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以11个不同种源地引种的2年生山杏无性系苗木为试材,对引种山杏不同季节的光合生理参数进行了测定。结果表明:不同种源引种山杏在辽西地区的光合、蒸腾作用类型随季节变化呈现单、双峰型变化,存在“光合午休”现象;不同生长季节各种源山杏通过叶片气孔对各项光合生理活动进行有效调节,春、秋季水分利用率高,保水能力强,夏季的高温、干旱气候不利于引种山杏的生长。俄罗斯西伯利亚杏生长期短,春季的光合、蒸腾作用高于夏、秋季节,引种驯化后对辽西生境的适应能力增强;西北黄土丘陵区野杏的遗传变异性大,生态幅宽,不同季节的光合生理活动存在较大差异,进行品种选育的潜力大;内蒙古地区西伯利亚杏的光合生理活动与辽西地区的山杏类似,对引种地环境的适应能力较强。
The 2-year-old Chinese apricot seedlings introduced from 11 different provenances were used as materials to determine the photosynthetic physiological parameters of the introduced apricot in different seasons. The results showed that the types of photosynthesis and transpiration induced by different provenances in the western Liaoning showed single and bimodal changes with the phenomenon of “photosynthesis lunch break ”; in different growing seasons, Various photosynthetic physiological activities are effectively regulated, with high water use efficiency in spring and autumn and strong water retention capacity. The high temperature and arid climate in summer are not conducive to the growth of introduced apricot. Russia Siberian apricot has short growth period, photosynthesis and transpiration in spring are higher than those in summer and autumn, and adaptability to habitat in western Liaoning is enhanced after introduction and acclimation. The genetic variability of wild apricot in Northwest Loess Hilly Region is large, Photosynthetic physiological activities there is a big difference, the potential for breed breeding; Siberian apricot in Inner Mongolia photosynthetic physiological activities and the western Liaoning almond similar to the introduction of the environment adaptability.