云南松地理种源的研究

在云南松（ＰｉｎｕｓｙｕｎｎａｎｅｎｓｉｓＦｒ．）全分布区内．按不同经纬度、海拔采集种源．共收到６４个种源进行栽培试验。６年的试验材料证明，各种源间生长差异极为显著．筛选出了苗高为对照１１８．１—１３４．６％的９个优良种源。对云南松形态特征的地理变异规律及其相互间的关系进行了初步探讨。为云南松种源选择和早期鉴定提供依据。

STUDIES ON THE GEOGRAPHICAL PROVENANCE OF PINUS YUNNANENSIS

In this paper, sixty-four provenances of Pinus yunnanensis Fr. were collected from its whole natural range. After six-year cultivation, an analysis of variance among the above provenances and correlation between 11 factors wete carried out. The results indicated that variation among provenances in same experimental plot were very remarkable. So 9 nice provenances of Pinus yunnanensis Fr. were selected from 64 provenances, the height increment of which were faster than that of others. In addition, a preliminary study of the geographical variation of morphological characteristics was also discussed.