A Study on Role of GGR6 in Seedling-raising of Taxus chinensis var. mairei

Investigation of survival rate and testing of increment and biomass of Taxus chinensis var. mairei seedlings by using cuttings treated with different concentrate of GGR6 showed that GGR6 could increase survival rate, height and diameter of seedling. While the cuttings were dipped in the GGR6 of 20 mg·L-1 for 5 hours after they were treated with water for 12 hours, the survival rate of the cuttings was 25. 5% and 16. 2% higher than the survival rate of cuttings treated by the same concentrate of 2,4-D and naphthylacetic acid, two times of the survival rate of seedling dipped in water. Both the height and diameter of the living seedlings treated with GGR6 were higher than that of other treatment. The result of this test also showed that it could reduce the effect of the GGR6 to dip quicksets in carbenazim before the quicksets were dipped in the GGR6.