11年生杉木全同胞子代林遗传效应研究

The Genetic Effect of Chinese Fir Full-sib Filial Generation at Age of 11

通过对1980年营造的11年生杉木全同胞子代林的试验研究,表明子代林在生长上存在着极显著差异。这些差异主要由遗传引起。一般配合力效应占杉木生长遗传效应的主导地位,特殊配合力占次要地位。产地杂交表现有一定的优势。不同年份间村积生长量和现实增益方面存在密切的相关关系。利用这些差异,可为建立高世代种子园选择优良亲本。

The studies showed that there were increment differences among the Chinese fir forests of full-sib filial generation; and tha differences came from genetic variation. The effect of general combining ability took main important place of full-sib filial generation in increment genetic effect, and the effect of specific combining ability the next. The hybrid of Chinese fir in provenance had a heterosis. There was a correlation between volume increment and realized genetic gain at different ages. High generation seed orchard of Chinese fir could be made by using the fine parents.