【Objective】The objective of the present study was to realize the change and limiting factors of diurnal variation of photosynthesis of winter rapeseed( Brassica rapes L.) under the low temperature before winter.【Method】Under the field condition,the diurnal variations of photosynthesis for winter rapeseed seedling were studied,and the main factors which affected on their photosynthetic rate( Pn) under the low temperature(-1 ℃) in this paper were analyzed. Taken winter rapeseed of Longyou 6,Longyou 7,Longyou ...
ic rate of ultra strong cold resistance varieties of winter rapeseed was less than that of the weak cold resistance varieties under low temperature.【研究意义】光合作用是植物生理代谢的基本单元,是研究环境因素影响植物生长及代谢的重要途径,而光合日变化更能直?
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