西南桦优良无性系选育研究  

Breeding on Superior Clones of Betula alnoides

作　　者：徐明艳 聂艳丽 邓桂香 唐红燕 Xu Mingyan;Nie Yanli;Deng Guixiang;Tang Hongyan(General Station of Forest Seeds and Seedling in Yunnan Province,Kunming Yunnan 650215,China;General Station of Forestry and Grassland Technology Extension in Yunnan Province,Kunming Yunnan 650224,China;Institute of Forestry and Grassland Science in Pu'er City,Pu'er Yunnan 665099,China)

机构地区：[1]云南省林木种苗工作总站,云南昆明650215 [2]云南省林业和草原技术推广总站,云南昆明650224 [3]普洱市林业和草原科学研究所,云南昆明665099

出　　处：《西南林业大学学报（自然科学）》2022年第2期163-167,共5页Journal of Southwest Forestry University：Natural Sciences

基　　金：云南省科技计划重点新产品项目(2014BB010)资助;中央财政资金跨区域重点类项目([2013]TK79)资助;云南省技术创新人才项目(2020CX06)资助;省级标准化项目资助。

摘　　要：通过对14株西南桦初选优良单株半同胞子代3月龄苗进行超级苗选择,采用组织培养的方式进行超级苗无性繁育,并在双江县和思茅区营建无性系测试林。并对双江县8年生测试林和思茅区9年生测试林生长性状进行测定,分析了其遗传增益。结果表明:双江县不同无性系间的树高和胸径差异均极显著,1号无性系和4号无性系的树高与对照差异极显著,1号无性系、2号无性系、4号无性系胸径与对照差异极显著;思茅区不同无性系间的树高差异极显著,1号无性系、3号无性系、4号无性系的胸径与对照差异显著。综合双江县和思茅区西南桦无性系测试林的树高和胸径的分析结果,决选出西南桦1号无性系和4号无性系,即林推1号西南桦优良无性系和林推4号西南桦优良无性系,该2个无性系具有速生丰产性、干型通直、顶端优势明显、抗性好等优良性状。Super-seedlings were selected from 3-month-old seedlings of 14 superior individual half-sib progenies of Betula alnoides,and were cloned by tissue culture.Clonal test forests were built respectively in Shuangjiang County and Simao Distric,and the 8-year-old clonal test forest in Shuangjiang County and the 9-year-old in Pu'er District were measured and the genetic gain was analyzed.The results showed that there were significant differences in tree height and DBH among different clones in Shuangjiang County.The tree height of clone 1 and clone 4 was significantly different from that of the control,and the DBH of clone 1,clone 2 and clone 4 were significantly different from the control.Moreover,the tree height difference among different clones in Simao District was very significant,and the DBH of clone 1,clone 3 and clone 4 were significantly different from the control.The tree height and DBH of clonal test forest of B.alnoides in these 2 sites were comprehensively analyzed,and clones 1 and 4 of B.alnoides were selected,which were also called Lintui Superior Clone 1 and 4 of B.alnoides with excellent characters with fast-growing,high-yield,straight stem type,obvious apical advantage and good resistance.

关 键 词：西南桦 无性系 优良性状 遗传增益 选育 

分 类 号：S792.15[农业科学—林木遗传育种]