アカスジカスミカメの誘引候補物質の探索 : 寄主となるイネ科雑草の放出物

概要

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To find out candidates of attractants for rice stink bug Stenotus rubrovittatus, the emissions from five grass species Echinochloa crus-galli var. formosensis, E. oryzicola Vasing, E. crus-galli var. caudata, Setaria faberi, S. glauca and Digitaria ciliaris were analyzed with a gas chromatography mass spectrometer (GC-MS). (Z)-3-Hexenal and (Z)-3-hexenol were emitted by all the plants of which leaves or ears were wounded. Hexanal, (E)-2-hexenal and (Z)-3-hexenylacetate were emitted by E. crus-galli var. formosensis, E. crus-galli var. caudate and D. ciliaris. The rice stink bag preferred D. ciliaris, which emitted (Z)-3-hexenylacetate in a largest amount among the grasses tested. When the rice sting bags were caged into the enclosure bag containing D. ciliaris, linalool and cineol were identified. They were emitted either from the rice sting bags or from the grass. In addition to (Z)-3-hexenylacetate, these compounds can be candidates of attractants for the rice stink bug.
2006-07-30