杉木林分内优势木与平均木的遗传效应分析  

Genetic Analysis on Dominant and Mean Sample Tree in Cunninghamia lanceolata Stands

作　　者：游昌顺 程小凯 张建章 肖纪军 

机构地区：[1]浙江省龙泉市林业局,浙江龙泉323700 [2]浙江省龙泉市林业科学研究院,浙江龙泉323700

出　　处：《浙江林业科技》2013年第6期37-40,共4页Journal of Zhejiang Forestry Science and Technology

摘　　要：在3个杉木产地分别随机选择当地起源的4个林分,各林分采集1株优势木种子(C1)和5株平均木(平均木之间相距50 m以上)的混合种子(C2),共计12对24份种子,进行育苗、造林对比试验。结果表明,12个林分的优势木生长速度总平均数大于平均木总平均数;10年生胸径生长量多重比较,C1>C2达到差异显著水平;在杉木林分中按一定标准选出的林分优势木和该林分的平均木之间的生长速度差异基本上是能够遗传给F1代的;产地间的遗传方差占总遗传方差的73.9%以上,占近3/4的绝对优势,而林分间与林分内单株间的遗传方差合计只占近1/4。Four Cunninghamia lanceolata stands were randomly selected at producing areas of Guangxi,Guizhou and Zhejiang province.Seeds were collected from 1 dominant and 5 mean sample trees of each selected stands.Comparison tests were conducted on seedling cultivation and afforestation of collected seeds.The result demonstrated that mean growth rate of dominant trees was higher than that of mean sample trees of 12 tested stands.Multi-comparisons on DBH growth of 10-year trees resulted evident difference between seeds of dominant and mean sample tree.Growth rate of dominant and mean sample tree could be hereditary to their F1.Genetic variance among provenance occupied 73.9％ of the total one,the left was variance among stands and with stand.

关 键 词：杉木 林分 优势木 平均木 遗传差异 

分 类 号：S722.3[农业科学—林木遗传育种]