Plant Science Research Division, Agricultural Research Service, United States Department of Agriculture, Beltsville, Maryland 20705.
Plant Physiol. 1972 Feb;49(2):127-30. doi: 10.1104/pp.49.2.127.
Germination of Rumex obtusifolius L. seeds is potentiated to an observable degree in 2 minutes by a single shift in temperature from 20 to 35 C. Half-maximal potentiation requires less than 32 minutes at the higher temperature. Similar sensitivities to shifts in temperature were observed for seeds of Barbarea vulgaris, R.Br. B. verna (Mill.) Asch., and Lepidium virginicum L. A shift in temperature interacts strongly with change in form of phytochrome induced by light on germination of the four kinds of seeds. The potentiated effects for R. obtusifolius are only moderately affected by 40 mum cycloheximide. Both the temperature shift and light actions are apparently independent of processes of synthesis necessary for growth.
翻酸模叶蓼种子在 20 摄氏度到 35 摄氏度的单一温度转变下，萌发程度明显增强，在 2 分钟内即可观察到。在较高温度下，半数最大增强作用需要不到 32 分钟。巴巴多斯藜、巴巴多斯野菥蓂和山黧豆的种子对温度变化的敏感性也相似。温度变化与光诱导的赤霉素形态变化在这四种种子的萌发中强烈相互作用。翻酸模叶蓼的增强效应仅受 40μm 环己酰亚胺的适度影响。温度转变和光作用显然都与生长所需的合成过程无关。
