吲哚乙酸参与生菜果实（莴苣 cv. 大瀑布）的热休眠。

The involvement of indole acetic acid in the thermodormancy of lettuce fruits, Lactuca sativa cv. Grand Rapids.

机构信息

Botany Department, The University, G12 8QQ, Glasgow, UK.

出版信息

Planta. 1976 Jan;131(3):309-13. doi: 10.1007/BF00385432.

Abstract

At 20° C and at 30° C in darkness, concentrations of indole acetic acid (IAA) greater than 10(-7) M inhibited the germination of Grand Rapids lettuce at 24 h and 48 h after the beginning of imbibition. There was no marked, readily defined period of inhibition during germination that could be associated solely with an effect of IAA on suppressing radicle extension. Gibberellin A4+7, benzyladenine and red light were capable of reversing the effects of IAA. There was no consistent pattern of change in the low endogenous levels (less than 11 μg kg(-1)) of extractable IAA during the first 30 h after imbibition.

摘要

在 20°C 和 30°C 的黑暗条件下，吲哚乙酸（IAA）浓度大于 10（-7）M 会抑制大激流生菜在吸水后 24 小时和 48 小时的萌发。在萌发过程中，没有明显的、可单独归因于 IAA 抑制胚根延伸的抑制期。赤霉素 A4+7、苄基腺嘌呤和红光能够逆转 IAA 的作用。在吸水后 30 小时内，可提取的 IAA 的低内源性水平（低于 11 μg kg（-1））没有一致的变化模式。