Browsing by Author "Edema, Richard"
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Combining ability for beta-carotene and important quantitative traits in a cassava F1 population
Njenga, Peninah; Edema, Richard; Kamau, Joseph (Academic Journals, 2014)Cassava is ideal for biofortification due to its popularity as a root staple among populations with high vitamin A malnutrition. The crop is vegetatively propagated and retains the enhanced trait across generations. The ... -
A comparative analysis of conventional and marker-assisted selection methods in breeding maize streak virus resistance in maize.
Abalo, Grace; Tongoona, Pangirayi; Derera, John; Edema, Richard (Crop Science Society of America, 2009)Reliable information regarding comparative advantage of marker-assisted selection (MAS) over conventional selection (CS) in breeding for maize streak virus (MSV) resistance in maize (Zea mays L.) is scarcely available. A ... -
Distribution and biocontrol potential of phlD+ pseudomonads in corn and soybean fields
McSpadden-Gardener, Brian B.; Gutierrez, Laura J.; Joshi, Raghavendra; Edema, Richard; Lutton, Elizabeth (The American Phytopathological Society, 2005)The abundance and diversity of phlD+ Pseudomonas spp. colonizing the rhizospheres of young, field-grown corn and soybean plants were assayed over a 3-year period. Populations of these bacteria were detected on the large ... -
Exploiting grain-filling rate and effective grain-filling duration to improve grain yield of early-maturing maize
Gasura, Edmore; Setimela, Peter; Edema, Richard; Gibson, Paul T.; Okori, Patrick; Tarekegne, Amsal (Crop Science Society of America, 2013)Early-maturing maize (Zea mays L.) genotypes yield 15 to 30% less than late-maturing genotypes. One strategy for improving grain yield in the early-maturing group involves assessment of grain-filling traits as secondary ... -
Genotype-by-environment interaction of yam (Dioscorea species) for yam mosaic virus resistance, dry matter content and yield in Uganda
Amponsah, Emmanuel Adjei; Esuma, Williams; Alicai, Titus; Boache, Emmanuel Chamba; Edema, Richard; Onziga, Isaac Dramadri; Adebo, Alfred Ozimati; Agaba, Rolland; Odong, Thomas L. (MDPI, 2022-08-23)Often, yam cultivars grown in different agro-ecologies show differential responses across production environments, a term known as "genotype-by-environment interaction. Such genotype-by-environment interaction makes the ... -
Morphological and genetic diversity analysis of rice accessions (Oryza sativa L.) differing in iron toxicity tolerance
Onaga, Geoffrey; Egdane, James; Edema, Richard; Abdelbagi, Ismail (Korean Society of Crop Science and Springer, 2013)A major emphasis in breeding for iron toxicity tolerance in rice is to identify differences that are associated with resistance and harness them for genetic improvement. In this study, thirty accessions, including IRRI ... -
Population diversity of rice bacterial leaf blight isolates in Uganda
Habarurema, Innocent; Edema, Richard; Gibson, Paul; Lamo, Jimmy; Asea, Godfrey; Séré, Yacouba; Gasore, Elie R. (Pelagia Research Library, 2013)The deployment of resistant cultivars is the best option to control bacterial leaf blight (BLB) and requires an understanding of the pathogen diversity. BLB caused by Xanthomonas oryzae pv.oryzae is a destructive disease ... -
Reaction of waxy and opaque-2 inbreds and their derived progenies to multiple foliar diseases of maize in Uganda
Bombom, Alexander; Okori, Patrick; Gibson, Paul; Edema, Richard; Asea, Godfrey; Rubaihayo, Patrick (Canadian Center of Science and Education, 2012)Specialty maize lines possessing important endosperm genes waxy and/or opaque-2 enhance processing and nutritional qualities of the grain. However, production and utilization of specialty maize varieties for food, feeds ... -
Successful application of FTA® Classic Card technology and use of bacteriophage 29 DNA polymerase for large-scale field sampling and cloning of complete maize streak virus genomes
Owor, Betty E.; Shepherd, Dionne N.; Taylor, Nigel J.; Edema, Richard; Monjane, Adѐrito L.; Thomson, Jennifer A.; Martin, Darren P.; Varsani, Arvind (Elsevier, 2007)Leaf samples from 155 maize streak virus (MSV)-infected maize plants were collected from 155 farmers’ fields in 23 districts in Uganda in May/June 2005 by leaf-pressing infected samples onto FTA® Classic Cards. Viral DNA ... -
Transmission of viral RNA and DNA to maize kernels by vascular puncture inoculation
Redinbaugh, Margaret G.; Louie, Raymond; Ngwira, Patricia; Edema, Richard; Gordon, Donald T.; Bisaro, David M. (Elsevier Science, 2001)Vascular puncture inoculation (VPI) is an effective technique for transmission of maize viruses without using arthropods or other biological vectors. It involves using a jeweler’s engraving tool to push minuten pins through ... -
Variability of grain-filling traits in early maturing CIMMYT tropical maize inbred lines
Gasura, Edmore; Setimela, Peter S.; Tarekegne, Amsal; Icishahayo, David; Edema, Richard; Gibson, Paul T.; Okori, Patrick (Crop Science Society of America, 2014)Grain-filling rate (GFR), effective grain-filling duration (EGFD), and total grain-filling duration (TGFD) are important physiological traits of maize (Zea mays L.) grain yield (GY) formation. To devise effective breeding ...