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Título: Disease Severity and Susceptibility of Sorghum [Sorghum bicolor (L.) Moench.] to Infection by Claviceps africana Frederickson, Mantle and de Milliano in Mexico and the United States of America
Palabras clave: Ergot, hybrids
male-sterile lines
Fecha de publicación: 31-Jul-2012
Editorial: Revista mexicana de fitopatología
Descripción: Experiments were carried out at College Station, USA, and Rio Bravo and Celaya, Mexico, under irrigated conditions during 2002 and 2003. Six sorghum hybrids and three male-sterile lines were planted at each location. Claviceps africana isolates were applied every other morning. Panicles were inoculated using a hand atomizer until runoff with a suspension of 1.6 x 10(6) conidia mL-1. Ergot severity was measured at milk stage. Bartlett's test was performed to determine homogeneity of variances among years. The results showed variability in susceptibility to ergot among genotypes at a single planting date, at planting dates within a year, locations and years. Ergot severity was statistically greater in 2002 in both hybrids and A-lines. Celaya had the greatest amount of ergot on hybrids, followed by College Station and Rio Bravo. In general, A-lines had the greatest severity. ATx2752 had the lowest ergot severity (22.8%), while ATx635 and ATx623, had 27.4% and 36.2%, respectively. Sorghum hybrid AP2233 was the most susceptible, and NC+8R18 showed the least amount of ergot severity.
Other Identifiers: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S0185-33092008000200004
Aparece en las Colecciones:Revista Mexicana de Fitopatologia

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