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作 者 ：朱延林 董铁民 田野 佟超然

期 刊 ：林业科学 1998年 34卷 5期 页码：45-52

关键词：刺槐；家系；无性系；变异系数；绝对增益；遗传增益；

Keywords:Robinia pseudoacacia, Family, Clone, Coefficient of variation, Absolute gain, Genetic gain,

摘 要 ：用同一批优树繁殖成无性系和实生家系子代分别建立遗传测验林,12年生时进行树高、胸径、主干高、单株材积4个性状测定,计算它们的变异系数,并进行各自优良无性系或家系的选择,最后比较两种选择策略的遗传进度、遗传增益。结果表明无性系间的表型变异系数比家系间大76%以上,遗传变异系数大70%以上,按20%的入选率,入选无性系的遗传增益比入选的家系高128%以上,因而对刺槐改良采用优树无性系选择的效果比实行有性繁殖的种子园好。

Abstract:Testing plantations were planted with clonal and seed progeny in 1983. Both of them are from the same plus trees. When the testing plantations were 12-year-old, the plantations height、diameter at breast height、height of trunk and volume have been tested. The result shows: 1.The coefficient of phenotypic variation of the clone is 76% greater than that of the family. The coefficient of genetic variation of the clone is 70% greater than that of the family; 2. According to being chosen of 20%, the genetic gain of clone is 128% higher than that of family. So the effect of plus tree clonal selection is better than that of plus tree family selection.

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