Study Of The Growth Difference Of Seedlings In Idesia Polycarpa Among Different Family And Provenance

In order to investigate the geographic variation of Idesia Polycarpa, Select superior provenances, family, type, breeding new varieties.This paper studies the differences in 65 families 12 provenance of seedlings grown sources Idesia polycarpa. According to the results:(1)There were significant differences between different provenances Idesia polycarpa in one year-old seedlings of tree height growth conditions. In all provenances, Chongqing provenance average height was the maximum, and other provenances were significant difference. In all family, relatively good pedigree were Chongqing 2, Guangyuan 59, Zhangjiajie 10, the difference was not significant between the three lines; Due to the high variability of Zhangjiajie10 tree smallest coefficient, description of genetic stability of the strong growth of high pedigree progeny mountain in Zhangjiajie 10.(2)There were significant differences between different provenances Idesia polycarpa annual diameter growth of seedlings status. From all provenances, Chongqing, Zunyi, Zhangjiajie, Guangyuan, Chengdu, Yichang, six kinds of sources mean larger base diameter. And the difference between them was not significant, because Chengdu provenance is the smallest diameter variation coefficient provenance, description strong Chengdu provenance Idesia polycarpa base diameter growth of genetic stability. In all family, relatively good pedigree is 2, the difference between each other Guangyuan59, Zhangjiajie10, Zunyi20 and Chongqing2 was not significant; Since Guangyuan 59 base diameter smallest coefficient of variation, indicating a strong aspect Guangyuan 59 Idesia polycarpa pedigree progeny grow thick genetic stability.(3) There were significant differences between the different provenances Idesia polycarpa annual number of seedling leaves change status. In all provenances, Chongqing, Chengdu, Zhangjiajie, Guiyang four kinds of sources mean large number of leaves, and the difference between them was not significant, provenance is due Chengdu blades smallest coefficient of variation of provenance, indicating Chengdu provenance Idesia polycarpa in terms of the number of blades strong genetic stability. All family, leaves a few more family to Guangyuan59, the difference between each other Chongqing2, Zhangjiajie10, Zunyi20,Lawrence was not significant; Since Zhangjiajie10 Blades smallest coefficient of variation, indicating a strong genetic quantity 10 in Zhangjiajie Idesia polycarpa pedigree progeny blade stability.(5) To grow the tree height, diameter and number of leaves as the basis, the 12 provenances clustered into three groups: The first class, Yichang, and Jiujiang, Chengdu, Zunyi, Guangyuan, Guiyang, Zhangjiajie; The second class, Jiyuan, Lin’an, Luoyang, Ganzhou; The third class, Chongqing.Relatively good race in Zhengzhou breeding groups in southwest China, in the subtropical climate zone.