Dynamic light caused less photosynthetic suppression rather than more under nitrogen deficit conditions than under sufficient nitrogen supply conditions in soybean

摘要

Substance content and steady-state photosynthetic gas exchange. The specific leaf area (SLA; a), total chlorophyll (Chl) and nitrogen (N) contents (b), light intensity response curve of the net photosynthetic rate (Pn; c), transpiration rate (E; d), stomatal conductance (Gs; e) and intercellular CO2 concentration (Ci; f) as well as the photosynthetic quantum yield (PQY; plot c insert) in the leaves of high nitrogen (HN; filled)- and low nitrogen (LN; closed)-supplied plants. Means ± SD, n = 6. The asterisks indicate significant differences at P < 0.05 between HN and LN leaves (T-test)