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5个水稻材料对褐飞虱及白叶枯病的抗性评价
作者: 何文强1  2  裘俊丽1  2  刘开雨2  刘 芳1  2  邱永福1  2 *  李容柏1  2 *  
单位: (1 广西大学农学院;2 亚热带农业生物资源保护与利用国家重点实验室:南宁 530005)  
关键词: 水稻  褐飞虱  白叶枯病  磷营养胁迫  抗性评价  
分类号:S435.112.3;S435.111.47
出版年,卷(期):页码:2012 ,43 ( 6 ): 页码:767-770
摘要:

【Objective】An experiment was conducted to evaluate rice resistance to brown planthopper (BPH) and bacterial leaf blight (BLB) in order to provide references for breeding rice varieties resistance to BPH and BLB. 【Method】Five conventional rice varieties viz., 9311 (no anti-brown planthopper gene), Mudgo (with Bph1), Rathu Heenati(with Bph3), Swarnalata(with Bph6) and Pokkali(with Bph9) were used to identify resistance to BPH [mixed-biotype of nanning] and BLB [strong-pathogenic bacteria of Fangchenggang] using seedling bulk test and artificial clipping leaf method with phosphorus stress. 【Result】The rice lines (Pokkali, Swarnalata, Rathu Heenati and Mudgo) were moderately resistant to BLB under 40 mg/L of phosphorus stress, and high resistant to BLB under 0.25 mg/L of phosphorus stress. Pokkali showed high resistance in conventional BPH identification and BLB under phosphorus stress. 【Conclusion】It could be an effective way to improve rice resistance to BLB under low phosphorus stress. Considering its high resistance to BPH and BLB, Pokkali could be used as resistant breeding material.

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