Adult Stage Resistances to Brown Planthopper, Nilaparvata lugens of Rice Varieties with Different Seedling Resistances

Abstract

Abstract: Adult stage resistances to the brown planthopper (BPH), Nilaparvata lugens (Stl) of six rice varieties with different seedling resistances were evaluated in Fuyang, Zhejiang Province, China. The six varieties were Shanyou 63（with Bph1 gene）, IR42（with bph2 gene）, IR56 (with Bph3 gene), TN1 (susceptible control) and two newlybred hybrid rice combinations Zhongzheyou 1 and Guodao 6. The rice varieties with moderate resistance or high resistance to BPH at the seedling stage showed resistance at the adult stage. And the varieties highly susceptible at the seedling stage were susceptible at the adult stage. However, the time and degree for hopperburn in field were some different among those susceptible varieties. Hopperburn occurred five days later on Zhongzheyou 1 than on TN1, even if the resistance degrees of those two rice varieties were both at 9 in seedling screening. This suggests that Zhongzheyou 1 had obvious tolerance to BPH which cannot be detected in seedling screening. Therefore, the emphasis should be paid on screening of the adult stage resistance further for new rice varieties which were susceptible at the seedling stage and had good grain quality and (or) high yielding.

Key words: rice variety, Nilaparvata lugens, seedling resistance, adult stage resistance, insect resistance

摘要： 在浙江富阳评价了汕优63（含Bph1）、IR42（含bph2）、IR56（含Bph3）和TN1(感虫对照)以及新近育成的杂交稻中浙优1号、国稻6号等苗期抗性不同的水稻品种成株期对褐飞虱的抗性。结果表明，苗期中抗（5级）以上的水稻品种在成株期均表现出明显的抗性；苗期高感(9级)的水稻品种成株期亦感虫，但田间虱烧出现时间和虱烧程度有所差异。苗期高感的中浙优1号田间“虱烧”发生时间比同样高感的TN1晚5 d，推测中浙优1号对褐飞虱有一定的耐受性，这是在苗期鉴定中不能体现的。因此，应重视对苗期感虫的优良水稻品种的成株期抗性鉴定。

关键词: 水稻品种, 褐飞虱, 苗期抗性, 成株期抗性, 抗虫性

CHEN Feng,FU Qiang,LUO Ju,LAI Fengxiang,GUI Lianyou. Adult Stage Resistances to Brown Planthopper, Nilaparvata lugens of Rice Varieties with Different Seedling Resistances [J]. Chinese Journal of Rice Science.

陈峰傅强罗举,赖凤香,桂连友,. 苗期抗性不同的水稻品种成株期对褐飞虱的抗性[J]. 中国水稻科学.

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