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。
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.
出处
《林业科学》
EI
CAS
CSCD
北大核心
1998年第5期45-52,共8页
Scientia Silvae Sinicae
关键词
刺槐
无性系
变异系数
自由授粉
子代测定
Robinia pseudoacacia, Family, Clone, Coefficient of variation, Absolute gain, Genetic gain
