野栽杂种后代水稻品种对褐稻虱抗性机制的研究  

Studies on the Resistance Mechanism of offspring of wide rice to Nilapravata lugens(stal)

作　　者：肖汉祥[1] 李燕芳[1] 张扬[1] 黄炳超[1] 

机构地区：[1]广东省农科院植物保护研究所,广东广州510640

出　　处：《广东农业科学》2011年第2期14-15,共2页Guangdong Agricultural Sciences

基　　金：国家公益性行业(农业)科研专项(200803003);国家"十一五"科技支撑项目(2006BAD08A04)

摘　　要：根据褐稻虱在不同抗性水稻品种上的生存率、发育进度、蜜露量、群体建立与感虫对照品种TN1上的差异显著性作比较,综合评定了野栽杂种后代水稻品种对褐稻虱的抗性机制。结果显示,野栽杂种后代对褐稻虱的抗生级别为1-3级,存活率为22%-40%,蜜露量为7.4-14.4 mm^2,种群数量为14-32头/雌,均显著低于对照品种TN1。试验结果表明：野栽杂种后代水稻品种对褐稻虱的抗性机制为抗生性。Based on the significant differences between offspring of wide rice and TN~,the susceptible check variety, in a series of resistance indices such as survival, honeydew amount, population establishment, the resistance mechanism of offspring of wide rice to BPH was synthetically evaluated. The results were as follows： The resistant score of offspring of wide rice to BPH is 1-3,it was a high degree of resistance. On offspring of wide rice the survival rate of BPH was 22%-40%, the honeydew amount was 7.4-12.4 mm^2, the number of population establishment was 14-32 per female, the divergence between them were significant. It was confirmed that the resistance mechanism of offspring of wide rice to BPH was antibiotic.

关 键 词：水稻 野栽杂种后代 褐稻虱 抗生性 

分 类 号：S511.02[农业科学—作物学]