Research on the Provenance Test of Hippophae rhamnoides L.

Analysis and evaluation have been made on five-years growth data of provenance tests of Sea Buckthorn from 19 sites at four experimental plantations.There are significant differences in growth in the young tree stage among different provenances of Sea Buckthorn and the differences are obvious with different geographic population variation.The vegetation of the young tree stage will decrease with an increase in latitudes,thereby distinct minus correlation are formed and plus correlatives are formed with an increase in elevation height (except 2 provenances from Tibet).The ratio of the female trees of Sea Buckthorn in the provenance plantation is 50% (female:male=1:1).The variations in fruit size and ripe period are closely correlaed with the different geographical locations of provenances.There are significant variations in the biochemical composition of fruits.It has something to do with the latitude of different provenances.The provenances from Gansu Province and Nin-gxia Hui Autonomous Region located in the mid latitude and West areas of China have more content of vitami-C and total acid,and less content of total sugar.