缺氧诱导苍耳种子萌发：对种子休眠“抑制剂假说”的质疑。

Induction of cocklebur seed germination by anaerobiosis: A question about the "inhibitor hypothesis" of seed dormancy.

机构信息

Department of Biological Science, Tohoku University, 980, Kawauchi, Sendai, Japan.

出版信息

Planta. 1976 Jan;129(2):109-12. doi: 10.1007/BF00390016.

Abstract

Germination of non-dormant small cocklebur (Xanthium pennsylvanicum Wallr.) seeds was improved by immersing them in water, suggesting that during their germination endogenous germination inhibitors are leached out. However, the same effect could be obtained by the quasi-anaerobic pre-incubation of the seeds. When seeds were fully imbibed, moreover, water immersion could no longer potentiate them to germinate, and only anaerobiosis increased the germination potential, thus raising a question against the "inhibitor hypothesis" of seed dormancy.

摘要

非休眠小藜（Xanthium pennsylvanicum Wallr.）种子的萌发可以通过浸泡在水中得到改善，这表明在萌发过程中，内源萌发抑制剂被浸出。然而，种子的准厌氧预孵育也可以达到同样的效果。当种子完全吸胀后，水浸反而不能增强它们的萌发能力，只有缺氧才能提高萌发潜能，从而对种子休眠的“抑制剂假说”提出质疑。