| 油松天然群体种实性状表型多样性分析 |
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| 引用本文： | 刘永红,高桂琴,崔嵬,程春红,杨培华,樊军锋.油松天然群体种实性状表型多样性分析[J].种子,2010,29(9). |
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| 作者姓名： | 刘永红 高桂琴 崔嵬 程春红 杨培华 樊军锋 |
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| 作者单位： | 西北农林科技大学林学院; |
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| 基金项目： | 西北农林科技大学大学生创新试验项目，国家林业局林业公益专项项目 |
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| 摘 要： | 在油松天然林分布区共抽取了10个群体,分别测量了8个种实性状。方差分析表明:油松种实性状在群体间和群体内存在广泛的变异,8个性状在群体间和群体内差异均达极显著水平。表型分化系数即群体间的变异为51.86%,大于群体内变异(48.14%),是油松表型遗传变异的主要部分。球果长、球果径、球果形状指数、种子长、种子宽、种子厚、种子形状指数和千粒重的变异系数分别为:12.87%、12.43%、11.19%、13.97%、16.92%、18.8%、11.53%和32.50%。利用群体间欧氏距离进行UPGMA表型性状的聚类分析,可将油松10个天然群体划分为5类。相关分析表明,油松球果长和果径相关紧密,种长、种宽和千粒重两两相关显著。种形指数与纬度、海拔和生态梯度值(EGA)呈显著负相关,与年均温、年降水量和生长期呈显著正相关。
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| 关 键 词： | 油松 天然群体 种实性状 地理变异 表型多样性 |
Study on Phenotypic Diversity of Seeds and Cones Characteristics in Pinus tabuleaformis Carr |
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| LIU Yong-hong,GAO Gui-qin,CUI Wei,CHENG Chun-hong,YANG Pei-hua,FAN Jun-feng.Study on Phenotypic Diversity of Seeds and Cones Characteristics in Pinus tabuleaformis Carr[J].Seed,2010,29(9). |
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| Authors: | LIU Yong-hong GAO Gui-qin CUI Wei CHENG Chun-hong YANG Pei-hua FAN Jun-feng |
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| Institution: | LIU Yong-hong,GAO Gui-qin,CUI Wei,CHENG Chun-hong,YANG Pei-hua,FAN Jun-feng(College of Forestry,Northwest A & F University,Yangling Shaanxi 712100,China) |
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| Abstract: | Totally 10 natural population of Pinus tabuleaformis Carr.were collected.Eight characteristics,in cluding seed length(SL),seed width(SW),seed hight (SH)cone length(CL),cone width(CW ),weight(TGW) of 1000 seeds were measured.The variance analysis of the five characteristics showed that there were signifcant differences among populations and among families within a population.The variation among populations,that is the mean phenotypic differentiation coefficient was 51.86% and bigger than that within populati... |
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| Keywords: | Pinus tabuleaformis Carr natural population cone and seed traits geographic variation phenotypic diversity |
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