Welcome to Chinese Journal of Tropical Crops,

Chinese Journal of Tropical Crops ›› 2021, Vol. 42 ›› Issue (9): 2563-2570.DOI: 10.3969/j.issn.1000-2561.2021.09.017

• Plant Cultivation, Physiology & Biochemistry • Previous Articles     Next Articles

Comparison of Change Rules of Fruit Growth and Quality of Different Early Season Longan Varieties (Lines)

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

  1. Collage of Agronomy, Guangxi University, Nanning, Guangxi 530004, China
  • Received:2020-11-16 Revised:2020-12-03 Online:2021-09-25 Published:2021-11-01
  • Contact: PENG Jiechun,DENG Yingyi


In this study, five early season longan varieties (lines) of ‘Guifengzao’ ‘Guiguanzao’ ‘Guilong No.1’ ‘Gushan No.2’ and ‘Shixia’ were taken as study materials to study the change rules of their fruit growth and quality. During fruit development, the transverse and longitudinal diameter, single fruit weight, edible rate, a * and c* values of color difference of the five early season longan varieties (lines) increased or fluctuated. Color difference L* and b* values increased rapidly and then slowly fluctuated. Soluble solids and vitamin c of most varieties increased rapidly and then decreased slowly. value of color difference and titratable acid of most varieties decreased gradually or fluctuated. Soluble sugar increased gradually before ripening and fluctuated in the later stage. Soluble protein fluctuated in the form of “M” or “W”. ‘Guifengzao’ and ‘Guiguanzao’ entered the mature stage one week earlier than ‘Shixia’. ‘Guilong No.1’ had the slowest sugar withdrawal. ‘Guifengzao’ had the largest transverse diameter, single fruit weight and soluble protein. ‘Guiguanzao’ had the largest longitudinal diameter. ‘Guilong No.1’ had the highest soluble solids, vitamin C and soluble sugar contents and the lowest titratable acid content. ‘Shixia’ had the highest edible rate. Comprehensive evaluation of fruit quality at mature stage, ‘Guifengzao’ was the best, followed by ‘Shixia’ ‘Guilong No.1’, ‘Gushan No.2’ and ‘Guiguanzao’.

Key words: longan, early season variety (lines), fruit development, fruit quality, change rule

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