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中国农学通报

中国农学通报 ›› 2011, Vol. 27 ›› Issue (15): 263-268.

所属专题： 水稻； 农业生态

• 植物保护 农药 • 上一篇    下一篇

云南元阳哈尼梯田不同时期种植的地方品种稻瘟病抗性评价

严红梅 李进斌 汤翠凤 杨雅云 徐福荣   

  • 收稿日期:2010-12-13 修回日期:2011-01-21 出版日期:2011-06-25 发布日期:2011-06-25

Resistance Evaluation to Rice Blast of Rice Landraces Which Grown in Two Different Periods in Hani’s Terraced Fields in Yuanyang County, Yunnan Province

  • Received:2010-12-13 Revised:2011-01-21 Online:2011-06-25 Published:2011-06-25

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摘要：

以云南稻作生产上出现频率比较高的两个稻瘟病生理小种007和017，对元阳哈尼梯田20世纪70年代（简称“过去品种”）与近10年间（简称“当前品种”）两个不同时期种植的148个水稻地方品种进行苗期接种鉴定。结果显示，针对来自粳稻区生理小种007，抗性品种的比例为过去品种（76.4%）>当前品种（65.8%）；针对来自籼粳交错区生理小种017，过去品种（77.8%）>当前品种（52.6%）；抗稻瘟病的品种比例均为过去种植的品种高于当前种植的品种。对元阳哈尼梯田当前种植的水稻地方品种的致病性，来自籼粳交错区的生理小种017强于来自粳稻区的007，表现抗病的品种比例分别为52.6%和65.8%。最终筛选出‘老粳糯’、‘紫糯’、‘长毛香’、‘冷水谷’和‘丫多谷’5个品种，在两个不同时期的持久抗性呈一一对应关系，可提供深入研究与育种利用。

关键词: 响应面, 响应面

Abstract:

Seedling inoculation was carried out about 148 rice landraces, grown in two different periods in Hani’s terraced fields in Yuanyang County, Yunnan Province, including 72 ones that used to be grown during the 1970's (past-grown landraces) and 76 ones that had been grown during the past decade (current-grown landraces), using the two physiological races 007 and 017 that caused relatively high blast frequency in Yunnan rice production. For the race 007, the resistant proportion of the current-grown landraces (65.8%) was lower than that of the past-grown landraces (76.4%). And for the race 017, the resistant proportion of the current-grown landraces (52.6%) was also lower than that of the past-grown landraces (77.8%). In a word, the proportion of blast resistance of the current-grown landraces was lower than that of the past-grown landraces. The pathogenicity on the current-grown landraces of race 017 from the indica-japonica cross-regions was stronger than that of race 007 from the japonica regions, with the number of blast resistant varieties accounting for 52.6% and 65.8% of the total landraces respectively. Therefore, 5 landraces like ‘Laojingnuo’, ‘Zinuo’, ‘Changmaoxiang’, ‘Lengshuigu’ and ‘Yaduogu’ with sustaining blast resistance, which were identified same landraces from two different periods, for the same phenotypic traits and one-to-one correspondence relationship, which could be used for further research and breeding.