Comparison of fruit morphology and nutrition metabolism in different cultivars of kiwifruit across developmental stages

作者：Yufei Li, Weijia Jiang, Chunhong Liu, Yuqi Fu, Ziyuan Wang, Mingyuan Wang, Cun Chen, Li Guo, Qiguo Zhuang, Zhibin Liu · 发表于：PeerJ · 年份：2021 · DOI：10.7717/peerj.11538 · 被引用次数：19 · 研究领域：Plant Physiology and Cultivation Studies、Postharvest Quality and Shelf Life Management、Horticultural and Viticultural Research

Kiwifruit ( Actinidia ) is becoming increasingly popular worldwide due to its favorable flavour and high vitamin C content. However, quality parameters vary among cultivars. To determine the differences in quality and metabolic parameters of kiwifruit, we monitored the growth processes of ‘Kuilv’ ( Actinidia arguta ), ‘Hongyang’ ( Actinidia chinensis ) and ‘Hayward’ ( Actinidia deliciosa ). We found that ‘Kuilv’ required the shortest time for fruit development, while ‘Hayward’ needed the longest time to mature. The fruit size of ‘Hayward’ was the largest and that of ‘Kuilv’ was the smallest. Furthermore, ‘Hongyang’ showed a double-S shape of dry matter accumulation, whereas ‘Kuilv’ and ‘Hayward’ showed a linear or single-S shape pattern of dry matter accumulation during development. The three cultivars demonstrated the same trend for total soluble solids accumulation, which did not rise rapidly until 90–120 days after anthesis. However, the accumulation of organic acids and soluble sugars varied among the cultivars. During later fruit development, the content of glucose, fructose and quinic acid in ‘Kuilv’ fruit was far lower than that in ‘Hongyang’ and ‘Hayward’. On the contrary, ‘Kuilv’ had the highest sucrose content among the three cultivars. At maturity, the antioxidative enzymatic systems were significantly different among the three kiwifruit cultivars. ‘Hongyang’ showed higher activities of superoxide dismutase than the other cultivars, while the catalase content of ‘H...