不同无性系杉木球果及种子质量研究  

Study on Cone and Seed Qualities among Different Cunninghamia lanceolata Clones

作　　者：程琳[1] 陈琴[1] 陈仕昌 戴俊[1] 董利军 陈晓明[1] 谭文婧 陈代喜[1] 黄开勇[1] 李魁鹏[1] 蓝肖[1] 杨科明 Cheng Lin;Chen Qin;Chen Shichang;Dai Jun;Dong Lijun;Chen Xiaoming;Tan Wenjing;Chen Daixi;Huang Kaiyong;Li Kuipeng;Lan Xiao;Yang Keming(Guangxi Forestry Research Institute,Key Laboratory of Central South Fast-growing Timber Cultivation of National Forestry and Grassland Administration,Guangxi Key Laboratory of Superior Timber Trees Resource Cultivation,Guangxi Improved Variety Breeding Center of Cunninghamia lanceolata,Nanning,Guangxi 530002,China;State-owned Beijianghe Forest Farm,Rongshui,Guangxi 545300,China)

机构地区：[1]广西壮族自治区林业科学研究院,国家林业和草原局中南速生材繁育重点实验室,广西优良用材林资源培育重点实验室,广西杉木良种培育中心,广西南宁530002 [2]融水苗族自治县国营贝江河林场,广西融水545300

出　　处：《广西林业科学》2021年第1期1-7,共7页Guangxi Forestry Science

基　　金：广西科技重大专项(桂科AA17204087-2);广西科技基地和人才专项(桂科AD17129051);中国林业科学研究院中央级公益性科研院所基本科研业务费专项资金(CAFYBB2017ZA001-1-4);广西优良用材林资源培育重点实验室自主课题(2020-A-01-03)。

摘　　要：为掌握广西二代杉木(Cunninghamia lanceolata)种子园不同无性系种子的品质特征及遗传变异,筛选优良种质,对种子园28个无性系的球果总重、种子重、出籽率、种子千粒重、优良度、发芽率和发芽势7项指标进行分析。结果表明,28个无性系的球果总重、种子重、出籽率、种子千粒重、优良度、发芽率和发芽势均值分别为1.71 kg、0.16 kg、9.47%、7.525 g、71.57%、36.66%和11.06%;不同无性系各质量指标均存在极显著遗传差异;种子千粒重与发芽率和发芽势呈极显著正相关,与种子重和出籽率呈显著正相关;出籽率与种子重呈极显著正相关;发芽率与其他6个指标均不存在单一的正相关性。根据综合评定,筛选出10个表现优良的无性系,可作为优良的种质资源材料。In order to master seed quality characteristics and genetic differences of different clones in the second generation seed orchard of Cunninghamia lanceolata and screen out excellent germplasm materials,seven indexes such as cone weight,seed weight,seed yield,seed thousand-grain weight,excellent degree,germination rate and germination energy of 28 clones were studied and analyzed.Results showed that means of cone weight,seed weight,seed yield,seed thousand-grain weight,excellent degree,germination rate and germination energy were 1.71 kg、0.16 kg,9.47%,7.525 g,71.57%,36.66%and 11.06%,respectively.There were extremely significant genetic differences among different clones.Seed thousand-grain weight had significant positive correlation with germination rate and germination energy,and had significant positive correlation with seed yield and seed weight.Seed yield had significant positive correlation with seed weight.Germination rate had no single positive correlation with other six indexes,respectively.According to comprehensive evaluation,ten clones with excellent performance were selected,which could provide excellent materials for germplasm resources.

关 键 词：遗传育种 球果质量 种子质量 杉木无性系 

分 类 号：S791.27[农业科学—林木遗传育种]