The Build Of The System Of Fast Reproduction Of Radix Glycyrrhizae And Primary Reasons Of Effect

the build of the system of fast reproduction of Radix Glycyrrhizae. Using aseptic seedling of spouted licorice seeds as exophyte, and introduce 6-BA 0.2-0.5 mg/L, NAA 0.01-0.025 mg/L into MS culture medium as inducing medium. The substances, 6-BA 0.4-0.15 mg/L, NAA 0.1-0.15 mg/L are used in the culture medium for continue a generation for multiplication. The result of the examination shows that, both culture mediums have the function of speed up the reproduction; the basic generation can reproduce more than 3 times. 60% of rooting proportion is exceeded by using 1/2 MS plus NAA: IAA=0.5: 0.1 mg/L, NAA: IBA=0.5: 0.1 mg/L, and only NAA=1 mg/L and 1/2 MS is mixed into the plain rooting culture medium. The highest rate of rooting proportion is produced while using the plain culture medium with no hormone mixed, the rooting proportion exceeds 80% and over. MS plain culture medium produces the best result of spout of seeds, where it can also strengthen seedlings. After 5 generations of reproduction, the hormone shall be gradually taken out of the culture medium; of MS plain culture medium is used once only to strengthen the seedlings. The vitrified seedlings can be cured (or recovered) into normal seedlings by MS plain culture medium or 1/2 MS plain culture medium. 85% of survival rate can be achieved in transplants by using turfy soil:Pearlite =1: 1.