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转Bt水稻对捕食性天敌黑肩绿盲蝽种群动态的影响
Population dynamics of the predator, Cyrtorhinus lividipennis in transgenic Bt rice fields
王文晶1** 王瑞林1 于福兰2 韩兰芝3 陈法军1
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DOI:10.7679/j.issn.2095-1353.2014.139
作者单位:1. 南京农业大学植物保护学院昆虫学系,南京 210095;2. 山东省济南市济阳县农业局,济南 251400; 3. 中国农业科学院植物保护研究所,北京 100193
中文关键词: 转Bt基因水稻,黑肩绿盲蝽,稻飞虱,种群动态
英文关键词:Transgenic Bt rice, Cyrtorhinus lividip
中文摘要:

   【目的】 为研究转Bt水稻对其非靶标害虫稻飞虱的主要捕食性天敌黑肩绿盲蝽Cyrtorhinus lividipennis种群发生动态的影响。【方法】 本研究以cry1Ac/cry1Ab融合基因型转Bt抗虫水稻“华恢1号”及其对照亲本“明恢63”为供试水稻,于201120122013连续3年在广西兴安县“转基因水稻试验基地”开展大田试验。【结果】 与对照亲本稻田相比,转Bt水稻稻田黑肩绿盲蝽种群发生量有增加趋势,且在2012年出现极显著差异。此外,就被捕食者褐飞虱Nilaparvata lugens和白背飞虱Sogatella furcifera而言,无论在水稻品种,年份还是两者交互作用之间都存在极显著差异;而就两种稻飞虱总量而言,只在不同年份间存在极显著差异,在水稻品种及两者交互作用间不存在显著性差异。进一步通过相关分析表明,20112013连续3年黑肩绿盲蝽与褐飞虱、白背飞虱和两者总虫量之间均存在极显著正相关关系。【结论】Bt水稻稻田捕食性天敌黑肩绿盲蝽的数量较大,这与非靶标害虫褐飞虱和白背飞虱种群发生量较大有关。

英文摘要:

     [Objectives]  The HH1 strain of cry1Ab/cry1Ac Bt-transgenic rice (Bt rice) and its parental line MH63 (non-Bt rice) were selected to study the effects of Bt rice on the population dynamics of Cyrtorhinus lividipennis, the key predator of the brown plant-hopper (BPH), Nilaparvata lugens and the white-backed planthopper (WBPH), Sogatella furcifera. [Methods]  From 2011 to 2013, field experiments were carried out in paddy-fields of Bt and non-Bt rice inXinganCounty,GuangxiProvince. [Results]  The results indicate that C. lividipennis tended to increase from 2010 to 2013, and that there was a significant difference in the population dynamics of C. lividipennis in Bt rice compared to non-Bt rice fields in 2012. There were significant differences in the population dynamics of BPH and WBPH, and their interactions with C. lividipennis, between the two kinds of rice crops among all three sampling years. However, there were only significant differences in the abundance dynamics of BPH and WBPH among the three sampling years. Correlation analysis shows that there was a positive relationship between the abundance of C. lividipennis and N. lugens and S. furcifera in 2011, 2012 and 2013. [Conclusion] We conclude that there are higher predator abundances of C. lividipennis in fields of transgenic Bt rice, probably due in most part to higher abundances of N. lugens and S. furcifera.

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