摘要
以６个生态型中的２４个种源或林分的种子在本溪、兴城、北票３个试验地研究油松局分布区种源地理变异规律。结果表明，油松是遗传性具有较大地理变异的树种。各生态型间和生态型内部种源间都存在着明显的地理变异，生态型间的地理变异要比生态型内部种源间的地理变异大得多。各种源的生长量指数和稳定性指数与其原生地的经纬度多呈极显著正相关，而与海拔高相关不紧密。
The geographical variation of 24 Pinus tabulae formis provenances or seeds of the stands in its partial range of 6 ecotypes were studied.Results showed that there exsisted obvious the geographical variation in the provenances between the ecotypes and in the ecotypes.The geographical variation between the ecotypes is much bigger than that in the ecotypes.The growth index and the stability index for each provenance and its longitude and latitude assume positive correlations,there are no significant correlations within evelvation.
出处
《陕西林业科技》
北大核心
1995年第1期12-17,共6页
Shaanxi Forest Science and Technology
关键词
油松
局分布区
生态型
种源
Pinus tabulae formis
Partial range
Ecotype
Provenance
