EFFECTS OF LIGHT TEMPERATURE AND CHEMICAL TREATMENT ON GERMINATION OF TETRACENTRON SINENSIS SEEDS

Tetracentron sinensis is a valuable tree which is rare. Its seeds have not dormancy. Its reaction to light is different at temperatures, at 25℃ no lightdemanding, at 24—33℃ （most at 28—30℃） light-favored and at 10—20℃ light can promote germination. Optimum germination temperature is 25℃; Seeds which had been cold stratification could germinate in 1.4—8.2℃. KNO₃ could partly relieve temperature demand in seeds germination, GA had this action in just a little.