Articles
STUDIES ON GROWTH DISORDERS OF PISTACHIO CAUSED BY ROOT-KNOT NEMATODE (MELOIDOGYNE JAVANICA) IN MAHVELAT IRAN
Article number
940_46
Pages
323 – 330
Language
English
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.
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.
Authors
A. Fazeli Salmani, A. Tehranifar, G. Davarynejad, E. Mahdikhani, A. Mokaram
Keywords
pistachio, Meloidogyne javanica, Razavi Khorasan province
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