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Chinese Journal of Tropical Crops ›› 2021, Vol. 42 ›› Issue (8): 2247-2254.DOI: 10.3969/j.issn.1000-2561.2021.08.017

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Comparison of Fruit Development and Quality Change Rules of New Longan Varieties (Lines) Introduced into Nanning

HE Jianan, PENG Jiechun, WU Yu, DENG Yingyi**(), PAN Jiechun*, XU Jiongzhi, QIN Tiaojiao   

  1. College of Agriculture, Guangxi University, Nanning, Guangxi 530004, China
  • Received:2020-07-29 Revised:2020-09-12 Online:2021-08-25 Published:2021-09-09
  • Contact: DENG Yingyi

Abstract:

In order to study the fruit development and quality changes of new longan varieties (lines) in Nanning, Guangxi, three new longan varieties (lines), ‘Fuwan No.8’, ‘Wanxiang’ and ‘Baoshi No.1’, which were introduced from the Fruit Research Institute, Fujian Academy of Agricultural Sciences, and the main cultivars in Guangxi, ‘Shixia’ and ‘Guiming No.1’, were used as the experimental materials. In order to provide a theoretical basis for the introduction and demonstration of new longan varieties and the formulation of corresponding cultivation and management techniques, the variation rules of single fruit weight, edible rate, fruit shape index, soluble solids, vitamin C, soluble protein, titratable acid and soluble sugar were provided. The single fruit weight of ‘Wanxiang’ was the largest, followed by that of ‘Baoshi No.1’, ‘Fuwan No.8’ and ‘Guiming No.1’, and that of ‘Shixia’ was the smallest. The edible rate of ‘Fuwan No.8’ was the highest, followed by that of ‘Wanxiang’ and ‘Baoshi No.1’, which was higher than that of ‘Guiming No.1’ and ‘Shixia’. The ripening time of ‘Shixia’ was the earliest, followed by that of ‘Baoshi No.1’, ‘Guiming No.1’, ‘Fuwan No.8’ and ‘Wanxiang’. ‘Guiming No.1’ was the slowest in soluble sugar content reduction, followed by ‘Fuwan No.8’, ‘Wanxiang’ and ‘Shixia’, and ‘Baoshi No.1’ was the fastest in soluble sugar content reduction. The vitamin C content of ‘Fuwan No.8’ and ‘Guiming No. 1’ was higher than that of the other varieties at the maximum value, followed by that of ‘Wanxiang’ and ‘Baoshi No.1’, and that of ‘Shixia’ was lower. The titratable acid content of ‘Guiming No.1’ and ‘Fuwan No.8’ was higher in the early stage of fruit development, followed by that of ‘Baoshi No.1’, ‘Shixia’ and' ‘Wanxiang’. At the later stage of fruit development, the content of titratable acid in ‘Guiming No.1’, ‘Wanxiang’, ‘Baoshi No.1’ and ‘Fuwan No.8’ was higher, and that of ‘Shixia’ was the lowest. ‘Fuwan No.8’ and ‘Wanxiang’ were late maturing, big and fleshy, and good fruit quality, while ‘Baoshi No.1’ showed early and middle maturity, big fruit and thick flesh, and good fruit quality. They could be used as good introduction materials for medium and late maturing varieties (lines) in Guangxi, which had good popularization and application value in Guangxi, and could enrich the variety structure of longan in Guangxi.

Key words: longan, new varieties (lines), fruit development, quality, comparison

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