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油松半同胞家系育苗试验
Experiment on Seedling Breeding of Half-sib Family of Pinus Tabulaeformis
【摘要】 通过对桥山种子园半同胞家系和双龙子代测定林中的113个家系进行苗期试验,结果表明苗高生长方差分析差异呈极显著水平。遗传分析表明,油松家系苗期遗传力较大,呈强度遗传。以20%的入选率进行选择,桥山入选优良家系16个,黄龙入选优良家系4个,双龙子代林入选家系3个,遗传增益分别达到22.77%、21.16%和22.48%,选择效果十分显著。
【Abstract】 113 families from half-sib families of qiaoshan seed orchard and shuanglong progeny test were selected for seedling breeding test.Variance analysis of height growth showed extremely significant differences.Genetic analysis showed that P.tabulaeformis family had a lardy heritability in seedling period.With 20% as a selection rate,16 elite P.tabulaeformis families in Qiaoshan seed orchard,4 families in Huanglong seed orchard and 3 families in Shuanglong seed orchard were chosen.The genetics gains were 22.77%,21.16%and22.48%,respectively.
- 【文献出处】 陕西林业科技 ,Shaanxi Forest Science and Technology , 编辑部邮箱 ,2008年04期
- 【分类号】S791.254.04
- 【被引频次】5
- 【下载频次】58