摘要
应用分泌蜜露量、种群趋势指数、内禀控制率、群体建立和田间控制率等指标，综合评价新品系红源和台糯选对褐稻虱的抗性，结果表明：（１）饲养在红源和台糯选上褐稻虱的成虫体重、分泌蜜露量、产卵量和若虫存活率均比在感虫品种ＴＮ１的低，表明品系对褐稻虱具有强抗生作用；（２）飞虱在ＴＮｌ上的种群趋势指数为２４７．７，台糯选为３８．２，红源为３８４，而抗虫品种Ｍｕｄｇｏ为１０．６；（３）台糯选、红源和Ｍｕｄｇｏ的内禀控制率分别为８４．５８％、８４．５０％和９５．７２％；（４）田间控制率：红源为７０．３８％、台糯选为８２．９５％和Ｍｕｄｇｏ为８８．７７％。
The parameters of the amount of honeydew excretion,the population trend index, the intrinsic control rate,the population build up experiment and the field control rate were used as integration evaluation resistance of new rice lines Hong Yuan and Tainuo Xuan to the brown planthopper(BPH).The results were as the follows:(1) The weight of honeydew excreted and body weight of adults fed on above two lines were lighter than those on suseeptible variety TNI.The number of egg laid per female,nymphal survival(%)and the next genertion population number of BPH on these two lines were less than that on TNI. These results showed that the rice lines had antibiosis effect on the BPH (2)The population trend index of * Wu JungtsungTN1,Tainuo Xuan and Hong Yuan were 247.7, 38.2 and 38.4 respectively,Whilethe resistant variety Mudgo was 10.6.(3) The intrinsic control rate ofTainuo Xuan,Hong Yuan and Mudgo were 84.58%,84.50% and 95.72%respectively.(4)The field control rate of Hong Xuan was 70.38 %,Tainuo Xuanwas 82.95% and Mudgo was 88.77%。
出处
《华南农业大学学报》
CAS
CSCD
1994年第2期67-72,共6页
Journal of South China Agricultural University
关键词
褐稻虱
抗虫品种
抗生性
水稻
育种
Brown planthopper
Resistant variety
Antibiosis
Intrinsic control rate
Field control rate
