，农业部现代农业产业技术体系、科技部863计划，植物转基因专项 |
| |
| 摘 要： | 培矮64S是广泛应用于我国两系杂交水稻的光温敏核不育系,但稻瘟病抗性较差,高感叶瘟和穗颈瘟。本研究通过分子标记辅助选择的方法将稻瘟病抗性基因Pi-1、Pi-2从供体BL6中回交聚合到培矮64S中,并筛选得到的10株改良株系。改良株系对稻瘟病叶瘟和穗颈瘟的抗性明显增强。其中1752S-1,1752S-2,1783S和1789S花粉育性整体表现良好,在长日低温条件下的花粉不育率均达到99.5%以上,且与对照培矮64S在0.05水平没有显著差异。另外,1752S在各农艺性状的综合考察上呈现出明显优势,尤其是产量相关性状优势明显。
|
| 关 键 词： | 光温敏核不育系 分子标记辅助选择 育性 稻瘟病抗性 水稻 |
Improving the Blast Resistance of Peiai64S through Marker-Assisted Selection |
| |
| Dong Wei,Li Xin,Yan Bin,Wu Changjun,Gao Guanjun,Bao Liang,Li Yibo,Zhu Xueping,He Yuqing.Improving the Blast Resistance of Peiai64S through Marker-Assisted Selection[J].Molecular Plant Breeding,2010,8(5). |
| |
| Authors: | Dong Wei Li Xin Yan Bin Wu Changjun Gao Guanjun Bao Liang Li Yibo Zhu Xueping He Yuqing |
| |
| Institution: | Dong Wei Li Xin YanBin WuChangjun Gao Guanjun Bao Liang Li Yibo ZhuXueping He Yuqing National Key Laboratory of CropGenetic Improvement,Huazhong Agricultural University,National Centerof PlantGene Research,Wuhan,430070 |
| |
| Abstract: | Peiai64S is an elite two-line photo-thermo sensitive genic male sterile which is used widely in China.However,it has a weak resistance to rice blast,extremely vulnerable to leaf blast and neck blast.Two blast resistance genes Pi-1 and Pi-2 were pyramided into Peiai64S by backcrossing with the donor BL6 through marker-assisted selection,and ten improved lines were obtained,The improved lines all performed well in the test of leaf blast and neck blast under natural field condition showing increased resistance... |
| |
| Keywords: | TGMS Marker-assisted selection Blast resistance Fertility Rice |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
