钟萼木造林3年生长适应性分化与优良个体早期选择探讨  

Study on the growth adaptation differentiation of afforestation effect after 3-years and elite tree selection of Bretschneidera sinensis Hemsl.at the early stage

作　　者：郭祥泉 GUO Xiangquan(The Forest Bureau of Sanming City of Fujian Province, Sanming 365000, China)

机构地区：[1]福建省三明市林业局,福建三明365000

出　　处：《安徽大学学报（自然科学版）》2021年第2期102-108,共7页Journal of Anhui University(Natural Science Edition)

基　　金：福建省林业厅资助项目(闽林科[2014]03号)。

摘　　要：应用“正态分布标准差分类法”对钟萼木与杉木混交造林中钟萼木高与地径3年生长效果进行分析,结果表明该树种不同生长类型个体高与地径生长表现不同的生长适应性,树高不同生长类型权重呈近正态分布于65~450 cm区间,地径不同生长类型权重呈近正态分布于1.5~8.6 cm区间.高生长类型的84%以上个体是处于平均值与相邻两生长类型,地径生长类型的85%以上个体是处于平均值与相邻两生长类型.高与地径生长类型均出现小概率的优势个体,优势个体属于杂种优势基因型个体,依据该树种幼树高与地径生长分化分析,优势个体属于平均值加3个标准差以外的突变个体,可作为良种选择资源.以该树种高和地径生长作为选择性状,应用“t”检验选择法共筛选2株优良个体,分别命名为永钟1号和永钟2号.永钟1号和永钟2号的高与地径生长比平均值分别提高了268%,245%;269%,259%,具有很好的速生效果.永钟1号是目前幼树生长最快的优良个体,它将改写该树种的生长前期记录.The growth effect of the height and caliper of Bretschneidera sinensis Hemsl.after planting of 3-years was analyzed with“the standard deviation classification method of Gaussian distribution”in the mixed forest of Bretschneidera sinensis Hemsl.and Cunninghamia lanceolata in this paper.The results indicated that the different growth adaptation of the height and caliper for the different individuals were behaving,the different growth-types of height was distributed from 65 cm to 450 cm and the different growth-types of caliper was distributed from 1.5 cm to 8.6 cm and approximated to the Gaussian distribution.The height growth of mean and adjacent interval was over 84%in total and the caliper growth of mean and adjacent interval was over 85%in total.The growth-types of height and caliper appeared the small percentage of outstanding individual and this especial elites were known from hybridization and outstanding individual belong to mutation individuals outer the mean add 3 standard deviation and the outstanding individual may be selected as resource of superior seed.The tree height and caliper were regarded as the selection character to screen out 2 elites with“t”determination principle and these 2 elites treelets were respectively named Yong-zhong No1 and Yong-zhong No2.The height and caliper growth of 2 elite treelets comparing with average individual respectively increased 268%,245%and 269%,259%and the 2 elite treelets had fast-growing genetic-character.Yong-zhong No1 was the most fast growing elite at present and the growth record of Bretschneidera sinensis Hemsl.at earlier stage will be riwritten.

关 键 词：钟萼木 “t”检验选择法 “正态分布标准差分类法” 遗传分化 早期选择 

分 类 号：Q94-33[生物学—植物学]