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中国农学通报

中国农学通报 ›› 2011, Vol. 27 ›› Issue (27): 260-264.

所属专题： 水稻； 农业生态

• 植物保护 农药 • 上一篇    下一篇

西南地区水稻品种对水稻白叶枯病的抗性分析

王永吉 张丽辉 姬广海 汪绍雪 林琳   

  • 收稿日期:2011-04-11 修回日期:2011-07-05 出版日期:2011-10-25 发布日期:2011-10-25
  • 基金资助:

    农业部公益性(农业)行业科研专项;国家自然科学基金

Evaluation of Rice Varieties Resistance to Bacterial Blight in Southwest Parts of China

  • Received:2011-04-11 Revised:2011-07-05 Online:2011-10-25 Published:2011-10-25

PDF (PC)

872

摘要：

为了明确西南地区不同水稻品种对白叶枯病的抗谱，促进抗病品种在生产上的直接利用。采用云南省、贵州省和四川省当前生产上主栽和即将推出的水稻品种（系）共267个，对2008年和2009年中国目前流行的水稻白叶枯病菌9个生理小种进行了品种的抗性评价。结果表明，C5、C7、C8、C9为西南地区的优势小种，其中只有云南存在抗C8小种的水稻品种，占总参试品种的10.11%。对不同白叶枯菌进行致病力分析表明，C8小种致病力最强，平均病斑长度达(23.7±8.3) cm。研究结果还表明，大面积种植的优质稻红优系列、‘滇屯502’对西南地区白叶枯病菌优势小种表现为高抗。

关键词: 水稻, 水稻, 产量, 品质, RVA特性

Abstract:

In order to clarify the resistance spectrum of different rice varieties to bacterial leaf blight (BLB), promote direct utilization of resistant varieties, 9 Xoo race representative strains were selected to identify the resistance of 267 rice varieties against bacterial blight by clipping inoculation in 2008 and 2009, which were currently in use or will released in the near future in Yunnan Province, Guizhou Province and Sichuan Province. C5, C7, C8, C9 are the Xoo dominant races in the Southwest of China, only rice varieties in Yunnan Province were resistant to C8 strain of race, accounting for 10.11% of the all tested varieties. By analyzing pathogenicity of the different Xoo races indicated that the C8 was the strongest virulence Xoo, the average length of the disease spot was 23.7±8.3 cm .The results also indicated that high quality rice cultivars such as Hongyou series and ‘Diantun502’ etc showed BB resistance against almost the Southwest dominant Xoo races.