银杏叶数量性状的遗传分析  

GENETIC ANALYSES OF THE QUANTITATIVE CHARACTERS IN GINKGO BILOBA L. LEAVES

作　　者：邢世岩[1] 倪国祥[1] 张运吉[1] 李廷涛 

机构地区：[1]山东农业大学,泰安271000 [2]龙口市林业局,黄城265700

出　　处：《林业科学》2000年第5期47-53,共7页Scientia Silvae Sinicae

基　　金：林业部"九.五"课题!"银杏高黄酮甙良种选育"预可行性研究的一部分

摘　　要：本文对银杏实生成龄优树叶子主要数量性状的遗传参数进行了研究。分析结果表明 ,3 0个性状指标的F检验均达显著或极显著水平。性状的遗传方差、变异系数及重复力 (R)的枝龄有关。 1年生枝段的ECV >GCV ,而 2、3年生枝段恰好相反。 2、3年生枝段叶性状的R >1年生枝段。有 1 0个指标的R大于80 %。 3个重量指标的相对遗传增益达 70 %以上。有 9对性状的遗传相关达 0 80以上。单叶面积与叶宽、单叶鲜重 ;单叶鲜重与干重 ;单叶干重与叶干重 /m·长枝相关遗传力达 70 %以上。银杏叶个体间变异较大。The \%Ginkgo\% trees have a documented history of cultivation by the Chinese for close to a thousand\|year. The China possesses more than 70% of Ginkgo resources in the world. For selecting leaf\|used cultivators, the genetic parameters of main quantitative characters of Ginkgo leaves from fine seedling adult trees were studied in this paper. The analyses results showed that F values of thirty characters indexes were significantly different at the 0.05 or 0.01 level. Variability coefficient and repeatability(R) of characters were related to branch ages. \%ECV\% was higher than \%GCV\% on one\|year\|old branch, but conversely on two or three\|year\|old branches. Repeatabilities(R) of leaves characters on two or three\|year\|old branches were more than those on one\|year\|old branches. \%R\%s of ten characters were more than 80%. The relative genetic advances (ΔG′) of leaves fresh wt./S.S. (on 2\|year\|old branch), leaves dry wt./S.S. (on 3\|year\|old branch), leaves area/S.S. and leaves fresh wt./m.L.S.(on two\|year\|old branch) were 91.6%, 80.1%, 80.0% and 75.1% respectively. The correlation anlyses showed that the genetic correlations of 34 pairs of leaves characters were significantly or more significantly different. The genetic correlations of 9 pairs of leaf characters were more than 0.80. The correlation heritabilities\$[h(x\-i,y\-j)=\%COV\%\-\{G(x\-i,y\-j)\}/σ\+2\-\{P(x\-i)\}\5σ\+2\-\{P(y\-j)\}]\$ were more than 70% between area per leaf and leaf width, area per leaf and leaf fresh wt., fresh wt. Per leaf and dry wt., dry wt. per leaf and leaves dry wt./m.long shoot. There was a great variance among individual trees on leaves characters. The direct and indirect selection on characters indexes of \%Ginkgo\% leaves were studied in this paper.

关 键 词：银杏叶 重复力 遗传相关 树叶 数量性状 

分 类 号：S792.950.4[农业科学—林木遗传育种]