The Preliminary Study on Gamete Induction and Seed Germination of Cross-offspring of Rosa chinensis

The experiment of crossbreeding among the cultivars of rose,Rosa chinensis,in the fields and greenhouse was carried out.The fruit set rate of rose inducted by different colchicine concentrations(0.1%,0.2%)in bud and the germination rate of seeds soaked in 1 mol/L HCl and H2SO4 with different soaking time(15min,30min,45min and 60min)were calculated.The results indicated that the fruit set rates of rose inducted by colchicine was lower than that of control,the germination rate of seeds soaked in 1 mol/L HCl for 45min was the highest(28%)and that of seeds soaked 1 mol/L H2SO4 for 30minwas the second(20%).