不同种源紫缎表型性状多样性分析与综合评价

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中图分类号：S792.36 文献标志码：A

Phenotypic diversity analysis and comprehensive evaluation of Tilia amurensisfrom differentprovenances

LIHaixia²，FYuming，Zenghua’，BHui，ing'，WANGYnmin，UOChengbo，UOing²，jie， （1.KeyLaboratoyofFastGrongT CultiatingoojiangProinc，HeiojangForestsitute，Harbi0，Hlag， China;2.NorthastFestyUiesityHarboeilogangCi;3encanStateowdForestaofaoCot ShuangyashaHelonga;4JilnoiialadeFestreesgco，）

Abstract：【Objective】Thephenotypic traitsofdiferent provenancesofTiliaamurensiswereanalyzedtoevealthepatternof variationandgeneticdiversity.【Metod】26excelentindividualplantswerecolectedfromtenprovenancesofHeilongjiang，lin andLiaoningProvince.Fourteenpheotypic traitsweredeterminedandanalyedbymutiplecomparisons，corelationanalysis，ested analysisofvariance，corelationanalysis，principalcomponentanalysisand（PCA）andclusteranalysis.【Result】Theresultsshowed that the variation coefficient of 14 phenotypic traits from1O provenances ranged from 6.68% to 43.73% .Thegenetic diversity index （H′） ranged from 1.71 to 2.03.The variation within provenances （76.86% ）was higher than that among provenances （23.14%） .Theresults of coelationaalysissoedatteraaigegeeofoelationamongleavetaitsandfowertraitsPriipalcompoetalsis showed that the cumulative contribution rate of the first five principal components reached 94.10% .The first principal component mainly reflectedtheindexesofleaves.Thesecond principalcomponent mainlyreflected theindexofbract.Thethird principalcomponent mainlyeflectedthebranchgrowthandveinindex.Thefourthandfthpricipalcomponentreflectedtheleafshapeandpedicelindex. According tothecomprehensiveevaluation model，thecomprehensiverankingofthetenprovenances fromhightolowwas Chaihe，

Lushuihe，Dongfanghong，Kuandian，Yichun，Jiaohe，Jian，RaoheandHuma.The1Oprovenancsof T. amurensis were divided into three categories bycluster analysis.【Conclusion】The variationwithin provenancesof T. amurensiswasrelatively highand wasdominant. The results provided theoretical basis for the conservation and development of T. amurensis germplasm resources. Keywords： Tilia amurensis; phenotypic traits; provenances;genetic diversity

紫椴Tiliaamurensis为椴树科椴树属落叶乔木，是我国东北林区阔叶红松林和阔叶混交林中重要的组成树种[1-2]，主要分布于中国东北三省及内蒙古东部，垂直分布在海拔 300～1000m[3] 1999年被列为国家Ⅱ级珍贵保护植物4，具有广泛的用途[5]。（剩余15676字）