黑木相思半同胞子代家系苗期性状的遗传分析  

Genetic Analysis for Seedling Traits of Half-sib Progeny in Acacia melanoxylon

作　　者：李安琪 严春晓 连勇机 蔡纯纯 翁斌 何士宾 丁国昌[1] 李煜 Li Anqi;Yan Chunxiao;Lian Yongji;Cai Chunchun;Weng Bin;He Shibin;Ding Guochang;Li Yu(College of Forestry,Fujian Agriculture and Forestry University,Fuzhou Fujian 350002,China;Luoxi State-owned Forest Farm in Quanzhou,Quanzhou Fujian 362015,China;Zhongxi State-owned Forest Farm in Zhangpu,Zhangpu Fujian 363200,China)

机构地区：[1]福建农林大学林学院,福建福州350002 [2]福建省泉州罗溪国有林场,福建泉州362015 [3]福建省漳浦中西国有林场,福建漳浦363200

出　　处：《西南林业大学学报（自然科学）》2023年第2期9-16,共8页Journal of Southwest Forestry University：Natural Sciences

基　　金：福建省林木种苗科技攻关六期项目(19001A)资助;福建农林大学科技创新项目(KFA19084A)资助。

摘　　要：以30个黑木相思家系的半同胞子代为研究对象,根据苗期性状测定结果估算苗高、地径、叶面积、叶长、叶宽、叶长宽比的变异系数,进行遗传分析,筛选出优良家系和优良单株。结果表明:黑木相思半同胞子代6个苗期性状中,地径的变异系数最大,苗高的变异系数最小,30个家系遗传多样性较高,选育潜力较大;在家系间和家系内均存在极显著差异;苗高的家系遗传力为0.986,单株遗传力为0.818,地径的家系遗传力为0.920,单株遗传力为0.560,受较高遗传力控制;苗高和地径的相关性最大。对30个黑木相思半同胞子代群体进行优良家系和优良单株的选择,选择出3个优良家系、12个优良单株。Thirty half-sib progenies of Acacia melanoxylon were studied,the coefficients of variation of seedling height(H),ground diameter(D),leaf area(S),leaf length(LL),leaf width(WL)and leaf length width ratio(LL/WL)were estimated,and genetic analysis was carried out.Excellent families and individual trees were selected.The results showed that among 6 seedling traits in half-sib offspring,the maximum coefficient of variation is ground diameter,and the minimum is seedling height.The genetic diversity among 30 families was high and the breeding potential was great;there were significant differences among and within families;the family heritability of seedling height was 0.986,and the individual heritability was 0.818.The family heritability of ground diameter was 0.920,and the individual heritability was 0.560,which was controlled by higher heritability;the correlation between seedling height and ground diameter was the largest.Thirty half-sib progeny populations were selected for excellent families and excellent trees,and 3 excellent families and 12 individual trees were selected.

关 键 词：黑木相思 半同胞子代 苗期性状 遗传分析 优良单株 

分 类 号：S603[农业科学—园艺学]