枫杨种源苗期生长性状的初步研究

Growth Traits in Pterocarya stenoptera Provenance at Seedling Stage

对枫杨38个种源的1 a生苗高、地径进行方差分析,用各种源的苗高、地径与地理、气候因子做相关分析。结果表明:各种源间苗高、地径差异显著,苗高、地径与各种源的地理纬度呈负相关,与经度呈正相关。用38个种源的苗高、地径进行聚类分析,结合各种源的地理、气候因素可将各枫杨种源区划为6个种源区:(1)鄞县、黄岩种源区;(2)青岛、沂水、海阳源区;(3)南靖种源区;(4)汉中、武胜种源区;(5)灵川种源区;(6)其余29个种源为一个种源区。根据枫杨苗期的生长表现,初步选择出最佳种源为松滋、潜江种源。

By means of making the standard deviation analysis on the height and base diameter of one - year old seedlings of 38 provenances of Pterocarya stenoptera as well as the correlative analysis on the height, base diameter and the geographic and climatic factors. The results showed that there are variations in the height and base diameter of seedlings of different provenances, the height and base diameterof seedlings are negatively correlated with longitude and positive correlated with latitude. Based on the classified analysis on the height and base diameter of seedlings of 38 provenances and combined with the geographic and climatic factors, 38 provenances are divided into 6 provenance districts：（ 1 ）Yinxian and Huangyan provenance districts; （2）Qingdao, Yishui and Haiyang provenance district; （ 3 ） Nanjing provenance district; （ 4 ） Hanzhong and Wusheng provenance district; （5） Lingchuan provenance district; （6） other 29 provenances belonging to one provenance district. Songzi and Qianjiang are preliminarily considered the optimal provenances of Pterocarya stenoptera in the seedling stage.