Abstract
To explore the cause of difference in photosynthetic performance between different cultivars of crops, leaf net photosynt rate (P N) and photosystem 2 (PS2) photochemical efficiency (Fv/Fm), apparent quantum yield of carbon assimilation (φc), electron transport rate, photophosphorylation activity, etc. were measured in two soybean cultivars, Heinong 42 and Heinong 37. At pod setting and filling, significant differences in P N between them were observed. The former with a higher P N (from 7 to 38 %) had a significantly higher leaf thickness, leaf dry mass/area (LMA), chlorophyll content, soluble protein content, apparent quantum yield of electron transport through PS2 (φe), carboxylation efficiency (CE), and ribulose-1,5-bisphosphate carboxylase (RuBPC) activity. The significantly higher P N of Heinong 42 is mainly due to its higher content and activity of RuBPC.
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Jiang, H., Xu, DQ. The Cause of the Difference in Leaf Net Photosynthetic Rate between Two Soybean Cultivars. Photosynthetica 39, 453–459 (2001). https://doi.org/10.1023/A:1015150931227
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DOI: https://doi.org/10.1023/A:1015150931227