^(60)Coγ射线处理花卉后M_2代生理特性变化对小气候要素的响应

THE RESPONSE TO CLIMATE FACTORS FOR THE DIFFERENT SPECIFICITY IN M_2 PHYSIOLOGY OF ^(60)Co γ- RAY IRRADIATED FLOWERS

大丽菊和球根海棠花卉的根茎经 1 0Gy60 Coγ射线处理后 ,在M2 代生长盛期分别测定两类处理花卉叶片的生理特性和小气候要素。经岑回归分析 ,结果显示 ,M2 代大丽菊的蒸腾速率、气孔导度、细胞间隙CO2 浓度对小气候要素反应敏感 ,而光合速率反应不敏感 ,球根海棠则反应迟钝。

Physiology and climate factor of different M 2 flower(Begonia tuberhybricla Voss and Dahlia pinnata Cav root) after 60 Co γ- ray irradiated were determined. The result showed that transpiration rate, stoma conductance, intercellular CO 2 concentration of M 2 of Dahlia pinnata Cav are affected obviously with climate factors, however, effect on the photosynthetic speed was not found, and M 2 of Begonia tuberhybrida Voss was not significant for physiology to climate.