Interaction of Meloidogyne incognita and Water Stress in Two Cotton Cultivars

A series of controlled-environment experiments were conducted to elucidate the effects of Meloidogyne incognita on host physiology and plant-water relations of two cotton (Gossypium hirsutum) cultivars that differed in their susceptibility to nematode infection. Inoculation of M. incognita-resistant...

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Veröffentlicht in:Journal of nematology. - 1969. - 23(1991), 4 vom: 15. Okt., Seite 462-7
1. Verfasser: Kirkpatrick, T L (VerfasserIn)
Weitere Verfasser: Oosterhuis, D M, Wullschleger, S D
Format: Aufsatz
Sprache:English
Veröffentlicht: 1991
Zugriff auf das übergeordnete Werk:Journal of nematology
Schlagworte:Journal Article Gossypium hirsutum Meloidogyne incognita cotton nematode root-knot nematode water stress
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520 |a A series of controlled-environment experiments were conducted to elucidate the effects of Meloidogyne incognita on host physiology and plant-water relations of two cotton (Gossypium hirsutum) cultivars that differed in their susceptibility to nematode infection. Inoculation of M. incognita-resistant cultivar Auburn 634 did not affect growth, stomatal resistance, or components of plant-water potential relative to uninoculated controls. However, nematode infection of the susceptible cultivar Stoneville 506 greatly suppressed water flow through intact roots. This inhibition exceeded 28% on a root-length basis and was similar to that observed as a consequence of severe water stress in a high evaporative demand environment. Nematodes did not affect the components of leaf water potential, stomatal resistance, transpiration, or leaf temperature. However, these factors were affected by the interaction of M. incognita and water stress. Our results indicate that M. incognita infection may alter host-plant water balance and may be a significant factor in early-season stress on cotton seedlings 
650 4 |a Journal Article 
650 4 |a Gossypium hirsutum 
650 4 |a Meloidogyne incognita 
650 4 |a cotton 
650 4 |a nematode 
650 4 |a root-knot nematode 
650 4 |a water stress 
700 1 |a Oosterhuis, D M  |e verfasserin  |4 aut 
700 1 |a Wullschleger, S D  |e verfasserin  |4 aut 
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