Abstract:

In order to know the ecological adaptability of stevia rebaudiana and provide theoretical support for setting up of stevia rebaudiana production base on Gansu, seven stevia rebaudiana genotypes were introduced from Jiangsu,Hebei,Anhui regions and cultivated for comparative experiment, through to analysis the growth characteristics, yield and stevioside content of stevia rebaudiana, the result showed that stevia rebaudiana had stronger ecological adaptability, which can widely planted in northwest; the dry leaves yield and stalk yield of introduced genotype ZS-4 was the highest, reached 4801.50kg/hm2 and 5647.33 kg/hm2, the rebaudioside A and stevioside content of ZS-3 was the highest, which was respectively 7.69％,12.39％and reached very significant level. comprehensive analysis indicated that stevioside yield of ZS-3 was the highest, which could extend culture on hexi area as advantage genotype , and ZS-4 also had certain value to popularize.