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Histopathological changes induced by Meloidogyne incognita in some ornamental plants


Citation

Siddiqui, Yasmeen and Ali, Asgar and Naidu, Yuvarani (2014) Histopathological changes induced by Meloidogyne incognita in some ornamental plants. Crop Protection, 65. pp. 216-220. ISSN 0261-2194; ESSN: 1873-6904

Abstract

Histopathological changes induced by the root-knot nematode (Meloidogyne incognita) in five ornamental plants, specifically, Calendula (Calendula officinalis), Centaurea (Centaurea montana), Papaver (Papaver somniferum), Chrysanthemum (Chrysanthemum morifolium) and Dianthus (Dianthus caryophyllus), were investigated. Based on the galling index (GI), Centaurea was classified as susceptible, Calendula as moderately susceptible, and Papaver as moderately resistant, while Chrysanthemum and Dianthus were highly resistant to M. incognita infection. The histopathology of the galled roots of Centaurea, Calendula, and Papaver during later stages of infection showed that nematodes were localized entirely within the cortex and generally oriented horizontally to the vascular cylinder. Most of the females were mature, and a few of them were associated with egg masses. Giant cells with a variation in cell sizes were observed in the galled roots of all three of the plant species and exhibited a granular cytoplasm and hypertrophied nuclei as a typical reaction to nematode feeding.


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Additional Metadata

Item Type: Article
Divisions: Institute of Tropical Agriculture
DOI Number: https://doi.org/10.1016/j.cropro.2014.08.001
Publisher: Elsevier
Keywords: Histopathology; Gall index; Giant cell; Meloidogyne incognita; Nematode
Depositing User: Nabilah Mustapa
Date Deposited: 25 Sep 2015 01:22
Last Modified: 22 Jan 2016 03:31
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.cropro.2014.08.001
URI: http://psasir.upm.edu.my/id/eprint/37870
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