沙棘种源试验研究

Research on the Provenance Test of Hippophae rhamnoides L.

本文对4个试验点的5年生沙棘种源试验林的营养生长和生殖生长的结果进行了分析和评价。试验表明,沙棘不同种源的营养生长和生殖生长以及果实生化成分都存在明显的差异。这与产地的纬度、经度、海拔高度有显著的相关性。地处中纬度、高海拔的甘肃、宁夏、青海等省(区)的中西部种源,其早期营养生长表现出明显优势。地处高纬度、低海拔的内蒙、河北、山西等省(区)的华北种源,果实较大,成熟较早,总糖含量较高,但V_c、总酸含量较低。这为生产上种源选择、引种、育种提供了科学依据。

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.