寄主植物对田间稻水象甲一代成虫取食斑数量与长度关系的影响  

Effect of Host Plant on Relationship Between Number and Total Length of Feeding Scars of the First Generation Adults of Rice Water Weevil in Fields

作　　者：蔡雪涛[1] 郑永敏 商晗武[3] 杨琼[1] 唐启义[1] 郑雪浩 程家安[1] 祝增荣[1] 

机构地区：[1]水稻生物学国家重点实验室环境生物学研究室/浙江大学昆虫科学研究所,浙江杭州310029 [2]浙江省乐清市柳市镇农业综合服务站,浙江乐清325600 [3]中国计量学院,浙江杭州310018 [4]浙江省乐清市植物检疫站,浙江乐清325600

出　　处：《中国水稻科学》2007年第3期309-315,共7页Chinese Journal of Rice Science

基　　金：国家重点基础研究发展计划(973计划)资助项目(2002CB111403-3)

摘　　要：在2004年和2005年两年的田间实验中,研究分析了每丛植物上稻水象甲一代成虫的取食斑数量与长度间的线性回归关系。每丛稗草上的稻水象甲取食斑总量显著高于水稻、异型莎草和李氏禾上的;两种寄主植物的两种移栽期的组合、4种不同寄主植物各2次观察得到的共16组每丛植物上的稻水象甲取食斑数量和总长度间的直线回归方程均显著;植物种类对回归系数有显著影响,以稗草上的最大。这些回归方程对稗草和水稻的不同移栽期总体而言是稳健的,但对不同观察期则不稳健。本试验建立的取食斑数量与总长度的直线回归法可用于稻水象甲控制阈值的确定、稻水象甲入侵早期的取食量及成虫密度初步推断、抗稻水象甲的水稻种质资源评估以及应用一些象甲控制外来入侵植物时的寄主专一性测定。The relationship between the number and the total length of feeding scars of the first generation adults of the rice water weevil （RWW）, Lissorhoptrus oryzophilus Kuschel （Coleoptera： Curculionidae） was analyzed in field experiments during 2004 and 2005. The feeding scars on the barnyardgrass （Echinochloa crusalli L. ） leaves overnumbered those on leaves of rice, Cyperus difformis and Leersia herxandra. All 16 couples of relationships between the number and the total length of feeding scars for combinations of 2 host plant species and 2 transplanting dates, 4 different species with 2 measurements respectively, were significantly positive linear. The plant species had significant effect on the regression coefficients, with the highest one on barnyardgrass. Such linear regression was robust for rice and barnyardgrass with different transplanting dates, but was not stable for different measure dates in most cases. The regresion approach could be used for preliminary quantitatively inference of total feeding （and then density） of RWW at the early stage of invasion in a newly RWW invaded habitat, for evaluation of RWW resistant rice germplasm, and for test of host plant specificity in selection of biocontrol candidate agents of alien invaded weeds.

关 键 词：稻水象甲 取食斑 稗草 回归分析 预测预报 

分 类 号：S435.112[农业科学—农业昆虫与害虫防治]