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ARS Home » Southeast Area » Tifton, Georgia » Crop Protection and Management Research » Research » Publications at this Location » Publication #169076
Title: REPRODUCTION OF BELONOLAIMUS LONGICAUDATUS, MELOIDOGYNE JAVANICA, PARATRICHODORUS MINOR, AND PRATYLENCHUS BRACHYURUS ON PEARL MILLET (PENNISETUM GLAUCUM)

Author
item Timper, Patricia - Patty
item HANNA, W - UNIVERSITY OF GEORGIA

Submitted to: Journal of Nematology
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 1/17/2005
Publication Date: 6/1/2005
Citation: Timper, P., Hanna, W.W. 2005. Reproduction of Belonolaimus longicaudatus, Meloidogyne javanica, Paratrichodorus minor, and Pratylenchus brachyurus on pearl millet (Pennisetum glaucum). Journal of Nematology. 37(2):214-219.

Interpretive Summary: Pearl millet has potential as a grain crop for dryland crop production in the southeastern United States. Whether or not pearl millet will be compatible in rotation with cotton, corn, and peanut will depend, in part, on its host status for important plant-parasitic nematodes of these crops. The pearl millet hybrid 'TifGrain 102' is resistant to both the southern root-knot and the peanut root-knot nematode; however, its host status for other plant-parasitic nematodes was unknown. The objective of this study was to compare reproduction of the sting nematode, stubby-root nematode, lesion nematode, and the Javanese root-knot nematode on pearl millet ('HGM-100' and 'TifGrain 102') relative to cotton, corn, and peanut. Separate greenhouse experiments were conducted for each nematode species. Reproduction of sting was lower on peanut and the two millet hybrids than on cotton and corn. Reproduction of the stubby-root nematode was lower on peanut and 'TifGrain 102' than on cotton, corn, and 'HGM-100'. Reproduction of the lesion nematode was lower on both millet hybrids than on cotton, corn, and peanut. Reproduction of the Javanese root-knot nematode was greater on peanut than on the two millet hybrids and corn. Cotton was a nonhost. 'TifGrain 102' was more resistant than 'HGM-100' to reproduction of the sting, stubby-root, and Javanese root-knot nematode. Our results demonstrate that 'TifGrain 102' is a poor host for the sting and lesion nematode and, relative to other crops tested, is less likely to increase densities of the stubby-root and Javanese root-knot nematode.

Technical Abstract: Pearl millet (Pennisetum glaucum) has potential as a grain crop for dryland crop production in the southeastern United States. Whether or not pearl millet will be compatible in rotation with cotton (Gossypium hirsutum), corn (Zea mays), and peanut (Arachis hypogaea) will depend, in part, on its host status for important plant-parasitic nematodes of these crops. The pearl millet hybrid 'TifGrain 102' is resistant to both Meloidogyne incognita race 3 and M. arenaria race 1; however, its host status for other plant-parasitic nematodes was unknown. The objective of this study was to compare reproduction of Belonolaimus longicaudatus, Paratrichodorus minor, Pratylenchus brachyurus, and Meloidogyne javanica race 3 on pearl millet ('HGM-100' and 'TifGrain 102') relative to cotton, corn, and peanut. Separate greenhouse experiments were conducted for each nematode species. Reproduction of B. longicaudatus was lower on peanut and the two millet hybrids than on cotton and corn. Reproduction of P. minor was lower on peanut and 'TifGrain 102' than on cotton, corn, and 'HGM-100'. Reproduction of P. brachyurus was lower on both millet hybrids than on cotton, corn, and peanut. Reproduction of M. javanica race 3 was greater on peanut than on the two millet hybrids and corn. Cotton was a nonhost. 'TifGrain 102' was more resistant (P < 0.05) than 'HGM-100' to reproduction of B. longicaudatus, P. minor, and M. javanica. Our results demonstrate that 'TifGrain 102' is a poor host for B. longicaudatus and P. brachyurus (Rf < 1) and, relative to other crops tested, is less likely to increase densities of P. minor and M. javanica.