Submitted to: International Plant Resistance to Insects Workshop Abstracts & Proceedings
Publication Type: Abstract Only
Publication Acceptance Date: 2/20/2006
Publication Date: 4/9/2006
Citation: Ni, X., J.P. Wilson, J. Rajewski, D. Buntin, I. Dweikat. 2006. Field screening of pearl millet for chinch bug resistance. International Plant Resistance to Insects Workshop Abstracts & Proceedings. Interpretive Summary: not required
Technical Abstract: Eight hybrids and eight inbred lines of pearl millet (Pennisetum glaucum L. R. Br.) were screened for chinch bug [Blissus leucopterus leucopterus (Say) (Hemiptera: Blissidae)] resistance using natural infestation. The strips of ‘Dove’ proso millet (Panicum miliaceum L.) were planted between the pearl millet plots to attract dispersal chinch bug adults. The adult and nymph data showed that Dove proso millet could effectively establish the initial chinch bug infestation (> 16.3 adults per plant) when the pearl millet seedlings were at the 6-leaf stage. The number of adults and nymphs, and plant injury ratings (i.e., visual stunting and necrosis ratings, and crop stand losses) were significantly (P < 0.05) different among all of the entries. Three of the 16 entries showed the least amount of chinch bug injury. Possible resistance mechanisms of antixenosis and tolerance were also discussed.