JIANG Cunliang,JIA Wenwen,LI Dan,et al.Study on Fruit Phenotype Variation of Kiwifruit Variety ‘Hort-16A’[J].Northern Horticulture,2020,44(13):25-32.[doi:10.11937/bfyy.20194220]
猕猴桃品种‘Hort-16A’实生苗果实表型变异研究
- Title:
- Study on Fruit Phenotype Variation of Kiwifruit Variety ‘Hort-16A’
- 文献标志码:
- A
- 摘要:
- 以引种的11株‘Hort-16A’黄金猕猴桃和4个野生猕猴桃株群为试材,研究果实的表型性状变异及单果质量、果实硬度、可溶性固形物含量、还原糖含量、可滴定酸含量和维生素C含量的差异,并进行主成分分析,以期改良品种的栽培技术。结果表明:有果形、被毛量、果脐性状3种果实表型性状的变异;果实糖酸含量变异系数较小,维生素C含量变异系数较大,且维生素C含量与糖含量呈负相关;不同的野生型植株在不同的营养品质中其变异系数不一样。野生型猕猴桃和变异株猕猴桃在维生素C含量上有很大差异,但随果实在树上蓄留时间的延长维生素C含量均会降低,可以明显发现变异株猕猴桃的维生素C含量下降的速度比较快;野生型猕猴桃和突变型猕猴桃总酸含量变化差异较小,成熟后均随时间的延长含量下降。利用主成分分析将6个果实性状简化成相对独立的2个主要因子,这2个主成分对变异的累计贡献率可以达74.5%。第1主成分为营养品质因子,方差贡献率为54.84%,第2主成分定义为外形指标因子,方差贡献率为19.65%。
- Abstract:
- The introduced 11 ‘Hort-16A’ kiwifruit and 4 wild kiwifruit strains were used as test materials,through the phenotypic trait variation of fruit and the differences between single fruit quality,fruit hardness,soluble solids content,reducing sugar content,titratable acid content and vitamin C content were stuided,and the main component analysis was used,in order to improved the cultivation techniques of varieties.The results showed that the variation of three fruit phenotypic traits:fruit shape,coat weight and umbilical traits;the coefficient of variation of fruit sugar and acid content was small,the coefficient of variation of vitamin C content was large,and vitamin C content was negatively correlated with sugar content.Different wild-type plants had different coefficients of variation in different nutritional qualities.Wild-type kiwifruit and mutant kiwifruit had great differences in vitamin C content,but the vitamin C content would decrease with the fruit′s storage time on the tree.It could be clearly found that the vitamin C content of the mutant kiwifruit decreases faster.The difference in total acid content between wild-type kiwifruit and mutant kiwifruit was small,and the content decreased with time after maturation.Principal component analysis was used to simplify the six fruit traits into two relatively independent main factors,the cumulative contribution rate of these two principal components to the variation could reach 74.5%.The first principal component was the nutritional quality factor,and the variance contribution rate was 54.84%.The second principal component was defined as the shape index factor,and the variance contribution rate was 19.65%.
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备注/Memo
第一作者简介:姜存良(1995-),男,云南楚雄人,硕士研究生,研究方向为猕猴桃资源调查及栽培管理。E-mail:1392636397@qq.com.责任作者:王连春(1973-),男,重庆开县人,博士,副教授,硕士生导师,现主要从事经济林种质资源收集及育种等研究工作。E-mail:504769285@qq.com.基金项目:云南省农业基础研究联合专项资助项目(2018FG001-056);云南特色水果品质提升与优势品牌创建资助项目(2019ZG002)。收稿日期:2020-03-16