华山松第一代无性系种子园种源研究  

Provenances of First Generation Clonal Seed Orchard of Pinus armandi Franch.

作　　者：冯峻 董云祥 罗正平 潘涌智[3] 伍健榕 许玉兰[4] 吴利华[5] FENG Jun;DONG Yun-xiang;LUO Zheng-ping;PAN Yong-zhi;WU Jian-rong;XU Yu-lan;WU Li-hua(Yunnan Provincial Forest Seedling Work Station,Yunnan Kunming 650215,China;Chuxiong Forestry and Grassland Bureau,Yunnan Chuxiong 675000,China;Key Laboratory of Forest Disaster Early Warning and Control of Yunnan Province,Southwest Forestry University,Yunnan Kunming 650224,China;Key Laboratory of Ministry of Education for Mountain Forest Resources Conservation and Utilization in Southwest China,Southwest Forestry University,Yunnan Kunming 650224,China;School of Geography and Ecotourism,Southwest Forestry University,Yunnan Kunming 650224,China)

机构地区：[1]云南省林木种苗工作总站,云南昆明650215 [2]楚雄市林业和草原局,云南楚雄675000 [3]西南林业大学云南省森林灾害预警与控制重点实验室,云南昆明650224 [4]西南林业大学西南山地森林资源保育与利用教育部重点实验室,云南昆明650224 [5]西南林业大学地理与生态旅游学院,云南昆明650224

出　　处：《西南农业学报》2021年第3期626-632,共7页Southwest China Journal of Agricultural Sciences

基　　金：楚雄市紫溪山国家华山松良种基地良种补助项目(云林函[2018]312号,楚林复[2018]41号)。

摘　　要：【目的】为华山松第一代无性系种子园遗传改良提供优良种质材料和理论依据。【方法】以华山松第一代无性系种子园6个建园种源为研究对象,采用方差分析、变异分析、多重比较、相关分析和综合评价等分析方法,对5个表型性状(树高、胸径、材积、冠幅和结实球果)进行研究,探讨种源间和种源内的差异特征和变异规律。【结果】华山松第一代无性系种子园各表型性状在种源间和种源内均呈显著或极显著差异,种源间差异大于种源内差异;各表型性状在种源间和种源内有较丰富和多样的变异,种源内变异(13.56%)大于种源间变异(1.75%),种源间的平均分化系数为10.89%;种源内变异是华山松种子园主要变异来源。在5个表型性状中结实球果的变异系数最大(130.45%),冠幅的变异系数最小(22.29%);宜良种源性状变异系数值最大(58.64%),南华种源性状变异系数值最小(42.92%);各种源的树高与原产地纬度呈显著正相关,胸径、材积、冠幅和结实球果与原产地纬度呈极显著的正相关;材积与树高、胸径、冠幅和结实球果呈极显著正相关关系,结实球果数与树高、胸径、材积和冠幅呈极显著正相关关系;经多重比较和综合评价,初步认定南华种源为本种子园内最优种源。【结论】华山松第一代无性系种子园生长和结实情况良好,各性状的重复力较高,遗传改良潜力大;通过建设遗传测定林,对种子园种源、无性系和单株进一步开展多层次再选择,稳步推进高世代种子园建设,可实现种子园高产、优质、高效的目标。【Objective】The purpose of this study is to provide excellent germplasm materials and theoretical basis for the genetic improvement of the first generation clonal seed orchard of Pinus armandi Franch.【Method】Taking the six provenances of the first generation clonal seed orchard of Pinus armandi Franch.as the research objects,five phenotypic traits(tree height,tree diameter at breast height(abbreviated as DBH),volume,crown width and fruit cones)were studied by using the methods of variance analysis,variation analysis,multiple comparison,correlation analysis and comprehensive evaluation in order to explore the difference features and variation characteristics between and within these provenances of Pinus armandi Franch.【Result】There were significant or extremely significant differences between and within these provenances for these phenotypic traits of the first generation clonal seed orchard of Pinus armandi Franch.The differences between the provenances were greater than those within the provenances.There were rich and diverse variations between and within these provenances for these phenotypic traits.The coefficient of variation within the provenances(13.56%)was greater than the coefficient of variation between the provenances(1.75%).And the average differentiation coefficient between the provenances was 10.89%.The variation within the provenances was the main source of variation in the seed orchard of Pinus armandi Franch.Among the five phenotypic traits,the coefficient of variation of the fruit cones was the largest(130.45%),and the coefficient of variation of the crown width was the smallest(22.29%).The coefficient of variation of the provenance traits was the highest(58.64%)from Yiliang,and the coefficient of variation of the provenance traits was the smallest(42.92%)from Nanhua.There was a significanly positive correlation between the tree heights of the provenances and the latitudes of origin places.And the tree diameter at breast height,volumes,crown widths and fruit cones were extremely signif

关 键 词：华山松 种子园 种源 差异和变异 分析 

分 类 号：S791[农业科学—林木遗传育种]