37 新規発根促進物質 N-(フェネチル)コハク酸アミドの生物学的活性の特徴 : オーキシンとの比較

概要

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Using novel root-promoting substance, N-(phenethyl)succinamic acid (PESA), its effective phase for adventitious root formation, its effect on stem elongation and leaf epinastic bending were investigated and compared with some auxin compounds. In adzuki rooting test, PESA was most effective when it applied to cuttings on the third day after preparation, whereas indole-3-acetic acid(IAA) was most effective on the first day. In adzuki stem elongation study, elongation of stem segments imbibed in PESA solution was not promoted, whereas those in IAA and indole-3-butyric acid(IBA) solutions were clearly promoted. In leaf epinastic bending study, IBA, 2, 4-dichlorophenoxyacetic acid and naphthylacetic acid promoted leaf epinasty at the concentration between 0.05 to 5mM, however PESA did not promote it even if treated by 50mM solution. For practical use, we applied PESA to plug seedlings of sweet pepper. Total root length and root dry weight was increased by PESA application, whereas leaf epinasty or stem splitting was not observed. These data suggest PESA is a new class of root-promoting substance which exhibits no auxin-like activities, and useful as a root promotion agent for seedlings of intact dicotyledonous plant.
植物化学調節学会の論文
1999-10-01