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| 水稻抗稻瘟病基因Pi-ta与Pi-ta2之间的关系 | |
| 引用本文： | 王忠华,贾育林.水稻抗稻瘟病基因Pi-ta与Pi-ta2之间的关系[J].浙江万里学院学报,2004,17(2):89-92. |
| 作者姓名： | 王忠华 贾育林 |
| 作者单位： | 1. 浙江万里学院,315100;USDA-ARS Dale Bumpers National Rice Research Center,Stuttgart,AR 72160 2. USDA-ARS Dale Bumpers National Rice Research Center,Stuttgart,AR 72160 3. USDA-ARS Rice Research Unit,Beaumont,TX 77713 |
| 摘 要： | 该研究以含抗稻瘟病基因pi-ta和pi-ta2的水稻品种Katy和Kaybonnet为供体亲本的4个F2群体(含2516个单株)为材料,利用已建立的pi-ta显性标记与pi-ta2微卫星标记进行分子检测,结果发现,所有含pi-ta基因的单株都具有pi-ta2,不含pi-ta基因的单株也无pi-ta2,这表明,这两个基因紧密连锁或等位;稻瘟病菌(Magnaporthe grisea)人工接种试验发现所有抗病单株都含pi-ta基因,而感病单株则无.由此表明,在含2516个单株的F2群体中没有发生抗病基因的重组,这进一步验证这两个抗病基因等位或紧密连锁. |
| 关 键 词： | 水稻 稻瘟病 抗病基因 |
| 文章编号： | 1671-2250(2004)02-0089-04 |
| 修稿时间： | 2003年12月3日 |
The Relationship between the Rice Blast Resistance Genes Pi-ta and Pi-ta2 |
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| Robert G.Fjellstrom.The Relationship between the Rice Blast Resistance Genes Pi-ta and Pi-ta2[J].Journal of Zhejiang Wanli University,2004,17(2):89-92. | |
| Authors: | Robert GFjellstrom |
| Abstract: | Four F2 populations containing 2516 individuals derived from rice cultivars containing the rice blast resistance genes Pi-ta and Pi-ta2, Katy and Kay bonnet were used to investigate the relationship between the rice blast resistance genes Pi-ta and Pi-ta2. Dominant Pi-ta gene markers and SSR markers were used to detect the presence of the Pi-ta and Pi-ta2 genes. The results showed that all individuals containing Pi-ta contained Pi-ta2. So it was concluded that Pi-ta is allelic or closely linked with Pi-ta2; Pathogenicity test proved that Pi-ta was not detected in susceptible individuals, only in resistant ones. Furthermore, it demonstrated that no recombination events between Pi-ta and other resistance genes occurred. It was further confirmed that Pi-ta is allelic or closely linked with Pi-ta2. |
| Keywords: | pi-ta pi-ta2 |
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