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Searching for new sources of pink stem borer resistance in maize

AuthorsButrón Gómez, Ana María ; Sandoya Miranda, Germán ; Santiago Carabelos, Rogelio ; Ordás Pérez, Amando ; Rial, A.; Malvar Pintos, Rosa Ana
Sesamia nonagrioides
Zea mays
Issue Date2006
CitationGenetic Resources and Crop Evolution Volume 53, Number 7; 1455-1462
AbstractThe pink stem borer (Sesamia nonagrioides Lef.) is the main corn (Zea mays L.) pest in the Mediterranean area. Although, screening for resistance to this pest has been successful, the level of resistance shown by the most resistant varieties is not high. The objectives of the present work were: (i) the evaluation for pink stem borer resistance of the nontested inbred lines, field and popcorn materials, from the collection maintained at the Misión Biológica de Galicia and (ii) the study of the performance, under pink stem borer infestation, of inbreds selected for resistance to pink stem borer in hybrid combination. Forty four inbred lines nontested yet for resistant to pink stem borer along with five inbred lines previously reported as resistant to stem and ear attack, were evaluated in 2002 and 2003. In adjacent experiments, hybrids EP79× W552, EP77× B93, and A661× EP42 were tested along with a resistant hybrid, MEB531-Bt, and a susceptible hybrid, INRA 260. New sources of resistance to pink stem borer have been detected among inbred lines improving the level of resistance presented by previously tested inbreds. Some of these lines were successfully developed by pedigree selection for resistance to pink stem borer.
Publisher version (URL)http://dx.doi.org/10.1007/s10722-005-6842-9
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