不同種源紫緞表型性狀多樣性分析與綜合評價

打開文本圖片集

中圖分類號：S792.36 文獻標志碼：A

Phenotypic diversity analysis and comprehensive evaluation of Tilia amurensisfrom differentprovenances

LIHaixia2，F(xiàn)Yuming，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為椴樹科椴樹屬落葉喬木，是我國東北林區(qū)闊葉紅松林和闊葉混交林中重要的組成樹種[1-2]，主要分布于中國東北三省及內(nèi)蒙古東部，垂直分布在海拔 300～1000m[3] 1999年被列為國家Ⅱ級珍貴保護植物4，具有廣泛的用途[5]。（剩余15676字）