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Molecular identification of Meloidogyne species isolated from potato in China and evaluation of the response of potato genotypes to these isolates

文献类型： 外文期刊

作者： Mao, Yanzhi 1 ; Hu, Yanfeng 2 ; Li, Chunjie 2 ; Zhang, Hongji 3 ; Yu, Decai 3 ; Liu, Xicai 1 ; Yang, Gengbin 1 ; Wang, Co 1 ;

作者机构： 1.Heilongjiang Acad Agr Sci, Keshan Branch, Keshan 161606, Peoples R China

2.Chinese Acad Sci, Northeast Inst Geog & Agroecol, Key Lab Mollisols Agroecol, Harbin 150081, Heilongjiang, Peoples R China

3.Yunnan Agr Univ, Coll Plant Protect, Key Lab Agrobiodivers & Pest Control Educ, State Key Lab Conservat & Utilizat Bioresources Y, Kunming 650201, Yunnan, Peoples R China

关键词： Meloidogyne incognita; Meloidogyne javanica; nematode identification; resistance evaluation; root-knot nematodes; Solanum tuberosum

期刊名称：NEMATOLOGY （ 影响因子：1.442； 五年影响因子：1.485 ）

ISSN： 1388-5545

年卷期： 2019 年 21 卷 8 期

页码：

收录情况： SCI

摘要： Root-knot nematodes (Meloidogyne spp.) are one of the most economically important groups of plant-parasitic nematodes on potato (Solanum tuberosum), but there has been little study regarding their occurrence on potato in China. In this study, the nematodes in two nematode-infected potato samples collected from Yunnan Province were identified as Meloidogyne spp. Amplicon sizes with species-specific PCR primers indicated that one sample was M. javanica and the other was M. incognita. Cultures established from these two isolates were used to screen 28 potato genotypes in China. All genotypes were susceptible to both M. javanica and M. incognita. However, the mean root galling index and number of egg masses were generally higher for M. javanica than M. incognita. Variable susceptibility was demonstrated among the tested potato genotypes. No available resistant potato cultivars plus a rapid spread of Meloidogyne spp. will result in a potential threat to potato production in China.

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