ISHS Acta Horticulturae 940: XXVIII International Horticultural Congress on Science and Horticulture for People (IHC2010): International Symposium on the Challenge for a Sustainable Production, Protection and Consumption of Mediterranean Fruits and Nuts
STUDIES ON GROWTH DISORDERS OF PISTACHIO CAUSED BY ROOT-KNOT NEMATODE (MELOIDOGYNE JAVANICA) IN MAHVELAT IRAN |
| Authors: | A. Fazeli Salmani, A. Tehranifar, G. Davarynejad, E. Mahdikhani, A. Mokaram |
| Keywords: | pistachio, Meloidogyne javanica, Razavi Khorasan province |
| DOI: | 10.17660/ActaHortic.2012.940.46 |
| Abstract:
Pistachio is one of the most important of horticultural products in Iran. Numerous diseases affected pistachio in the world. Gummosis, verticillium wilt and root-knot nematodes are the most important diseases in the world. Root-knot nematodes, Meloidogyne species, are endoparasitic nematodes that reduce products and cause structural, physiological and biochemical disorders in plants. Severity of damage depends on species and intensity of the nematode population. In this research, pistachio gardens of Mahvelat region (Razavi Khorasan province – Iran) with two cultivars, ‘Ohadi’ and ‘Badami’, were studied. Meloidogyne javanica was found in the area with high populations. The experiments were set up with 50 replications in 2×5 factorial experiment in an imbalanced Completely Randomized Design. Number of galls and egg mass on the roots were measured. Amount of leaf chlorophyll, leaf area, leaf necrosis, tree height, east-west spread, north-south spread, growth of annual branch, diameter of annual branch and fruit yield were determined. Results showed that with increasing of gall index/egg mass, growth characteristics of plants were significantly reduced according to Tukey test. There was no difference among the treatments for leaf necrosis and diameter of annual branch. Amount of chlorophyll and fruit yield in ‘Badami’ decreased significantly compared with ‘Ohadi’. | |
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