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广西白背飞虱生物型测定
作者: 黄所生1  黄凤宽1 *  吴碧球1  张雪丽2  农春莲3  凌  炎1  龙丽萍4  
单位: (1 广西农业科学院植物保护研究所  南宁 530007; 2 广西区植保总站  南宁 530022;3 北海市白蚁防治所  广西北海 536000;4 广西农业科学院水稻研究所  南宁 530007)  
关键词: 白背飞虱  致害性  生物型  广西  
分类号:S435.112+.3
出版年,卷(期):页码:2011 ,42 ( 1 ): 页码:46-49
摘要:

【Objective】 The objective of the current study was to determine the biotype structure of white-backed plant hopper (WBPH) in different rice growing areas of Guangxi, and to provide control measures for WBPH. 【Method】 The population group detection method was used to detect virulence of WBPH population in variety TN1(susceptible check), and three test varieties, viz., ARC10239, Ptb33, N'Diang Marie containing Wbph2, Wbph3 and Wbph5 gene, respectively, and biotype of WBPH individual was detected by honeydew quantity detection method under field conditions. 【Result】 WBPH showed different virulence ability at different detection stages. Generally, it showed strong virulence ability in test rice varieties with Wbph1 or Wbph2 genes. WBPH biotype Ⅰ was found in larger proportion in populations collected from different sites. Further, the proportion of WBPH biotype Ⅱ increased at various levels in populations collected from different counties, viz., Longzhou, Hepu, Rongxian, Tianyang, Yongfu during resent years. 【Conclusion】 On the basis of the results, use of the rice varieties with Wbph1 and Wbph2 genes should be avoided in breeding programs tailored to breed WBPH resistant rice varieties. The extended resistant varieties not only resist WBPH typeⅠ, but also have certain degree of resistance to WBPH type Ⅱ.

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