【摘要】 利用杉木11个亲本进行双列交配设计(含自交和反交),结果表明,对于8年生树木的树高、胸径、材积和木材比重这四个性状,都显示出近乎一致的遗传控制模式。一般配合力效应和母本效应十分显著,而特殊配合力效应、父本效应、特殊正反交效应则可以忽略。说明这些性状存在显著的加性遗传变异,同时也涉及显著的母体和(或)细胞质遗传现象。材积与木材比重之间未见有明显的遗传相关性存在。并就双列交配设计的分析模型以及配合力效应问题进行了讨论。更多还原

【Abstract】 A diallel cross, including selfs and reciprocals, of eleven Chinese Fir (Cunninghamia lanceolata) parents was analyzed. Analysis of eight-year data revealed that there is a similar genetic variation model for height (HT), diameter at breast height (DBH), volumn (VOL), and wood specific gravity (SG). Significant general combining ability as well as maternal effects were obtained. But specific combining ability, male effects, specific reciprocal effects seem to be negligible. These results suggested that besides significant additive genetic variance, there exist significant cytoplasm inheritance phenomenon. No significant genetic correlation between VOL and SG was obtained. Discussions on the analysis models of diallel and combining ability effects were made.更多还原