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16 results on '"Tushemereirwe, Wilberforce K."'

9. ‘NABIO808’ (Syn. ‘NAROBAN5’): A tasty cooking banana cultivar with resistance to pests and diseases

Author

Tumuhimbise, Robooni, primary, Buregyeya, Henry, additional, Kubiriba, Jerome, additional, Tushemereirwe, Wilberforce K., additional, Barekye, Alex, additional, Tendo, Reuben S., additional, Namagembe, Betty, additional, Muhangi, Sedrach, additional, Kazigye, Francis, additional, Talengera, David, additional, Tindamanyire, Jimmy, additional, Akankwasa, Kenneth, additional, Nabulya, Gertrude, additional, Namaganda, Josephine, additional, William, Waswa, additional, Kushaba, Abias, additional, Namuddu, Mary, additional, Oyesigye, Naboth, additional, Namanya, Priver, additional, Arinaitwe, Ivan K., additional, Waniale, Allan, additional, Karamura, Deborah, additional, and Karamura, Eldad, additional

Published
2019
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11. ‘Kiwangaazi’ (syn ‘KABANA 6H’) Black Sigatoka Nematode and Banana Weevil Tolerant ‘Matooke’ Hybrid Banana Released in Uganda

Author

Nowakunda, Kephas, primary, Barekye, Alex, additional, Ssali, Reuben T., additional, Namaganda, Josephine, additional, Tushemereirwe, Wilberforce K., additional, Nabulya, Gertrude, additional, Erima, Rockefeller, additional, Akankwasa, Kenneth, additional, Hilman, Edison, additional, Batte, Micheal, additional, and Karamura, Deborah, additional

Published
2015
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13. An economic assessment of banana genetic improvement and innovation in the Lake Victoria Region of Uganda and Tanzania

Author

Tushemereirwe, Wilberforce K.

Subjects
Research and Development/Tech Change/Emerging Technologies, Genetic engineering, Economic aspects, food and beverages, Uganda, Bananas, Crop Production/Industries, Tanzania, Bananas, Genetically modified foods, Nutrition, Genetic engineering, Economic impacts
Abstract

This research report highlights the findings from a set of studies undertaken by the International Food Policy Research Institute, along with several national and international research institutions, to assess the economic impact of improved cultivars and management practices on smallholder farmers in the Lake Victoria Region of Uganda and Tanzania— an area where the cooking banana is both economically and culturally important. Genetic transformation is a promising alternative for improving the resistance of banana plants to the pests and diseases that cause serious economic losses, because bananas, unlike rice, wheat, and maize, are difficult to improve through conventional breeding techniques. The team of researchers posed three broad questions: What is the current level of adoption of improved cultivars and management practices, given the constraints to banana production and marketing? What are the prospects that banana growers will adopt cultivars with transgenic resistance to pests and diseases, given existing constraints? What is the potential impact on the banana industry of a range of genetic technologies now under development by national researchers? Findings confirm that smallholder farmers value the crop traits targeted for introduction by current bioengineering efforts, and that transgenic bananas have the potential to benefit the poor. The focal role of farmers in developing and promoting planting material systems and the influence of social capital on technology adoption are both demonstrated by the baseline data, with implications for the design of extension systems. The research summarized in this report is new in several respects. First, it documents the uptake of newly released banana hybrids and other recommended banana practices on semisubsistence smallholder farms in East Africa. Second, a complete taxonomy of distinct banana cultivars grown in the region has been developed. Third, the research puts existing knowledge into perspective with advanced social science methods. The findings and recommendations resulting from this study will be useful for policy decisions in the region, contributing initially to technological development and dissemination, and ultimately to increased crop productivity.

Published
2007

16. In vitro antifungal activity of synthetic dsRNA molecules against two pathogens of banana, Fusarium oxysporum f. sp. cubense and Mycosphaerella fijiensis.

Author

Mumbanza, Francis M, Kiggundu, Andrew, Tusiime, Geoffrey, Tushemereirwe, Wilberforce K, Niblett, Chuck, and Bailey, Anna

Subjects
ANTIFUNGAL agents, DOUBLE-stranded RNA, BANANAS, FUSARIUM oxysporum, MYCOSPHAERELLA, PLANT protection, DNA polymerases
Abstract

BACKGROUND A key challenge for designing RNAi-based crop protection strategies is the identification of effective target genes in the pathogenic organism. In this study, in vitro antifungal activities of a set of synthetic double-stranded RNA molecules on spore germination of two major pathogenic fungi of banana, Fusarium oxysporum Schlecht f. sp. cubense WC Snyder & HN Hans (Foc) and Mycosphaerella fijiensis Morelet (Mf) were evaluated. RESULTS All the tested synthetic dsRNAs successfully triggered the silencing of target genes and displayed varying degrees of potential to inhibit spore germination of both tested banana pathogens. When Foc dsRNAs were applied to Foc spores, inhibition ranged from 79.8 to 93.0%, and from 19.9 to 57.8% when Foc dsRNAs were applied to Mf spores. However, when Mf dsRNAs were applied on Mf spores, inhibition ranged from 34.4 to 72.3%, and from 89.7 to 95.9% when Mf dsRNAs were applied to Foc spores. CONCLUSION The dsRNAs for adenylate cyclase, DNA polymerase alpha subunit and DNA polymerase delta subunit showed high levels of spore germination inhibition during both self- and cross-species tests, making them the most promising targets for RNA-mediated resistance in banana against these fungal pathogens. © 2013 Society of Chemical Industry [ABSTRACT FROM AUTHOR]

Published
2013
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