摘要
对湖南省黄皮树１１个种源１年生苗木４个性状组２０个性状的遗传参数及其相关选择效率作了测定和分析。其结果表明：（１）４个性状组中，１７个性状在种源间存在显著差异，其中，生产力性状组的性状表型及遗传变异系数较大，而幼苗、复叶和地上生长性状组的表型及遗传变异较小；（２）地上生长性状间、生产力性状间及其相互间具有显著的表型相关和遗传相关，这为黄皮树地上与地下、生长与生产力性状间的相关选择提供了理论依据；（３）幼苗、生长及复叶性状组的性状遗传力较高，多在０．５以上，而生产力性状的遗传力相对较低，一般在０．４以下；（４）用苗高、柄高及地径３个性状，对苗皮质量和根总质量的间接选择效率高于直接选择。其中，用苗高选择苗皮质量和根总质量的选择效率分别提高１６．１％和６２．９％；用地径选择苗皮质量和根总质量的选择效率则分别提高２４．５％和１０３．８％。苗高和地径可作为黄皮树生产力性状苗期选择的主要指标。
The genetic parameters of 20 characters were analyzed for 11 provenances of one year old Phellodendron chinense seedlings from Hunan Province,and the efficiency of correlative selection was assessed.The genetic characters are grouped into 4 types:young seedling,compound leaf,above ground growth and productivity.Analysis shows that the variations of 17 characters among different provenances are significant,and that the variations of the productivity characters are higher than those of the other 3 types of characters. The heritabilities of the young seedling,compound leaf,above ground growth generally were over 0.5, and were greater than that of productivity characters.The phenotypic and genetic correlations among the above ground growth or productivity characters ,and between them are significant,which have provided a theoretical basis for correlative selection for the production growth and productivity for P.chinense seedlings.The efficiencies of selection for the biomass of bark and roots using the seedling height increased by 16.1% and 62.9%,respectively;and the efficiencies of selection for the biomass of bark and roots using the diameter of the stem base increased by 24.5% and 103.8%,respectively.The efficiencies of selection for the biomass of seedling bark and roots using the height of seedling or the diameter of the stem base are higher than that of direction selection.
出处
《林业科学研究》
CSCD
北大核心
1999年第1期60-65,共6页
Forest Research
基金
四川省林业厅重点项目
中南林学院基金
关键词
黄皮树
种源
苗木性状
遗传参数
相关选择
Phellodendron chinense
provenance
seedling character
genetic parameter
correlative selection
selective efficiency
