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根据对油松种子园 86个无性系生长及开花性状调查和对 119个优树家系生长性状的调查分析 ,研究了它们间的遗传差异、无性系配子贡献状况和影响因素 ,结果表明 :主干径生长、针叶长度、密度和花量在无性系间有显著遗传差异 ,花量与其它性状无显著相关关系 ,针叶密度与主干径生长相关密切 ;无性系间的树高生长育种值有显著遗传差异 ;无性系间的开花同步性、无性系的配子贡献和遗传贡献均有较大变异 ,遗传贡献对种子园子代的遗传品质有直接影响 .并探讨了种子园相应的经营策略 .
Based on the investigation of the growth and flowering of 86 clones of Pinus tabulaeformis seedlings and the investigation of the growth traits of 119 elite tree families, the genetic differences among them, the contribution status of clones and their influencing factors were studied. The results showed that the trunk diameter There was a significant genetic difference in growth, needle length, density and flowering among clones, with no significant correlation between flower number and other traits. The density of needles was closely related to the growth of trunk diameter. The height growth and breeding value of clones was significant Genetic differences, the syzygistic of flowering among clones, the gamete contribution and the genetic contribution of clones have significant variation, and the genetic contribution has a direct impact on the genetic quality of the progeny of the seed orchard and the corresponding business strategy of the seed orchard.