Charest Christiane, Potvin Catherine
Department of Biology, McGill University, 1205, Avenue Docteur Penfield, H3A 1B1, Montréal, Québec, Canada.
Oecologia. 1993 Mar;93(3):383-388. doi: 10.1007/BF00317882.
To clarify the physiological basis of maternal inheritance we examined the effect of the thermal environment of mother plants of Echinochloa crus-galli on subsequent seed mass, content and quality. The same plants were grown in a warm and a cold environment until seeds were produced and, since E. crus-galli is a highly inbred species, the observed variation in seed production was a purely plastic response to the environment. When mother plants were grown at high temperature, average seed mass, variance and germinability were low. Cold maturation led to the production of more large seeds than warm maturing temperature. The latter seeds were deprived of reserve constituents. Seeds matured at high temperature had high concentrations of K and Mn but lower concentrations of starch and protein.
为阐明母系遗传的生理基础，我们研究了稗草母株的热环境对后续种子质量、含量和品质的影响。将相同的植株分别种植在温暖和寒冷的环境中，直至结出种子。由于稗草是高度自交的物种，观察到的种子产量差异是对环境的纯粹可塑性反应。当母株在高温下生长时，平均种子质量、方差和发芽率较低。低温成熟比温暖成熟温度下产生更多的大种子。后一种种子缺乏储备成分。在高温下成熟的种子钾和锰的浓度较高，但淀粉和蛋白质的浓度较低。
