摘要
为选育卷荚相思(Acacia cincinnata)优良无性系,以7 a生卷荚相思无性系测定林15个无性系为材料,通过方差分析、遗传参数估算、相关性分析、通径分析和综合评价等方法,分析卷荚相思无性系主要性状的遗传变异和性状相关性。结果表明,卷荚相思的树高、胸径、材积和枝下高在无性系间存在极显著差异,其重复力分别为0.71、0.64、0.42和0.49。性状相关分析中,树高和材积与各性状均呈极显著相关;胸径只与干形呈显著相关,与其他性状呈极显著相关;冠幅与枝下高呈负相关,与干形呈正相关。通径分析表明,胸径对材积的贡献作用最大,其次为树高和冠幅,三者的直接通径系数分别为0.5665、0.3899和0.1728,总效应值分别为0.9047、0.8258和0.8779。利用布雷金多性状综合评价法,以20%的入选率进行选择,入选无性系为SS2、SS3和ZJ22,可考虑作为综合改良的卷荚相思无性系在当地推广。
In order to breeding superior clones of Acacia cincinnata,the genetic variation and trait correlation of main traits of 15 clones at 7 year old were analyzed by variance analysis,genetic parameter estimation,correlation analysis,path analysis and comprehensive evaluation.The results showed that there were significant differences in tree height,DBH,volume and height under branches among clones,and their repeatability was 0.71,0.64,0.42 and 0.49,respectively.Tree height and volume were significantly correlated with other traits.The DBH was significantly correlated with stem shape at 0.05 level,but with other traits at 0.01 level.The crown width was negatively correlated with height under branches and positively correlated with stem shape.The path analysis showed that DBH had the greatest contribution to single tree volume,followed by tree height and crown width,and their direct path coefficients of DBH were 0.5665,0.3899 and 0.1728,respectively,and the total effect values were 0.9047,0.8258 and 0.8779,respectively.The selected clones were SS2,SS3 and ZJ22 with the selection rate of 20%by using Breggin’s multi-character comprehensive evaluation method,which could be considered as the comprehensive improved A.acacia clones for local promotion.
作者
陈启华
郑莹莹
陈留犇
张波
何士宾
丁国昌
阮少宁
CHEN Qihua;ZHENG Yingying;Chen Liuben;ZHANG Bo;HE Shibin;DING Guochang;RUAN Shaoning(College of Forestry,Fujian Agriculture and Forestry University,Fuzhou 350002,China;College of Landscape Architecture and Art,Fujian Agriculture and Forestry University,Fuzhou 350002,China;Zhangpu Zhongxi State-owned Forest Farm in Fujian Province,Zhangzhou 363400,Fujian,China)
出处
《热带亚热带植物学报》
北大核心
2025年第2期213-219,共7页
Journal of Tropical and Subtropical Botany
基金
福建省林业科技项目(2024FKJ29)
福建省林木种苗科技攻关项目(ZMGG-0709)
福建农林大学科技创新项目(KFB23060A)资助。
