Irrigated and Rain-Fed Lowland Rice Breeding in Uganda: A Review
Loading...
Date
2021
Journal Title
Journal ISSN
Volume Title
Publisher
IntechOpen
Abstract
Since introduction of rice into Uganda in 1904, improvement of the irrigated
and rain-fed lowland types was undertaken to address a number of production and
quality constraints in three consecutive and overlapping phases. The initial phase
was achieved through evaluation of introduction, selection of promising lines and
subsequent release of the selected lines for production by the farmers. In the second
phase, genetic potential of traits and characteristics of interest were analyzed and
used to guide selection of suitable parents for hybridization and the third phase
employed genotyping approach in screening and selection of the parental lines and
the segregating populations to enhance the breeding efficiency for the traits of
importance. Simultaneously, the key production constraints addressed included
resistance to rice yellow mottle virus (RYMV), rice blast, bacterial leaf blight and
narrow leaf spot diseases as well as submergence tolerance and cold tolerance. The
quality traits considered for the improvement alongside the grain yield parameters
were the grain aroma, amylose content, shape and size. These interventions have
resulted into release and wide adoption of seven rice varieties in Uganda besides
several breeding lines which have informally diffused into different major rice
production agro-ecology. Subsequently, it can be concluded that a substantially
strong and functional breeding platform for rice in Uganda has been established.
Description
Keywords
Evaluation, Genotyping, Grain quality and yield, Hybridization, Inbred lines and variety release
Citation
Lamo, J., Ochan, D., Abebe, D., Ayalew, Z. Z., Mlaki, A., & Ndikuryayo, C. (2021). Irrigated and Rain-Fed Lowland Rice Breeding in Uganda: A Review. IntechOpen. http://dx.doi.org/10.5772/intechopen.97157