|Hanna, Wayne - UNIVERSITY OF GEORGIA|
Submitted to: Journal of Nematology
Publication Type: Abstract Only
Publication Acceptance Date: August 12, 2004
Publication Date: September 1, 2004
Citation: Timper, P., Hanna, W. 2004. Host status of pearl millet for sting, stubby-root, and lesion nematodes [abstract]. Journal of Nematology. 36:349. Technical Abstract: New hybrids of pearl millet (Pennisetum glaucum) have recently been developed for use as a grain crop in the southern United States. Because this crop is extremely drought tolerant and resistant to mycotoxins, it has tremendous promise as an alternative feed grain for dryland production. 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 important plant-parasitic nematodes was unknown. The objective of this study was to determine reproduction of Belonolaimus longicaudatus, Paratrichodorus minor, and Pratylenchus brachyurus on two pearl millet hybrids (HGM-100 and TifGrain 102) compared to reproduction on cotton (Gossypium hirsutum), corn (Zea mays), and peanut (Arachis hypogaea). Each nematode species was tested in separate greenhouse experiments with seven to nine replicate pots per crop. Two months after inoculation, sting and stubby-root nematodes were extracted from soil by centrifugal flotation, and lesion nematodes were extracted from roots by Baermann funnel/mist chamber. Each experiment was conducted twice. The relative host status of the crops for the nematodes is as follows. Peanut and the two millet hybrids were poor hosts for B. longicaudatus, whereas cotton and corn were good hosts. Peanut and TifGrain 102 were poor hosts for P. minor, whereas cotton, corn, and HGM-100 were good hosts. Both millet hybrids were poor hosts for P. brachyurus, whereas cotton, corn, and peanut were good hosts. Growing TifGrain 102 in rotation with other crops should not lead to damaging populations of sting, stubby-root, or lesion nematodes.