摘要
【目的】通过对青皮红心柚果实农艺性状的分析研究,筛选出优异种质,为青皮红心柚种质资源评价、品种选育及创新利用提供材料基础和理论依据。【方法】对47份青皮红心柚种质果实的单果质量、挂果数、单株产量、纵径、横径、果形指数等12个农艺性状进行遗传变异性分析、相关性分析、主成分分析和聚类分析以及优异种质筛选。【结果】47份种质具有丰富的遗传多样性;部分性状间存在相关性;主成分分析可将12个性状归为4个主成分,累计贡献率为73.733%,分别反映青皮红心柚的果实大小、产量性状、外观性状和果形特征;聚类分析可将47个种质分为5个类群。根据对果实农艺性状综合分析,初步筛选出14份优异种质,其中312表现最好,其次是518、420和421。【结论】初步判定了青皮红心柚不同品种果实农艺性状的差异,可为品种选育和生产利用提供参考。
【Objective】As the fruit characteristics of germplasm resources are diversified, the specific germplasm could be screened out through analyzing of and studying on the fruit traits, which can provide the practical and theoretical basis for evaluation, preservation, variety selection and innovative utilization of pomelos with green skin and red pulp.【Methods】In this study, genetic variability, correlation analysis, principal component analysis and cluster analysis were applied to analyze 12 agronomic traits, such as fruit weight, fruit number, yield of single plant, longitudinal diameter, transverse diameter, fruit shape index, etc, of 47 pomelo germplasm resources. And the excellent germplasm was selected out according to the analysis.【Results】47 pomelo germplasms showed rich genetic diversity, the variation coefficients showed in a descending order: yield of single plant(74.32%), fruit number(73.24%), red flesh(37.49%), fruit surface green(33.43%), seed number(27.52%), thickness of pericarp(20.95%), fruit weight(19.97%), and number of capsule(10.74%). In correlation analysis, it was showed that there was no significant correlation between number of capsule and seed and other traits,but other traits had mutual influence. It meant that the number of capsule and seed was not representative in variety breeding of pomelo germplasm resources with green skin and red pulp, and the traits such as fruit weight, fruit number, yield of single plant and longitudinal diameter should be considered comprehensively. There were extremely significant correlations between the following traits, for example, fruit weight and longitudinal diameter, widest and transverse diameter;widest and transverse diameter, thickness of pericarp and fruit surface green;thickness of pericarp and fruit surface green color, red flesh and fruit surface green color(p<0.01). And the yield per single plant was negatively correlated with thickness of pericarp(p<0.05). 12 characteristics were classified into 4 principal components with characteris
作者
赵东兴
岳建伟
赵志昆
杨永智
陈林杨
陈鸿洁
李春
张荣琴
毕光林
ZHAO Dongxing;YUE Jianwei;ZHAO Zhikun;YANG Yongzhi;CHEN Linyang;CHEN Hongjie;LI Chun;ZHANG Rongqin;BI Guanglin(Honghe Institute of Tropical Agriculture of Yunnan,Hekou 661399,Yunnan,China)
出处
《果树学报》
CAS
CSCD
北大核心
2022年第9期1553-1561,共9页
Journal of Fruit Science
基金
云南省科技计划项目(2016DC027)。
关键词
青皮红心柚
果实
农艺性状
综合分析
种质筛选
Pomelo with green skin and red pulp
Fruit
Agronomic traits
Comprehensive analysis
Excellent germplasm screening
