摘要
【目的】通过对早期营建的兴安落叶松多点子代测定林进行生长性状调查和统计分析,选择出生长快、适生区广的优良家系,为本地区造林生产提供优良的造林材料,同时也为兴安落叶松二代种子园的营建提供参考和依据。【方法】通过调查树高、胸径,计算材积,对各个家系进行差异性分析和方差分析,计算遗传力和遗传增益。【结果】三个地点子代测定林的树高、胸径、材积在家系间差异均显著,树高在三个地点的家系遗传力分别为0.835、0.095、0.267;,胸径在三个地点的家系遗传力分别为0.706、0.307、0.548;材积在三个地点的家系遗传力分别为0.671、0.627、0.535。【结论】以10%的入选率,选择出5个生长快、生长量大,在三个地点适应性好、变异较小的家系,分别为:22280、12001、22674、25037、9244家系;遗传增益分别超过15.75%、10.97%和19.89%。
[Objective]By conducting growth trait surveys and statistical analyses on multi-point progeny test forests of Larix gmelinii established in the early years,we aim to select superior families with fast growth and broad adaptability,providing excellent planting materials for forestry production in the region and serving as a reference and basis for the establishment of the second-generation seed orchard of Larix gmelinii.[Methods]By surveying tree height and diameter at breast height,calculating volume,and conducting differential and variance analyses,we calculated heritability and genetic gain for each family.[Results]The tree height,diameter at breast height,and volume of the progeny test forests of each family were significantly different among families at all locations.The coefficient of variation of tree height was 11.86%-28.73%,that of diameter at breast height was 14.48%-36.26%,and that of volume was 30.53%-50.45%at the three locations.[Conclusion]By selecting the top 10%of families with fast growth and large growth volume,good adaptability,and small variation at the three locations,we selected five families with fast growth,large growth volume,and good adaptability,namely,families 22280,12001,22674,25037,and 9244.The genetic gain was over 15.75%,10.97%,and 19.89%respectively.
作者
程万才
王福德
熊欢欢
张海啸
郭琪
罗玉亮
CHENG Wancai;WANG Fude;Xiong Huanhuan;ZHANG Haixiao;GUO Qi;LUO Yuliang(Technical Promotion Station of Forest Management Department of Daxing′anling Forestry Group Company,Heilongjiang Jiagedaqi 165000;Heilongjiang Forestry Research Institute,Heilongjiang Harbin 150081)
出处
《林业科技》
2024年第4期19-22,共4页
Forestry Science & Technology
基金
林木良种培育技术成果评价、黑龙江省省属科研院所科研业务费项目:高寒区落叶松新品系选育(ZD2022-02)
关键词
优良家系
子代测定林
家系遗传力
遗传增益
excellent family
progeny assay forest
family heritability
genetic gain
