Journal of Phytopathology (2005) 153, 250-253

S.D. Park, Z. Khan, J.G. Ryu, Y.J. Seo and J.T. Yoon (2005)
Effect of initial density of Meloidogyne hapla on its pathogenic potential and reproduction in three species of medicinal plants
Journal of Phytopathology 153 (4), 250-253
Abstract: The pathogenic potential and reproduction fitness of Meloidogyne hapla on three species of medicinal plants, Angelica koreana, Peucedanum japonicum and Astragalus membranaceus was determined in potted soil under greenhouse conditions. Three weeks old seedlings were inoculated with population density (Pi) of 1000; 2000; 3000; 4000; 5000 and 10000 juveniles (J₂)/kg soil. A significant damage was observed in shoot and root length, weight and root-diameter of these plants by all Pi levels at 90-day postinoculation. Damage increased with increase in Pi up to 5000 J₂/kg soil. At 5000 Pi caused 34.8, 34.1 and 33.3% reduction in root weight of Ang. koreana, P. japonicum and Ast. membranaceus, respectively. Greater root gall severity was observed on Ang. koreana and P. japonicum than on Ast. membranaceus at all Pi levels. At 5000 Pi, root gall severity was 5.0, 5.0, and 3.0 on Ang. koreana, P. japonicum and Ast. membranaceus, respectively. Increasing rate of Pi exponentially reduced reproductive factor (Rf) of M. hapla on all of these medicinal plants. However, Rf was higher on Ang. koreana and P. japonicum than on Ast. membranaceus at all Pi levels. The host status of these medicinal plants renders them unsuitable for their use in crop rotation system in M. hapla-infested fields.
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Link to article at publishers website
Database assignments for author(s): Zakaullah Khan

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution
damage/losses/economics

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Meloidogyne hapla	Astragalus (crop)	Korea-South
	Meloidogyne hapla	Angelica (crop)	Korea-South
	Meloidogyne hapla	Peucedanum (crop)	Korea-South