| 杂交稻稻瘟菌致病菌系的组成及其变化 |
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| 引用本文： | 彭云良,陈国华,杨晓蓉,沈瑛,何明,曾德初.杂交稻稻瘟菌致病菌系的组成及其变化[J].植物保护学报,1995,22(3):247-250. |
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| 作者姓名： | 彭云良 陈国华 杨晓蓉 沈瑛 何明 曾德初 |
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| 作者单位： | 四川省农业科学院植物保护研究所，四川省农业科学院植物保护研究所，四川省农业科学院植物保护研究所，四川省农业科学院植物保护研究所，四川省农业科学院植物保护研究所，四川省农业科学院科技处 成都 610066，成都 610066，成都 610066，成都 610066杭州中国水稻研究所，成都 610066，成都 |
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| 摘 要： | 对四川省大面积主栽杂交稻组合汕优６３、汕优２号上的稻瘟病菌进行生理小种测定的结果表明，致病菌系由多个生理小种群组成，其中以ＺＢ、ＺＣ群小种为主。用不同生理小种的菌株接种汕优２号和汕优６３的结果表明：ＺＢ群小种对汕优２号的致病频率最高，为１００％，而不同生理小种群对汕优６３的致病频率无显著差异，平均为７５％。致使这两个杂交稻组合丧失抗性的菌株来自四川省发病多年的常规稻、雄性不育系和早熟杂交稻组合。四
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| 关 键 词： | 稻瘟菌 致病菌系组成 杂交水稻 |
STUDIES ON THE CHANGE AND COMPOSITIONS OF PYRICULARIA ORYZAE PATHOGENIC STRAINS ON HYBRID RICE |
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| Peng Yunliang,Chen Guohu,Yang Xiaorong,Shen Ying,He Ming and Zeng Dechu.STUDIES ON THE CHANGE AND COMPOSITIONS OF PYRICULARIA ORYZAE PATHOGENIC STRAINS ON HYBRID RICE[J].Acta Phytophylacica Sinica,1995,22(3):247-250. |
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| Authors: | Peng Yunliang Chen Guohu Yang Xiaorong Shen Ying He Ming and Zeng Dechu |
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| Institution: | Institute of Plant Protection, Sichuan Academy of Agricultural Sciences, Chengdu,Institute of Plant Protection, Sichuan Academy of Agricultural Sciences, Chengdu,Institute of Plant Protection, Sichuan Academy of Agricultural Sciences, Chengdu,Institute of Plant Protection, Sichuan Academy of Agricultural Sciences, Chengdu,Institute of Plant Protection, Sichuan Academy of Agricultural Sciences, Chengdu and Department of Science and Technology, Sichuan Academy of Agricultural Sciences, Chengdu |
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| Abstract: | Physiologic races of ZB and ZC groups were found to be most prevailent among the various Pyricularia oryzae isolates from 2 hybrid rice varieties "Shanyou 2" and "Shanyou 63" after their resistance broke down. The frequencies of ZB group virulent isolates to "Shanyou 2" were the highest (up to 100%) whereas freguencies of virulent isolates of all physiologic races were almost the same (75% in average) on "Shan you 63". The initial sources of the pathogenic strains to the new hybrid rice were found from the regularly grown susceptible rice cultivars, male-sterile parents and other susceptible hybrid rice cultivars planted in Sichuan for many years. |
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| Keywords: | Pyricularia oryzae population hybrid rice pathogenic strain composition |
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