Reaction of upland rice genotypes to the brown spot disease pathogen Bipolaris oryzae
Loading...
Date
2017
Journal Title
Journal ISSN
Volume Title
Publisher
African Journal of Rural Development (AFJRD)
Abstract
Low yields in rice (Oryza sativa L.) are attributed to several factors but diseases represent one of the main
constraints. The Brown spot disease (caused by Bipolaris oryzae (Breda de Haan) Shoem) in most cases
causes considerable losses in rice growing areas. These yield loses could be averted through development
and deployment of resistant varieties. In this study, a field experiment was conducted at the National
Crops Resources Research Institute (NaCRRI) – Namulonge, Uganda during 2013 with the objective of
identifying new sources of resistance to brown spot disease. Among the 100 tested rice lines, 18 lines
were rated as highly resistant, 52 resistant, 27 moderately resistant and three lines including the checks
were susceptible. The results revealed that there was significant variation in brown spot resistance among
the genotypes tested. The identified resistant lines will be utilized in rice breeding program in Uganda for
development of brown spot resistant genotypes.
Description
Keywords
Brown spot, Bipolaris oryzae, Oryza sativa, Sources of resistance, Uganda
Citation
Marco, M. M., Mildred, O. S., Jimmy, L., Paul, G., & Richard, E. (2017). Reaction of upland rice genotypes to the brown spot disease pathogen Bipolaris oryzae. African Journal of Rural Development (AFJRD), 2(1978-2017-1979), 127-133.