We have obtained a new spring wheat line 89122 with high yield and stress resistance, the starch contents is higher than receptor by 4.04%, the photosynthesis efficiency enhanced 2.64%, the saline tolerance capacity is improved conspicuous and the yield is higher than the control Gao Yuan 602 by 2.21% according to the province test.
5) The 10s-120s laser irradiation has increased the relative restoring force of root system by 80.00-186.67％, Thus the chlorophyll a/b value has reduced. In general, if the a/b value is lower, the photosynthesis efficiency will be raised, which will, in turn, benefit the photosynthesis in weak light;
This corresponded to a photosynthetic efficiency of 8.67% (PAR), which was defined as the percentage of the light energy recovered as biomass (394 kJ/[reactor·d]) to the total light energy received (4545 kJ/[reactor·d]).
A similarly high photosynthetic efficiency (8.12% [PAR]) was also attained in the combined presence of 10% CO2, 100 ppm of NO, and 25 ppm of SO2.
Under this condition, leaf photosynthetic efficiency was tiptop.
This has been suggested as a method of detecting and selecting for increased photosynthetic efficiency among C3 genotypes.
An earlier analysis of leaf area and photosynthetic efficiency revealed a diversity of mechanisms between mutants of the same yield group.