胡桃楸种源遗传变异规律的研究

Study on Genetic Variation Law of Juglans mandshurica Provenances

采用方差分析、相关分析等统计方法研究了胡桃楸种源试验林的遗传变异和优良种源的选择。结果表明,胡桃楸种源间的树高、胸径、材积等生长性状的差异都达到显著或极显著水平;胡桃楸的主要性状与经度、纬度、海拔的相关系数都未达到显著水平,呈现随机变异;胡桃楸生长性状与气候因子的相关系数均未达到显著水平,但从相关系数看,年均温、年积温、日照常数和年降水量对生长有一定影响,表现为随着年均温、年积温、日照常数和年降水量的增加,树高、胸径、材积等生长性状的取值增大;舒兰是优良种源,材积比其他种源高出64.03%。

The genetic variation and provenance selection were studied using analysis of variance, correlation analysis and other methods in Jug- lans mandshurica provenance experimental forest. The results showed that the height, DBH and volume among Juglans mandshurica provenance are significant or very significant level The correlation coefficients between the main characters of Juglans mandshurica and the longitude, lati- tude, elevation aren＇ t significant and their variations are random. The correlation coefficients between growth trait of Juglans mandshurica and climate factors are not significant. According to the correlation coefficient, mean annual temperature, annual accumulated temperature, sunshine duration and annual precipitation have impact on growth. With the increasing in mean annual temperature, annual accumulated temperature, sunshine and annual precipitation, these traits of value increase. Shulan is the optimal provenance, its volume 64.03% higher than other provenance.