Occurrence and Identification of Root-Knot Nematodes on Red Dragon Fruit (Hylocereus polyrhizus) in Hainan, China
文献类型： 外文期刊
作者： Long, Haibo 1 ; Chen, Yuan 1 ; Pei, Yueling 1 ; Li, Huadong 2 ; Sun, Yanfang 1 ; Feng, Tuizi 1 ;
作者机构： 1.Chinese Acad Trop Agr Sci, Key Lab Pests Comprehens Governance Trop Crops, Minist Agr & Rural Affairs, Environm & Plant Protect Inst, Haikou 571101, Hainan, Peoples R China
2.Sinochem Fertilizer Co Ltd, Hainan Branch, Haikou 570228, Hainan, Peoples R China
关键词： occurrence; root-knot nematode; Meloidogyne enterolobii; Meloidogye javanica; dragon fruit
期刊名称：AGRONOMY-BASEL （ 影响因子：3.949； 五年影响因子：4.117 ）
ISSN：
年卷期： 2022 年 12 卷 5 期
页码：
收录情况： SCI
摘要： The genus Meloidogyne is one of the most economically damaging plant parasitic nematodes on a worldwide basis. To date, only the dragon fruits in Brazil were reported infected by M. javanica or M. incognita in previous surveys. From 2019-2021, we conducted our investigation in 62 orchards from 10 counties of Hainan, which are the main producing areas of dragon fruits in China. The collected roots were visually scored by gall index to evaluate the distribution and severity of diseases caused by Meloidogyne. Then, the isolated nematodes were further confirmed by a combination of morphological and molecular analysis. This survey revealed that the root-knot nematodes were widely distributed in red dragon fruit planting areas in Hainan and caused severe symptoms including stunting, wilting, and yellowing of the stems. The nematode populations were identified as M. enterolobii and M. javanica, among which, M. enterolobii accounted for a larger proportion, 93.9%. To our knowledge, this is the first report of M. enterolobii causing diseases on red dragon fruit. The results obtained from this survey will provide an insight into the presence of root-knot nematodes in dragon fruit plants. Also, these results will raise attention for developing effective management strategies to prevent further spread of root-knot nematodes on dragon fruit in Hainan.
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