Photosynthetic Characteristic of Different Tea Cultivars in Response to Nitrogen Deficiency
Vegetative propagated seedlings of 4 different tea cultivars grown in pots were fertilized with nutrient solution containing 0 mmol/L and 6 mmol/L nitrogen. The growth and photosynthetic characteristics of tea plant were analyzed under normal and nitrogen deficiency stress condition. The results showed that the DW of stem shoot and root DW decreased significantly under the nitrogen deficiency stress condition except the root DW of‘Tieguanyin’. Both the CO2 assimilation and stomatal conductance of ‘Huangguanyin’ and ‘Maoxie’ cultivar decreased significantly under nitrogen deficiency but those of ‘Fuyun 6’ and ‘Tieguanyin’ did not change significantly. Intercellular CO2 concentration of ‘Huangguanyin’ and ‘Maoxie’ cultivar increased significantly, whereas‘Fuyun 6’ and‘Tieguanyin’ did not change significantly. The maximal photochemical efficiency (Fv/Fm) of‘Huangguanyin’ and ‘Maoxie’ cultivar decreased significantly, whereas ‘Fuyun 6’ and ‘Tieguanyin’ cultivar did not change significantly. In conclusion, the damage of photosynthetic system on ‘Huangguanyin’ and ‘Maoxie’ cultivar was more serious than that of‘Fuyun 6’ and‘Tieguanyin’ cultivar under the nitrogen deficiency stress.
国家科技期刊平台
NSTL
万方数据
维普
