イネに対するシメトリンの作用および吸収・移行におよぼす温度の影響

概要

論文の詳細を見る
Growth retardation or a toxic sympton of rice plants due to simetryne treatment in fields has been observed under a high temperature condition. Effects of high temperature on mode of its action were surveyed with 14^C-labeled simetryne. In growth cabinets, where temperature was kept at 32'C or at 27'C, rice seedlings at 4 and 6 leaf stage were grown in soil and water culture. Zero to 20 g/a equivalent simetryne were treated to roots through either water or soil. Apparently growth of rice seedlings in the higher temperature was affected much more severely by simetryne compared with those in the lower temperature. The former absorbed simetryne about twice as much as the latter. No large difference in its translocation ratio from roots to shoots was observed between the both. Consequently, it was suggested that simetryne concentrations in shoots were largely dependent upon rates 0L absorption by roots. Although growth of rice at 4 leaf stage was much more affected by symetryne treatment than at 6 leaf stage, little difference was detected in the concentrations in shoots of both stages. Effect of temperature on simetryne metabolism in rice plants is to be surveyed.
日本雑草学会の論文
1982-10-26