Abstract:

To explore different varieties, low resistance eggplant nitrogen ability of the differences, for nitrogen eggplant variety of low resistance to screen and genetic improvement to provide the theory basis. Four different eggplants varieties used to study their response to low nitrogen stress by comparing their stem diameter, leaf area, plant high, dry weight, root-shoot ratio, N uptake efficiency under normal nitrogen and low nitrogen stress. The results showed that compared with the normal nitrogen supply, mostly varieties of eggplants under low nitrogen supply were decreased in stem diameter, leaf area, plant high, dry weight, root-shoot ratio and N uptake efficiency. But the response of different varieties varied greatly. Under low nitrogen stress, ‘Kuai Yuanqie’ plant height, leaf area, dry weight and N uptake efficiency reduced scope were the lowest, ‘Gai Liangerminqie’ stem diameter, root-shoot ratio and underground part dry weight relative index was the largest, ‘Chao Zhiliangguang’ indicators relative index minimum, ‘Hei Qiewang’ indicators relative index center, ‘Kuai Yuanqie’ and ‘Gai Liangerminqie’ with high nitrogen use efficiency, and ‘Chao Zhiliangguang’ of low nitrogen tolerance for the worst.