Damage of Rice Grains caused by the Rice Bug, Leptocorisa oratorius Fabricius (Heteroptera : Alydidae)

JIRCAS Journal
ISSN 13407686
書誌レコードID(総合目録DB) AA11030483

The symptoms associated with grain damage caused by the rice bug were examined using grain samples collected from farmers' paddy fields in relation to the occurrence of the insect. The erythrosine dye was used to stain the stylet sheaths produced by rice bugs on damaged grains. The main symptom associated with rice bug damage was the presence of unfilled grains. The unfilled grains showed a dark spot on the grain surface, but not when they were damaged at the very early stage of grain formation. These grains were considered to be damaged by the rice bug when they were re-stained to observe the stylet sheaths which penetrated into the grain. No damage of the ovary before the onset of grain development was observed. Grain damage mainly occurred from the very early stage of grain development to the milk-ripe stage when the rice bug infestation was severe. However, a considerable proportion of grains was damaged at the dough and hard-dough stages when the level of insect infestation was lower.

著者キーワード Sri Lanka Stylet sheath
公開者 Japan International Research Center for Agricultural Sciences
国立情報学研究所メタデータ主題語彙集(資源タイプ) Journal Article
開始ページ 13
終了ページ 17
権利 Japan International Research Center for Agricultural Sciences
言語 eng