Effects of Citrus Huanglongbing on Tree Traits and Fruit Quality of <i>Citrus maxima </i>(Burm.) Merr. cv. Shatian Yu
Welcome to Chinese Journal of Tropical Crops,

Chinese Journal of Tropical Crops ›› 2020, Vol. 41 ›› Issue (9): 1847-1855.DOI: 10.3969/j.issn.1000-2561.2020.09.018

• Plant Protection & Bio-safety • Previous Articles     Next Articles

Effects of Citrus Huanglongbing on Tree Traits and Fruit Quality of Citrus maxima (Burm.) Merr. cv. Shatian Yu

WANG Feiyan1,2,ZHANG Ruimin1,WU Wen1,ZHU Congyi1,HUANG Yongjing1,CHEN Jiezhong2,*(),ZENG Jiwu1,*()   

  1. 1. Institute of Fruit Tree Research, Guangdong Academy of Agricultural Sciences / Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization, Ministry of Agriculture and Rural Affairs / Guangdong Province Key Laboratary of Tropical and Subtropical Fruit Tree Research, Guangzhou, Guangdong 510640, China
    2. College of Horticulture, South China Agricultural University, Guangzhou, Guangdong 510642, China
  • Received:2019-10-21 Revised:2019-12-25 Online:2020-09-25 Published:2020-10-16
  • Contact: CHEN Jiezhong,ZENG Jiwu


Citrus Huanglongbing (HLB) is a devastating disease that seriously affects the development of citrus industry. It not only leads to leaf yellowing and affects the fruits quality, but also affects the life cycle of citrus trees. In order to investigate the effects of HLB on Shatian pomelo [Citrus maxima (Burm.) Merr. cv. Shatian Yu], the effects of HLB on the leaf morphological characteristics and fruit appearance and internal quality as well as mineral elements of Shatian pomelo were systematically analyzed. The result could provide references for the control of citrus HLB. In this study, the HLB positive Shatian pomelo trees and fruits were used for the experimental group (HLB+) and the HLB negative Shatian pomelo trees and fruits were used as the control group (HLB-). The leaf area, content of chlorophyll a, chlorophyll b and carotenoid of HLB+ leaf decreased by 28.13%, 40.38%, 44.00% and 40.47%, respectively. The color of the HLB+ fruits was abnormal and the fruits of HLB+ was smaller. The average fruit weight of HLB+ fruits decreased by 45.62%. The HLB+ fruits had thinner peels and its most seeds could not develop normally. The vitamin C content of HLB+ fruits was significantly higher than that of HLB- fruits, increased by 26.44%. The content of mineral elements in different tissues changed obviously after infection with HLB. The content of N and Ca of the leaves decreased by 19.00% and 49.72%, respectively, and the content of N of the pulp decreased by 18.00%, but the content of Ca of HLB+ peel and pulp significantly increased compared to the HLB- peel and pulp. And the content of S of the HLB+ trees was significantly lower than that of the healthy trees. The content of B and Cu of the HLB+ leaf decreased by 35.07% and 54.45%, respectively. The content of Cu of the HLB+peel decreased by 42.96% and the content of Zn of the HLB+pulp increased by 41.30%. HLB seriously affected the leaf morphology, fruit quality and mineral element metabolism of Shatian pomelo trees. So more attention should be paid to the prevention and control of HLB-infected Shatian pomelo.

Key words: Citrus Huanglongbing, Citrus maxima (Burm.) Merr. cv. Shatian Yu, color, quality, mineral elements

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