| 水稻抗白叶枯病基因的聚合育种 |
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| 引用本文： | 巴沙拉特,丁效华,曾列先,阿克沙,张泽民,曾瑞珍,张桂权. 水稻抗白叶枯病基因的聚合育种[J]. 分子植物育种, 2006, 4(4): 493-499 |
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| 作者姓名： | 巴沙拉特 丁效华 曾列先 阿克沙 张泽民 曾瑞珍 张桂权 |
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| 作者单位： | 1. 华南农业大学广东省植物分子育种重点实验室,广州,510642
2. 广东省农科院植物保护研究所,广州,510642 |
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| 基金项目： | The study was funded under the Transgenic Plant Research and Industrialization Program of China （J99-A-025）. |
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| 摘 要： | 白叶枯病是严重危害水稻生产的重要病害之一,利用聚合多个抗性基因的水稻品种是控制该病害的有效途径。本研究以携带Xa4、xa5、xa13、Xa214个抗白叶枯病基因的IRBB60与8个水稻新品系,组配8个杂交组合.应用分子标记辅助选择技术从F2和F3群体中共获得216个携带4个抗白叶枯病基因的纯合体。用华南地区的5个白叶枯病病原菌小种进行田间接种的试验表明,4个抗性基因聚合系的抗性水平高于只带1个抗性基因的近等基因系。这些聚合系可用作华南地区高抗白叶枯病水稻品种育种的亲本材料。
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| 关 键 词： | 白叶枯病 基因聚合 分子标记辅助选择 水稻 |
Pyramiding Four Bacterial Blight Resistance Genes into Rice Cultivars in South China |
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| Basharat Hussain Shah,Ding Xiaohua,Zeng Liexian,Akshay Talukdar,Zhang Zemin,Zeng Ruizhen,Zhang Guiquan. Pyramiding Four Bacterial Blight Resistance Genes into Rice Cultivars in South China[J]. Molecular Plant Breeding, 2006, 4(4): 493-499 |
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| Authors: | Basharat Hussain Shah Ding Xiaohua Zeng Liexian Akshay Talukdar Zhang Zemin Zeng Ruizhen Zhang Guiquan |
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| Abstract: | Bacterial blight (BB) is one of the most destructive diseases of rice. Use of varieties with multiple resistance genes is an effective way to control the disease. Four resistance genes, Xa4, xa5, xa13 and Xa21 in the near-isogenic line (NIL) IRBB60 from IRRI were pyramided into breeding lines in South China using PCR-based marker-assisted selection. A total of 216 breeding lines with the four resistance genes were selected from eight crosses. The pyramiding lines with four resistance genes showed higher level of resistance to five races of Xanthomonas oryzae pv. oryzae found in South China than the NILs with only one resistance gene. These materials will be useful in rice breeding programs for BB resistance in South China. |
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| Keywords: | Bacterial blight Gene pyramiding Marker-assisted selection Rice |
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