エンドファイト感染ペレニアルライグラスおよびトールフェスクのシバツトガに対する耐虫性

概要

論文の詳細を見る
Perennical ryegrass cultivars grown in field plots were assessed for damage caused by the bluegrass webworm, parapediasia teterrella. Cultivars infected with an Acremonium endophyte were hardly damaged, and no larvae were detected in these plots. By contrast, plots of endophyte-free cultivars were extensively damaged by feeding webworm, and contained larvae. Laboratory feeding assay using petri dishes showed an endophyte inhibitory effect with seedings as young as 3-day old. A choice test showed that bluegrass webworm larvae prefex endophyte-free ryegrass leaves to those infected with the Acremonium endophyte. First instar larvae fed on endophyte-infected perennial ryegrass had lower survival rates than those fed on endophyte-free plants. Death may result from starvation because larvae will not eat infected leaves. Tall fescue plants infected with an Acremonium endophyte also showed resistance to the bluegrass webworm, but resistance was confined to the leaf sheaths.
日本応用動物昆虫学会の論文
1994-08-25