不同叶色水稻对稻纵卷叶螟醮避虫性初步研究

本试验在使用和不使用农药防治的情况下，以常规品种嘉禾218为对照，对龙特甫B及其两个叶色突变系黄玉B、翠玉B田间纵卷叶螟虫害情况进行了调查。结果表明，两个突变体受稻纵卷叶螟的危害显著轻于龙特甫B，表现为盛发期受稻纵卷叶螟危害产生的虫苞数显著少于龙特甫B，最多时分别下降37．4％和20．5％，而后者与嘉禾218之间没有显著差异。推测造成叶色标记水稻稻纵卷叶螟危害变轻的原因可能与植株叶绿素含量下降，影响幼虫生长发育有关。

A preliminary study on the avoidance of rice with different leaf colours to rice case worm (Chaphalocrocis medinalis)

The occurrence of leaffolders infestation in paddy fields were investigated in plots of Longtefu B and its two leaf color mutant lines Huanyu B and Cuiyu B,with and without pesticide control and using a conventional variety Jiahe 218 as a control. The result showed the damage caused by rice leaffolders (Chaphalocrocis medina )was less severe in the two mutant lines than in Longtefu B with less number of folded leaves were observed in the two mutant lines than in Longtefu B during the peak occurrence time (w...