Browsing School of Agricultural Sciences (SAS) by Type
Now showing items 1-20 of 24
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Agrobacterium tumefaciens-Mediated Transformation of Pseudocercospora fijiensis to Determine the Role of PfHog1 in Osmotic Stress Regulation and Virulence Modulation
(Frontiers in Microbiology, 2017-05-16)Black Sigatoka disease, caused by Pseudocercospora fijiensis is a serious constraint to banana production worldwide. The disease continues to spread in new ecological niches and there is an urgent need to develop strategies ... -
Application of Pollen Germination Media on Stigmas during Pollination Increases Seed Set in East African Highland Cooking Bananas (Musa spp.)
(Agronomy, 2021-05-27)Seed set in East African Highland Cooking bananas (EAHBs) is extremely low and therefore hampers breeding. Pollen–pistil interaction is a key contributing factor. We assessed the effect of pollen germination media (PGM) ... -
Combining ability for resistance to soybean rust in F2 and F3 soybean populations
(Elsevier, 2012-01-18)The impact of soybean rust (Phakopsora pachyrhizi) on soybean yields has been extensively studied. How- ever, few studies have evaluated early generation segregating material under field conditions for soybean rust resistance ... -
A comparison of the effects of the nematodes Radopholus similis and Pratylenchus goodeyi on growth, root health and yield of an East African highland cooking banana (Musa AAA-group)
(Taylor & Francis, 2003-07)The effects of Radopholus similis and Pratylenchus goodeyi on growth, root health and yield of the East African highland cooking banana cultivar Mbwazirume (Musa AAA-group) were compared at Mbarara, Uganda, at ... -
Early screening of cassava for resistance to root-knot nematodes
(Organization of Tropical American Nematologists, 1997)A method was developed for early screening of cassava for resistance to root-knot nematodes. One node cassava cuttings were planted in plastic disposable beverage cups filled with sterile 1:1 (by volume) sand-soil ... -
Early Withering of Enlarged Ovules in Pollinated Fruits of Bananas (Musa spp.) Suggest Abortion after Fertilization
(Horticulturae, 2022-05-10)Sterility in edible bananas is as a result of a long history of anthropogenic-driven selection for sterile genotypes, since seed is not desirable in fruit pulp for human consumption. However, this poses a challenge to ... -
Entomologists’ Utilization of Electronic Information Resources at Makerere University, and National Agricultural Research Organization, Uganda
(Scientific Research Initiative, 2020-07)The concept of electronic resources had tremendously been adopted by most societies due to its associated value. Technology advancement has been a major driving force for this dynamic shift of access to information. Such ... -
Factors influencing reversion from virus infection in sweetpotato
(John Wiley & Sons, Inc, 2019-11-06)Viruses limit sweetpotato (Ipomoea batatas) production worldwide. Many sweetpotato landraces in East Africa are, however, largely virus-free. Moreover, some plants infected by the prevalent Sweet potato feathery mottle ... -
Genetic diversity and population structure of Uganda’s yam (Dioscorea spp.) genetic resource based on DArTseq
(Public Library of Science, 2023-02-14)Assessing the genetic diversity of yam germplasm from different geographical origins for cultivation and breeding purposes is an essential step for crop genetic resource conservation and genetic improvement, especially ... -
Genotype-by-environment interaction of yam (Dioscorea species) for yam mosaic virus resistance, dry matter content and yield in Uganda
(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 ... -
Glucose performs better than fructose, sucrose, and diluted nectar for germination of banana pollen
(2020)Poor stigma receptivity is one of the limitations to seed set in East African Highland Bananas (EAHBs) that constrains their improvement through conventional breeding. This study aimed at identifying a suitable pollen ... -
Morphological and agronomic traits variations for Mungbean variety selection and improvement in Uganda
(African Crop Science Journal, 2014)Mungbean (Vigna radiata L. Wilczek), is a pulse species that is widely cultivated in sub-tropical and tropical regions of the world. Unfortunately, the yield of mungbean in Uganda is very low mainly due to inherent genotype ... -
Nematode 18S rRNA gene is a reliable tool for environmental biosafety assessment of transgenic banana in confined field trials
(Springer, 2013-10)Abstract Information on relatedness in nematodes is commonly obtained by DNA sequencing of the ribosomal internal transcribed spacer region. How- ever, the level of diversity at this locus is often insufficient for ... -
Phenotypic diversity within Ugandan yam (Dioscorea species) germplasm collection
(Hindawi, 2022-12-19)A proper understanding of the diversity of the available germplasm is an initial step for the genetic improvement of a crop through breeding. However, there is limited information on the diversity of Uganda’s yam germplasm. ... -
Plant parasitic nematodes associated with banana and plantain in Eastern and Western Democratic Republic of Congo
(2013-01-20)Plant-parasitic nematode incidence, population densities and associated damage were determined from 153 smallholder banana and plantain gardens in Bas Congo (9 – 646 meters above sea level, m.a.s.l) and South Kivu ... -
Promising and failed breeding techniques for overcoming sterility and increasing seed set in bananas (Musa spp.)
(Horticulturae, 2024)Most banana improvement programs are restricted to using a sub-set of edible landraces for sexual hybridization as the majority are female sterile. This results from an array of factors that work in tandem and lead to ... -
Resistance to the weevils Cylas puncticollis and Cylas brunneus conferred by sweetpotato root surface compounds
(Journal of Agricultural and Food Chemistry, 2013-08-01)Seven resistant varieties of sweetpotato were compared with three susceptible varieties in field trials and laboratory bioassays and showed that resistance was an active process rather than an escape mechanism, as field ... -
Seed Set Patterns in East African Highland Cooking Bananas Are Dependent on Weather before, during and after Pollination
(MDPI, 2021-06-29)Seed set in banana is influenced by weather, yet the key weather attributes and the critical period of influence are unknown. We therefore investigated the influence of weather during floral development for a better ... -
Seed Set Patterns in East African Highland Cooking Bananas Show Asymmetric Distribution in Bunches and Fruits
(Agronomy, 2021-04-14)Low female fertility in bananas is the biggest hurdle for banana breeding. The aim of this study was to determine seed set patterns in East African Highland Cooking bananas (EAHBs) to inform future decisions on a more ... -
Silencing of the Mitogen-Activated Protein Kinases (MAPK) Fus3 and Slt2 in Pseudocercospora fijiensis reduces growth and virulence on host plants
(Frontiers in Plant Science, 2018-03-13)Pseudocercospora fijiensis, causal agent of the black Sigatoka disease (BSD) of Musa spp., has spread globally since its discovery in Fiji 1963 to all the banana and plantain growing areas across the globe. It is becoming ...