| 白皮松天然群体种实性状表型多样性研究 |
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| 引用本文： | 李斌,顾万春,卢宝明.白皮松天然群体种实性状表型多样性研究[J].生物多样性,2002,10(2):181-188. |
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| 作者姓名： | 李斌 顾万春 卢宝明 |
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| 作者单位： | 1. 中国林业科学研究院林业所,北京,100091
2. 北京市林业局种苗站,北京,100029 |
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| 基金项目： | 国家“十五”攻关项目──“林木种质保存技术创新与利用研究”（2001-13） |
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| 摘 要： | 在白皮松天然林分布区共抽取了13个群体，分别测量了5个种实性状。方差分析表明：白皮松种实性状在群体间和群体内存在广泛的变异，5个性状在群体间的F值为2.44～14.68，群体内的F值为7.48～44.53，差异均达显著或极显著水平。群体内的方差分量接近80%，是白皮松表型遗传变异的主要部分。群体间的表型分化系数VST=22.8%，与其他松类树种相比，分化水平处于中等偏上。各群体内变异系数和相对极差存在显著或极显著差异，根据二者的多重比较，可将13个群体按群体内表型变异程度分为4组。种子性状地理梯度变异明显, 呈东北—西南走向。种子3个性状（亲代）的表型变异系数与子代的2年生苗高和地径、1年生苗的全干重之间达到或接近显著相关。
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| 关 键 词： | 白皮松 天然群体 种实性状 表型多样性 |
| 文章编号： | 1005-0094(2002)02-0181-08 |
| 收稿时间： | 2001-5-16 |
| 修稿时间： | 2001-12-2 |
A study on phenotypic diversity of seeds and cones characteristics in Pinus bungeana |
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| LI Bin,GU Wan-ChunResearch Institute of Forestry,Chinese Academy of Forestry,Beijing LU Bao-MingSeed and Seedling Administration,Beijing Forestry Bureau,Beijing.A study on phenotypic diversity of seeds and cones characteristics in Pinus bungeana[J].Biodiversity Science,2002,10(2):181-188. |
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| Authors: | LI Bin GU Wan-ChunResearch Institute of Forestry Chinese Academy of Forestry Beijing LU Bao-MingSeed and Seedling Administration Beijing Forestry Bureau Beijing |
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| Affiliation: | LI Bin,GU Wan-ChunResearch Institute of Forestry,Chinese Academy of Forestry,Beijing 100091LU Bao-MingSeed and Seedling Administration,Beijing Forestry Bureau,Beijing 100029 |
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| Abstract: | Totally 13 natural populations of Pinus bungeana were collected. Five characteristics, inclu-ding seed length (SL), seed width (SW), cone length (FL), cone width (FW) and weight (WT) of1000 seeds, were measured. The variance analysis of the five characteristics showed that there were sig-nificant differences among populations with the F value from 2. 44 to 14. 68, and there were also signifi-cant differences among families within a population with the F value from 7. 48 to 44. 53. The variancefactors analysis indicated that the variation within a population was the main part of the phenotypic varia-tion in Pinus bungeana, which stood four out of totally five, but the phenotypic differentiation among pop-ulations were very obvious (VST = 22. 8% ), which meant that there was a strong adaptability to environ-ment pressure in Pinus bungeana. The variation coefficients (CV) and relative extreme value (Ri') with-in each population show similar lendency. Based on Duncans Multi-comparison analysis, all the 13 popu-lations were divided into four gr'Oups. The populations in groups A and B have higher phenotypic diversitywhile the populations in group C and group D have lower phenotypic diversity. Seed characteristics dis-play a significant ecological gradient variation. There is close relationship between phenotypic diversity ofseeds and economic characteristics of progeny. |
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