ピラゾスルフロンエチルのイネとミズガヤツリ間における選択殺草性とアセトラクテート合成酵素に対する作用

概要

論文の詳細を見る
Effects of pyrazofuron-ethyl [ethyl 5-[[3-(4, 6-dimethoxypyrimidin-2-yl)ureido]sulfonyl]-1H-1-methypyrazole-4-carb-oxylate] on the groeth and activity of acetolactate synyhase in rice (Ozawa sativa) and C.serotinus plant were investigated. The groeth of root snd shoot was suppressed more remarkably in C.serotinus than in rice. In vitro, the enzyme activity from each orgon of both plants was highly and similarly sensitive to pyazosulfuron-ethyl ; however, in vivo the activity was reduced more remarkably in C.serotinus orgon after tratment with pryazosukffuron-ethyl. Only in rice shoot was the reduction of enzyme activity in vino remarkably recovered as a function of time after treatment. It is presumed that the primary site of action of pyrazosulfuron-ethyl is acetolactate, and that its selectivity depends on the difference in deggree of inhibition on acetolactate synthase actinity in vino as a function of time.
日本雑草学会の論文
1991-10-02