Two weeks after treatments started,
under normal light, plants treated with 0.75 mM NH4++ 4.25 mM NO3−exhibited significantly promoted
growth. Simultaneously, these plants showed significantly higher degree of granal stacking and photo-synthesis, as well as larger absorption area of root system compared with plants fed with 5 mM NO3−
.Under shading condition, plants fertilized with 0.5 mM NH4++ 4.5 mM NO3−resulted in better growth
and had intact chloroplast ultrastructure and a higher degree of granal stacking, chlorophyll contents and
net photosynthetic rate, as well as larger root system
Two weeks after treatments started,under normal light, plants treated with 0.75 mM NH4++ 4.25 mM NO3−exhibited significantly promotedgrowth. Simultaneously, these plants showed significantly higher degree of granal stacking and photo-synthesis, as well as larger absorption area of root system compared with plants fed with 5 mM NO3−.Under shading condition, plants fertilized with 0.5 mM NH4++ 4.5 mM NO3−resulted in better growthand had intact chloroplast ultrastructure and a higher degree of granal stacking, chlorophyll contents andnet photosynthetic rate, as well as larger root system
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