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作 者:王艳妮 李芳 廖绍明 刘永红[2] WANG Yan-ni;LI Fang;LIAO Shao-ming;LIU Yong-hong(Houzhenzi Forestry Farm of Zhouzhi County,Zhouzhi,Shaanxi 710409;College of Forestry,Northwest A&F University,Yangling,Shaanxi 712100)
机构地区:[1]周至县厚畛子生态实验林场,陕西周至710409 [2]西北农林科技大学林学院,陕西杨凌712100
出 处:《陕西林业科技》2023年第4期20-24,共5页Shaanxi Forest Science and Technology
基 金:周至县厚畛子国有生态实验林场国家落叶松、油松良种基地建设项目。
摘 要:该文以油松29个优树材料和其子代测定材料为研究对象,对油松优树的选优因子,包括树高、胸径和材积生长量大于优势对比木的百分比优树年生长量,与洛南、黄陵两个试点的子代测定林的生长因子的相关关系进行研究,并对子代林的生长性状进行遗传变异分析。结果表明:生长量大于优势对比木的百分比与洛南子代生长因子和黄陵子代材积性状无显著相关,与黄陵子代树高、胸径相关紧密;优树树高和材积年生长量与子代材积和胸径生长量相关显著。典型相关分析表明,生长量大于优势对比木的百分比对子代生长因子无显著相关作用,而优树生长因子中树高年生长量对子代胸径和材积起主要作用。按照5株优势木对比法选优测定结果,80%以上家系均大于对照,表明选优效果较好。With 29 superior tree materials of Pinus tabulaeformis and their progeny testing materials as the research object,the selection factors of superior trees of Pinus tabulaeformis,including the percentage of tree height,DBH,and volume growth that are greater than the dominant contrast trees,and the correlation between the annual growth of superior trees and the growth factors of the progeny testing forests in Luonan and Huangling were studied.The genetic variation analysis of the growth traits of the progeny forest is also conducted.The results showed that supeiror tree selection factors were not closely correlated with growth factors of progeny in Lounan and volume of progeny in Huangling.There were highly correlated with the height and DBH of progeny in Huangling.The height and the volume of superior trees are highly correlated with the volume and the DBH of progeny.Canonical correlation analysis indicated that the growth percentage over the control tree has no significant influence on growth factors of progeny,and per year growth of height of superior trees has significant influence on the DBH and the volume of progeny.According to the results of the comparative method of selecting 5 dominant trees,more than 80%of the families are greater than the control,indicating that the selection effect is good.
分 类 号:S791.254[农业科学—林木遗传育种]
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