tailieunhanh - Characterization of guava root knot nematode, Meloidogyne enterolobii occurring in Tamil Nadu, India

Root knot nematodes (Meloidogyne spp.) are the most common and destructive plant parasitic nematode group with wide host range of crops, including guava (Psidium guajava L.). Meloidogyne enterolobii (Syn:M. mayaguensis), the root knot nematode of the guava tree, belongs to the group of tropical root knot nematodes and is considered as one of the most damaging species, due to its wide host range, pathogenicity and ability to develop and reproduce on several crops carrying resistance genes. The present study was aimed at identifying Meloidogyne species attacking guava orchards in three districts such as Dindigul, Coimbatore and Thiruvannamalai districts of Tamil Nadu. The morphological study based on perineal patterns of the females confirmed the presence of Meloidogyne enterolobii. In addition, the molecular identification was carried out based on the partial sequence of internal transcribed spacer (ITS1-ITS2) regions. The amplicon size was approximately 600 bp. | Characterization of guava root knot nematode, Meloidogyne enterolobii occurring in Tamil Nadu, India

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