枫杨散生木优树选择研究  

Plus Scattered Trees Selection of Pterocarya stenoptera

作　　者：王晓荣[1] 胡兴宜[1] 杜克兵[2] 付甜[1] 庞宏东[1] 胡文杰[1] 

机构地区：[1]湖北省林业科学研究院,武汉430075 [2]华中农业大学园艺林学学院,武汉430070

出　　处：《中国农学通报》2016年第22期15-20,共6页Chinese Agricultural Science Bulletin

基　　金：湖北省公益性科技研究项目"优良乡土树种枫杨枫香等种质资源收集评价与高效栽培研究"(2013BBB11);国家科技支撑计划课题"生态经济型血防林构建技术研究与示范"(2015BAD07B07)

摘　　要：研究旨在有效利用枫杨优良遗传资源,建立枫杨散生木优树选择的方法体系,以期为挖掘枫杨遗传改良和开发利用提供科学依据。在野外广泛调查的基础上,建立江汉平原枫杨散生木年龄与胸径的回归方程为Y=0.737X+10.277。以初步选出的24株候选优树为对象,采用主成分分析法对年均生长量、高径比、枝下高、冠幅、冠径比、分枝角、树皮厚度和最粗分枝制定各性状的权重。结合初选优树的数量指标和形质指标,利用综合评分法评选出枫杨散生木优树6株,入选率为25%。建立的综合评分法为枫杨散生木优树选择提供科学方法。This research aimed at an effective utilization of Pterocarya stenoptera excellent genetic resources,methodological system of plus scattered trees selection of Pterocarya stenoptera was established in order toprovide a scientific basis for genetic improvement and exploitation and utilization of this species. On the basisof extensive field investigation, a regression equation between tree age and diameter at breast height of Pterocarya stenoptera in Jianghan plain was established as Y=0.737 X ＋ 10.277. 24 candidate plus scatteredtrees of Pterocarya stenoptera were used as the research object, the weight value of annual average growth, ratioof height to diameter, height under branch, crown, ratio of crown to diameter, branching angle, bark thicknessand the thickest branches were determined using principal component analysis. Combined with quantitativeindicators and form quality index of primary plus scattered trees, 6 plus scattered trees were selected by thecomprehensive scoring method, and the selection rate was 25%. The comprehensive scoring method provides ascientific method for plus scattered trees selection.

关 键 词：枫杨 散生木 优树选择 回归方程拟合 综合评分法 

分 类 号：S722.3[农业科学—林木遗传育种]