Effect of continuous growing of resistant soybean genotypes on Meloidogyne arenaria race 1 reproduction
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چکیده
منابع مشابه
Aggressiveness and Reproduction of Four Meloidogyne arenaria Populations on Soybean.
Aggressiveness and reproduction differed among four geographical populations of M. arenaria on six soybean cultivars in field microplots. These differences were consistent over 3 years. The populations did not differ in virulence; i.e., population by cultivar interactions were not significant. Perineal pattern morphology, the North Carolina differential host test, chromosome counts of immature ...
متن کاملCellular Responses of Resistant and Susceptible Soybean Genotypes Infected with Meloidogyne arenaria Races 1 and 2.
The cellular responses induced by Meloidogyne arenaria races 1 and 2 in three soybean genotypes, susceptible CNS, resistant Jackson, and resistant PI 200538, were examined by light microscopy 20 days after inoculation. Differences in giant-cell development were greater between races than among the soybean genotypes. M. arenaria race 1 stimulated small, poorly formed giant-cells in contrast with...
متن کاملDamage Potential and Reproduction of Meloidogyne incognita Race 3 and M. arenaria Race 1 on Kenaf.
The effects of Meloidogyne incognita race 3 and M. arenaria race 1 on growth of kenaf cv. Everglades 41 was determined under greenhouse conditions. Seedlings of kenaf were inoculated with initial population densities (Pi) of 0, 625, 1,250, 2,500, 5,000, and 10,000 eggs/plant and placed on greenhouse benches in a randomized complete block design. Plant growth and nematode reproduction were asses...
متن کاملSummer Cropping Effects on the Abundance of Meloidogyne arenaria Race 2 and Subsequent Soybean Yield.
A summer-planted crop of alyceelover significantly (P < 0.05) increased the soil abundance of Meloidogyne arenaria race 2 juveniles by 3.7-fold when measured in the following spring. Maize, sorghum, and soybean had no significant effects on residual nematode numbers over the same period. Summer plantings of aeschynomene, cotton, hairy indigo, tespedeza, millet, peanut, and sorghum-sudangrass we...
متن کاملEvaluation of Soybean Cultivars for Production in Meloidogyne arenaria Race 2-Infested Soil.
Field trials with 56 soybean cultivars and breeding lines from public and private sources were conducted from 1986 through 1988 at a site infested with Meloidogyne arenaria race 2. Differences (P < 0.05) among yields were found each year and yields were negatively correlated (P < 0.01) with root-knot nematode galling. All entries were galled and the highest-yielding entries, 'Kirby' and 'Coker ...
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ژورنال
عنوان ژورنال: Fitopatologia Brasileira
سال: 2001
ISSN: 0100-4158
DOI: 10.1590/s0100-41582001000100017