Evaluation on the adaptability of seven Actinidia arguta varieties in hills of Hunan province
[Objective]To observe the phenological phase and fruit quality of different Actinidia arguta varieties in Hunan,and to screen the suitable varieties in hills of Hunan province.[Method]The introduced kiwifruit varieties'Purpurna Saduw''Ken's red''Vitikiwi''Annanasnaya''Kokuwa''Issai''Scarlet September'were used as experimental materials.Seven phenological stages of sprouting stage,leaf spreading stage,early flowering stage,full flowering stage,fruit setting stage,fruit ripening stage and deciduous stage were observed and recorded.Fruit shape,fruit mass,fruit diameter,fruit shape index,soluble solids,titratable acid content,solid-acid ratio and vitamin C content were measured.The growth performance of different varieties in Hunan province was comprehensively evaluated by principal component analysis.[Result]Among the 7 introduced kiwifruit varieties,the earliest maturity was'Scarlet September',and the latest maturity was'Issai',and the difference between them was about 30 days.The fruit quality of different varieties was different,the fruit shape index was 1.13-1.57,the largest was'Scarlet September',the smallest was'Kokuwa',the single fruit mass was 10.29-19.54 g,the largest was'Ken's red',and the smallest was'Kokuwa'.The content of soluble solids was the highest in'Issai'(23.97% )and the lowest in'Purpurna Saduwa'(16.62% ).The highest titratable acid content was'Kokuwa'(1.33% )and the lowest was'Issai'(0.75% ).The vitamin C content was 48.00-99.16 mg/kg,of which'Kokuwa'was the highest and'Issai'was the lowest.There is a complex correlation among the fruit quality indexes of A.aarguta.And the principal component analysis method was used to evaluate the fruit quality.The top three varieties with comprehensive scores were'Kokuwa''Issai''Annanasnaya',while'Scarlet September'and'Purpurna Saduwa'had lower comprehensive scores.[Conclusion]The suitable varieties of A.aarguta planted in low mountains and hills of Hunan province are'Kokuwa''Issai''Annanasnaya'.
Actinidi aargutaintroduction and cultivationphenological phasefruit qualityprincipal component analysis
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