浙南地区杉木杂交组合再选择的研究

对4片定植于浙江和江西两地的全同胞试验林进行调查,评选出的若干优良杂交组合,进行重复制种和区域 化造林试验。于2001年11月份调查了遂昌试点3年生的杉木全同胞试验林,测定树高,地径,轮盘数,冠幅和成活 率5个性状,经过方差分析,方差一协方差分析和综合指数分析,初步评出9702(龙15×1339);9706(1419×1339); 9703(龙15×闽33)3个全同胞家系,其表聊突出,3年生树高超过223 cm,同时适应性也强,造林成活率在97．9％ 以上,值得在浙江省南部类似地区推广应用。

Preliminary Study on Crossing Combination Reselection of Chinese Fir for the Southern Area of Zhejiang Province

4 testing plantations of full-sibs of Chinese fir set up in two sites of Zhejiang and Jiangxi before 1980 ' s were investigated , and their trial data were analysed. Some better crossing combinations were evaluated. The controlled crossing of these combinations were gained by artificial pollination. Regional afforestation experiments were conducted. By analysis on testing plantation data of 17 crossing combinations of Chinese fir at 3 ages, genetic variation , genetic relationship and other parameters in total height, diameter at the base, round numbers, the crown of tree and survival rate were studied. According to comprehensive selection index, three good and outstanding crossing combinations were obtained:9702,9706 and 9703. Their genetic gains were very obvious: height 9.18% ; diameter at the base 7. 07% ; round numbers 2.81% ; the crown of tree 7. 73% and survival rate 1. 24% . They were worth to be popularized in the Southern area of Zhejiang Province.