アルキル基及び臭素置換フェノール類とフェノキシ酢酸類の植物生理活性 : 3-位または4-位低級アルキル基置換の場合

概要

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Thirty-one brominated compounds of 3-(or 4-) alkylphenols and phenoxy acetic acids and their analogs were synthesized and their herbicidal activities were evaluated. Some compounds were known as PGR; however, their herbicidal properties were little known. The purpose of the present study is to make clear the relationship between their structures and their activities. The results are summarized as follows: (1) In germination test; many compounds of phenoxyacetic acids showed strong prohibiting activities for the root elongation, and also for the shoot elongation of brassicaceae, but there was no prohibiting ativity for the growth of gramineae. (2) In spray test with 500ppm solution, most of the compounds showed the weak prohibiting activities and also some hormonal activities to brassicaceae, solanaceae and cucurbitaceae. (3) phenol type compounds showed weak prohibiting activity. (4) phenoxy-α-propionic acid type compounds showed the activity of PGR. (5) Generally speaking, brominated compounds showed weaker prohibiting activities than those of chlorinated compounds.
明治大学の論文