不同温度及赤霉素处理对少花龙葵种子萌发与出苗的影响

Effects of Different Temperature and GA_3 Concentrations on Seed Germination and Seeding Emgergence of Solanum photeinoca rpum Nakamura et Odashima

研究了不同温度及赤霉素处理对少花龙葵种子萌发与出苗的影响,结果表明,少花龙葵种子发芽的临界温度为8.06℃,有效积温范围在82-123℃;出苗的临界温度为8.66℃,有效积温的范围在122-182℃;适宜的发芽和出苗的温度为18-22℃。赤霉素处理浓度在100-200 mg/L对种子发芽势、发芽率和出苗率均有明显提高,同时平均发芽天数和出苗天数均缩短。

Effects of different temperature and GA3 eoneentrationson seed germination and seeding emgergenee of S. photeinoca rpum Nakamura et Odashima were studied. The result showed that the critical temperatur for seed germination was 8.06 ℃ ,The effective cumulative temperature was 82 - 123 ℃. The critical temperature for seeding emergence was 8.66 ℃ ,The effective cumulative temperature was 122 - 182 ℃ ,The suitable temperature for the seed germination and seeding emergence was 18 - 22 ℃ ;GA3 at the concentration of 100 - 200 mg/L remarkably improved the germinating power, the germinating rate and emergence rate of the plant, and shortened its average germination and emergence days.