【摘要】 本文根据红皮云杉(Picea koraiensis Nakai)全分布区第一次种源试验10年生、9个种源、9个参试点3类10个性状的系统研究表明:红皮云杉天然分布区内存在着丰富的遗传变异,影响性状变异的决定因素是经度,子代生长性状的变异与经度呈正相关。水分因子是产生变异的主导因子。来自经度高、雨量大的地区的种源生长快、冠幅大、保存率高,体现了由西向东,由干到温的气候生态模式。更多还原

【Abstract】 According to data from ten-year-old of provenance of Picea koraiensis, a study on the geographic variation of Picea koraiensis was made, using ten characters from nine provenances in nine sites. The results show that there exists a rich genetic variation within the natural distribution area of Picea koraiensis. Longitude and water are main factors to the variation. It shows a positive correlation between offspring’s growth characters and longitude, and possesses an obvious trend along west-east and dry-humid changes. The provenance from high logitude area, with rich precipitation, grows fast, and has big crown as well as high survival rate.更多还原