华北落叶松自由授粉家系选择研究  

Study on the Selection of Opening Pollinated Families of Larix Principis-rupprechtii Mayr

作　　者：李建平 Li Jianping(National Forest Administration Bureau of Heicha Mountain,Lanxian 035200,China)

机构地区：[1]山西省黑茶山国有林管理局,山西岚县035200

出　　处：《山西林业科技》2018年第3期44-45,共2页Shanxi Forestry Science and Technology

摘　　要：对华北落叶松自由授粉家系进行苗期试验,调查了各家系的成活率、苗高和地径生长量,并以其综合分数为聚类参数进行分析。结果表明:不同家系间苗木成活率差异较大,成活率最低的为20号,仅10%;最高的为5号,达89.1%.其它自由授粉家系的平均成活率为63%.以华北落叶松各家系成活率、苗高和地径生长量综合分数为聚类参数进行分析,初选出5个优良家系,分别为1号~5号。Seedling stage test of opening pollinated families of Larix principis-rupprechtii Mayr was carried out. The survival rate, seedling height and ground diameter growth of families were investigated, and its comprehensive scores was used as clustering parameters to analysis. Results showed that the survival rate of seedlings among different families was quite different. The survival rate of No.20 was the lowest（10%）, while the survival rate of No.5 the highest（89.1%）. The average survival rate of other opening pollinated families was 63%. 5 excellent families（No.1 ~ No.5） were selected according to the analysis with the comprehensive scores of the survival rate, seedling height and ground diameter growth of Larix principis-rupprechtii Mayr as clustering parameters.

关 键 词：华北落叶松 自由授粉家系 成活率 苗高 地径 

分 类 号：S791.24[农业科学—林木遗传育种]