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United States Department of Agriculture

Agricultural Research Service

Title: Nematode Resistance in Cotton

Authors
item Creech, Roy - MISS STATE UNIVERSITY
item Jenkins, Johnie
item Lawrrence, Gary - MISS STATE UNIVERSITY
item McCarty, Jack

Submitted to: Book Chapter
Publication Type: Book / Chapter
Publication Acceptance Date: January 7, 1999
Publication Date: N/A

Interpretive Summary: Nematode parasitism of cotton is important due to yield losses and their increased distribution across production regions. The most important widespread species affecting cotton in the United States is the southern root knot nematode. Other nematodes that attack cotton are reniform and lance. Currently there are no commercial cultivars of cotton available that offer high levels of resistance to the root knot, reniform or lance nematode. Sources of resistance to the root knot have been identified while searches continue for resistance to reniform and lance nematodes. Investigators are looking for ways of identifying genetic markers and other procedures to aid in the transfer of root knot resistance to cultivars. The development and use of resistant cultivars would reduce yield losses associated with nematode attack.

Technical Abstract: Nematode parasitism of cotton, Gossypium hirsutum L., is important due to yield losses and increased distribution across production regions. The most important widespread species affecting cotton in the United States is the southern root knot nematode, Meloidogyne incognita (Kofoid and White) Chitwood. Other nematodes on cotton are reniform (Rotylenchulus reniformis) and lance (Hoplolaimus columbus, H. galeatus and H. magnistylus). Currently there are no commercial cultivars of G. hirsutum that offer high levels of resistance to the root knot, reniform or lance nematode. Sources of resistance to the root knot nematode have been identified in G. hirsutum while searches continue for resistance to reniform and lance nematodes. Investigations are elucidating ways of identifying genetic markers and other procedures for the transfer of root knot resistance to cultivars in an efficient manner. The development and deployment of resistant cultivars would reduce yield losses associated with nematode attack.

Last Modified: 4/16/2014
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