摘要
为筛选耐盐碱白榆家系,以2批白榆家系苗木为材料,分析了有效的耐盐碱评价指标和指标间的相关性,用主成分分析对家系耐盐碱性做了分类。结果表明:检测指标间多存在显著相关;基于苗木有效指标平均值和最高质量浓度胁迫值的主成分分析,分别需提取2和3个主成分,说明以平均值统计,指标间的关联更紧密;以平均值和最高质量浓度胁迫值统计,白城家系试验苗耐盐碱能力由高到低为B2、B7、B3、B5、B6、B4、B8、B1和B2、B7、B3、B5、B6、B4、B1、B8;济源家系试验苗由高到低为J9J、3J、2J、6J、8J、4J、7J、1J、5和J9J、2J、8J、4J、1J、6J、3J、7J、5;综合分析平均值和最高质量浓度胁迫值的统计结果,家系B2、B7、B3J、9J、2较耐盐碱,家系B4、B1、B8J、7J、5对盐碱胁迫敏感,其余家系介于两者之间。从研究结果可知,用主成分分析法评价白榆家系耐盐碱能力是有效和可靠的。
The effective evaluation indices of saline-alkali tolerance and the correlation between the resistance indices were analyzed in order to select seedlings with saline-alkali tolerance from two families of Ulmus pumila.The saline-alkali tolerance of different U.pumila families was classified by the principal component analysis.Results showed that there were significant correlations among the resistance indices.Two and three principal components were extracted respectively based on the principal component analysis on the average value of effective index and the stress value of the highest concentration.It indicated that the correlation between the resistance indices was closer in terms of the average value.The saline-alkali tolerance of Baicheng families was B2B7B3B5B6B4B8B1 or B2B7B3B5B6B4B1B8,and that of Jiyuan families was J9J3J2J6J8J4J7J1J5 and J9J2J8J4J1J6J3J7J5 in terms of the average value and the stress value of the highest concentration,respectively.The families of B2,B7,B3,J9 and J2 had higher saline-alkali tolerances,while the families of B4,B1,B8,J7 and J5 were sensitive to alkaline-salt stress,and other families were at moderate levels according to the comprehensive analysis of the average value of effective index and the stress value of the highest concentration.It is effective and credible to evaluate saline-alkali tolerances of U.pumila families by the principal component analysis method.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
2011年第3期8-11,共4页
Journal of Northeast Forestry University
基金
"十一五"国家科技支撑计划项目(2006BAD030103)
关键词
白榆
家系
主成分分析
耐盐碱评价
Ulmus pumila
Families
Principal component analysis
Saline-alkali tolerances
作者简介
第一作者简介：李庆贱，男，1983年11月生，林木花卉遗传育种敏育部重点实验室（北京林业大学），硕士研究生。
通信作者：李悦，林木花卉遗传育种教育部重点实验窀（北京林业大学），教授。E-mail：liyue@bjfu．edu．cn。
