不同结实量的杉木种子发芽率与种实性状相关性及通径分析  

Correlation and Path Analysis between Seed Germination Rate and Seed Characters of Cunninghamia lanceolata with Different Seed Yield

作　　者：韩净 叶腾云 叶代全 王子墨 陈明星 李文芳 周坚[1,2] HAN Jing;YE Tengyun;YE Daiquan;WANG Zimo;CHEN Mingxing;LI Wenfang;ZHOU Jian(Co-Innovation Center for Sustainable Forestry in Southern China,Nanjing Forestry University,Nanjing 210037,China;College of Biology and the Environment,Nanjing Forestry University,Nanjing 210037,China;Yangkou State Forest Farm,Shunchang Fujian 353211,China;Jian'ou Forestry Bureau,Jian'ou Fujian 353100,China)

机构地区：[1]南京林业大学南方现代林业协同创新中心,南京210037 [2]南京林业大学生物与环境学院,南京210037 [3]福建省洋口国有林场,福建顺昌353211 [4]建瓯市林业局,福建建瓯353100

出　　处：《种子》2023年第7期72-76,95,共6页Seed

基　　金：国家自然科学基金面上项目(32171818);“十四五”国家重点研发计划课题(2022YFD2200201);福建省林业科技项目(2022FKJ05);福建省林木种苗科技攻关项目(ZMGG-0701);江苏省高校优势学科建设工程资助项目(PAPD)。

摘　　要：本研究以福建省洋口林场结实量少、结实量中等和结实量多的3个杉木无性系为研究对象,通过观测种子表型性状、发芽特性、优良度性状及产量相关性状等12个品质指标,采用相关分析、逐步回归分析和通径分析,探寻影响杉木种子发芽率的主要因素。结果表明,发芽率与种实大部分性状呈显著(p<0.05)或者极显著(p<0.01)相关;方位、种子长、种子宽、种形指数和优良度是影响杉木种子发芽率的主要因子;优良度是影响杉木种子发芽率的主要决定因子,而种子长是主要限定因子。因此,提高优良度并且限制种子长是提高杉木种子品质的最佳途径。In this study,three Cunninghamia lanceolata clones with low,medium and high cone yield in Yangkou Forest Farm of Fujian Province were used as research object.By observing 12 quality traits such as seed phenotypic status,seed germination characteristics,seed excellence traits and yield correlation,correlation analysis,stepwise regression analysis and path analysis were used to find out the main factors affecting the seed germination rate of Cunninghamia lanceolata seeds.The results showed that:there was a significant(p<0.05)or very significant(p<0.01)correlation between germination rate and most of the characters of seeds.Aspect,seed length,seed width,seed shape index and excellent degree were the main factors affecting the seed germination rate of Cunninghamia lanceolata seeds.Excellence degree was the main determining factor affecting the seed germination rate of Cunninghamia lanceolata seeds,while seed length was the main limiting factor.Therefore,improving the excellent degree and limiting the seed length were the best ways to improve the quality of Cunninghamia lanceolata seeds.

关 键 词：杉木发芽率 相关分析 逐步回归 通径分析 决策系数 

分 类 号：S791.27[农业科学—林木遗传育种]