南方农业学报2023，Vol.54Issue(8)：2379-2387,9.DOI:10.3969/j.issn.2095-1191.2023.08.019
68份澳洲坚果种质资源的表型分类研究
Phenotypic classification study of 68 macadamia germplasm resources
摘要
Abstract
[Objective]The purpose of the study was to conduct aphenotypic classification study on 68 macadamia germplasm resources with planting value,and to provide a scientific basis for systematic classification and evaluation of macadamia germplasm resources.[Method]The 64 phenotypic traits(39 descriptive traits and 25 numerical traits)of 68 macadamia germplasm resources originating from domestic and foreign countries were observed and described according to the identification and evaluation methods in Description Specification and Data Standard for Macadamia Germplasm Resources and Technical Specification of Identification for Macadamia Germplasm Resources,and cluster analysis and principal component analysis were performed based on them.[Result]Based on cluster analysis of flower phenotypic traits,68 germplasms were divided into 3 groups:type with long inflorescence and multiple flowers,hybrid type with me-dium length inflorescence and multiple flowers,and type with short inflorescence and few flowers.Based on cluster analy-sis of leaf phenotypic traits,68 germplasms were divided into 4 groups:Macadamia integrifolia with big leaf,M.integri-folia with medium leaf,M.integrifolia with small leaf,and M.integrifolia/M.tetraphylla hybrid with big leaf.Based on cluster analysis of fruit phenotypic traits,68 germplasms were divided into 4 groups:M.integrifolia with big fruit,M.in-tegrifolia with medium size of fruit,M.integrifolia with small fruit,and M.integrifolia/M.tetraphylla hybrid with big fruit.Based on cluster analysis of other phenotypic traits,68 germplasm were divided into 3 groups:type of high yield and mid-late ripening,type of medium yield and early to medium ripening,and type of low yield and early to medium ripe-ning.Based on comprehensive cluster analysis,68 germplasm were divided into 4 groups:type with big leaf,big fruit and multiple flowers,type with medium size leaf,small fruit and few flowers,type with small leaf,medium size fruit and few flowers,and hybrid with big leaf,big fruit and multiple flowers.Based on principal component analysis and two-di-mension scatter plot analysis of 64 phenotypic traits,15 main influencing factors that could systematically evaluate classi-fication of 68 germplasm phenotypic traits were selected.The 15 main influencing factors included fresh weight of single fruit with pericarp,fresh weight/dry weight of single shellfruit,leaf shape/leaf shape index,fruiting ability,flowering ability,flower quantity,flower color,maturity characteristics,leaf edge thorn density,surface texture of shellfruit,young leaf color,weight of single kernel,leaf area,leaf petiole length,and leaf inflorescence.[Conclusion]The cluste-ring analysis based on phenotypic traits such as flowers,leaves,and fruits supports the existing classification system of macadamia.The representative main influencing factors can scientifically and systematically evaluate the phenotypic clas-sification of macadamia germplasm resources.关键词
澳洲坚果/种质资源/表型性状/聚类分析/主成分分析Key words
macadamia/germplasm resources/phenotypic traits/cluster analysis/principal component analysis分类
农业科技引用本文复制引用
林玉虹,杨祥燕,蔡元保,潘如军,崔明勇,叶维雁,曾黎明,黄思婕,李冰..68份澳洲坚果种质资源的表型分类研究[J].南方农业学报,2023,54(8):2379-2387,9.基金项目
国家自然科学基金项目(31860537) （31860537）
广西科技计划项目(桂科AB19245008) （桂科AB19245008）
广西农业科学院基本科研业务专项(桂农科2021YT154) National Natural Science Foundation of China(31860537) （桂农科2021YT154）
Guangxi Science and Technology Plan Project(Guike AB19245008) （Guike AB19245008）
Basic Research Project of Guangxi Academy of Agricultural Sciences(Guinongke 2021YT154) （Guinongke 2021YT154）
