相对激素浓度对侧芽相关性抑制中生长素-赤霉素相互作用的影响。

Effect of relative hormone concentration on auxin-gibberellin interaction in correlative inhibition of axillary buds.

机构信息

Department of Biological Sciences, Exeter University, Exeter, Devon, U.K..

出版信息

Planta. 1971 Mar;96(1):27-34. doi: 10.1007/BF00397901.

Abstract

Indole-3-acetic acid (IAA) applied to the fully elongated second internode of decapitated Phaseolus multiflorus plants always inhibited axillary bud elongation at concentrations down to 100 μg/g lanolin, whereas gibberellic acid (GA3) enhanced bud elongation at concentrations down to 1000 μg/g lanolin. Lower concentrations than these of either IAA or GA3 were without significant effect. All possible combinations of IAA and GA3 within the concentration range 10(1) to 10(5) μg/g lanolin were antagonistic; IAA tending to inhibit, and GA3 promote, axillary bud elongation growth. Treatment of an elongating internode with the hormones resulted in an increase in inhibition of bud growth by IAA in the presence of GA3.

摘要

吲哚乙酸（IAA）涂抹于去顶的多花豇豆完全伸长的第二节间，在浓度低至 100μg/g 羊毛脂时，总是抑制侧芽伸长，而赤霉素（GA3）在浓度低至 1000μg/g 羊毛脂时，促进芽伸长。低于这两种物质的浓度，没有明显的效果。在 10（1）至 10（5）μg/g 羊毛脂的浓度范围内，IAA 和 GA3 的所有可能组合都是拮抗的；IAA 倾向于抑制，GA3 促进侧芽伸长生长。用激素处理伸长的节间，导致在 GA3 存在的情况下，IAA 对芽生长的抑制作用增强。