Study on the seed biological characteristics of two types of Gentiana plant seed in Qinghai
Gentiana veitchiorum Hemsl.and Gentiana siphonantha Maxim.are taken as research ob-jects to explore the germination characteristics of Gentiana plant seed in Qinghai and improve the uti-lization rate of its seed.The biological characteristics of their seeds are observed and analyzed.The effects of clean water treatment and different concentrations of gibberellin(GA3)on the seed germina-tion are compared as well.The results are as follows:Compared with G.siphonantha Maxim.,the size of G.veitchiorum Hemsl.seeds is small,with light weight and fast water absorption rate.Under the condition of clean water treatment,the germination period of G.veitchiorum Hemsl.seeds is short,while its germination rate is lower than that of G.siphonanth Maxim.seeds,and the elongation speed of the hypocotyl is slower.Under different concentrations of gibberellin treatment,GA3 treatment at a concentration of 300 mg/L can significantly improve the germination rate of G.veitchiorum Hemsl.seeds,while GA3 treatments at the concentrations of 200 mg/L and 250 mg/L can effectively improve the germination rate of G.siphonantha Maxim.seeds.The research results can provide reference basis for the development and utilization of G.veitchiorum Hemsl.and G.siphonantha Maxim.in Qinghai.
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