北京延庆蒙古栎天然群体种实性状变异  

Variation of seeds characters among the natural populations of Quercus mongolica in Yanqing county,Beijing

作　　者：厉月桥[1] 汪泽军 刘亚丽 冯慧[4] 杜建霞 

机构地区：[1]中国林科院亚热带林业试验中心,江西分宜336600 [2]河南省林业技术推广站 [3]河南省林业调查规划院 [4]新余学院 [5]河北省宣化县林业局

出　　处：《林业科技开发》2012年第6期24-26,共3页China Forestry Science and Technology

基　　金：科技部"生物液体燃料科技工程"(编号:NC2010MB0142);林业公益性行业专项"新型木本生物质资源培育及开发利用研究"(编号:201004001)

摘　　要：为探明北京延庆山区蒙古栎天然群落种实性状自然变异特征,对14块标准地116株蒙古栎植株种实表型性状及结实特征进行了调查分析。结果表明,蒙古栎天然群体5个种实表型性状果长、果宽、平均果径、果长/果宽和单果质量在个体间均差异极显著;可将蒙古栎天然群体植株划分为谷堆型、椭圆形、锥形、长柱形和纺锤形6个基本类型,各类型植株在群体所占比例依次为46.55%、28.45%、13.79%、6.03%和5.17%;蒙古栎天然群体结实性状中单位结实量、单位产仁率和单位淀粉产量变化幅度较大,其变异幅度分别为24.25～135.78、18.67～106.02和9.11～55.00 g/m2,三项性状指标变异系均数均约为42.0%。One hundred and sixteen trees were survyed and analysed in fourteen standard plots of natural forest of Quercus mongolica in Yanqing county,Beijing city,in order to discover the variation law of seeds characters of natural population of Quercus mongolica.The results showed that there were extremely significant differences on seeds phenotype character including seed length,seed width,seed length-width ratio and seed weight among different trees of Quercus mongolica.The trees in natural population of Quercus mongolica could be divided into 6 types,field stack,oval,cone,long column and spindle form,and their proportion were 46.55%,28.45%,13.79%,6.03% and 5.17% respectively.The range of the output was 24.25-135.78 g/m2,the kernel output was 18.67-106.02 g/m2,the starch content was 9.11-55.00 g/m2,and their variation coefficient was about 42.0% respectively.

关 键 词：蒙古栎 种实性状 表型性状 变异 

分 类 号：S792.18[农业科学—林木遗传育种]