【摘要】 褐稻虱生物型问题使抗虫品种的选育和利用变得十分复杂。研究生物型形成的规律,用以指导抗虫品种的选育和利用是国际上引人注目的问题。本文根据以前的研究成果,按褐稻虱生物型的发生概况、褐稻虱生物型的特异性、褐稻虱生物型的形成等3个方面进行综合整理。为今后开展这方面研究提供参考。更多还原

【Abstract】 This paper is a review article outlining the present state of research into the biotypes cf brown planthopper (DPH),in which the following aspects of these studies are described:1) Occurence of biotypes:2) Specificity of biotypes:3) Formation of biotypes.While cultivation of resistant rice varieties has proved to be highly effective on the BPH.their long-term stability is threatened by the appearance of prolific biotypes which can destory these varieties.Therefore,both major and minor resistant genes will be used in the present rice breeding researches for effective pest suppression.更多还原