Results 1 to 10 of about 102 (80)

Breeding Cultivars for Resistance to the African Sweetpotato Weevils, Cylas puncticollis and Cylas brunneus, in Uganda: A Review of the Current Progress [PDF]

Insects, 2023
In sub-Saharan Africa, sweetpotato weevils are the major pests of cultivated sweetpotato, causing estimated losses of between 60% and 100%, primarily during dry spells. The predominantly cryptic feeding behavior of Cylas spp.
Benard Yada, Paul Musana, Doreen M. Chelangat, Florence Osaru, Milton O. Anyanga, Arnold Katungisa, Bonny M. Oloka, Reuben T. Ssali, Immaculate Mugisa   +8 more
doaj   +2 more sources

The Independent Biological Activity of Bacillus thuringiensis Cry23Aa Protein Against Cylas puncticollis [PDF]

Frontiers in Microbiology, 2020
The Cry23Aa/Cry37Aa proteins from Bacillus thuringiensis (Bt) have been described toxic to Cylas puncticollis larvae. In general, it is believed that Cry23Aa and Cry37Aa act jointly to exert the insecticidal activity, while there is no evidence of their ...
Patricia Hernández-Martínez, Ayda Khorramnejad, Ayda Khorramnejad, Katterine Prentice, Ascensión Andrés-Garrido, Natalia Mara Vera-Velasco, Guy Smagghe, Baltasar Escriche   +7 more
doaj   +2 more sources

Transcriptome analysis and systemic RNAi response in the African sweetpotato weevil (Cylas puncticollis, Coleoptera, Brentidae). [PDF]

PLoS ONE, 2015
The African sweetpotato weevil (SPW) Cylas puncticollis Boheman is one of the most important constraints of sweetpotato production in Sub-Saharan Africa and yet is largely an uncharacterized insect pest.
Katterinne Prentice, Ine Pertry, Olivier Christiaens, Lander Bauters, Ana Bailey, Chuck Niblett, Marc Ghislain, Godelieve Gheysen, Guy Smagghe   +8 more
doaj   +2 more sources

Segregation of Hydroxycinnamic Acid Esters Mediating Sweetpotato Weevil Resistance in Storage Roots of Sweetpotato [PDF]

Frontiers in Plant Science, 2017
Resistance to sweetpotato weevils (Cylas spp.) has been identified in several sweetpotato (Ipomoea batatas) landraces from East Africa and shown to be conferred by hydroxycinnamic acids that occur on the surface of storage roots.
Milton O. Anyanga, Milton O. Anyanga, Benard Yada, Benard Yada, G. C. Yencho, Gorrettie N. Ssemakula, Agnes Alajo, Dudley I. Farman, Robert O. M. Mwanga, Philip C. Stevenson, Philip C. Stevenson   +10 more
doaj   +2 more sources

Shared binding sites for the Bacillus thuringiensis proteins Cry3Bb, Cry3Ca, and Cry7Aa in the African sweet potato pest Cylas puncticollis (Brentidae). [PDF]

Applied and Environmental Microbiology, 2014
Juan Ferré, Marc Ghislain, María Martínez-Solís   +2 more
exaly   +2 more sources

Laboratory and Greenhouse Evaluation of Melia volkensii Extracts for Potency against African Sweet Potato Weevil, Cylas puncticollis, and Fall Armyworm, Spodoptera frugiperda

Agronomy, 2021
The African sweet potato weevil, Cylas puncticollis, and fall armyworm, Spodoptera frugiperda, are insect pests of economic importance that have a negative impact on sweet potato and maize production, respectively. In this study, we aimed to evaluate the
Victor Jaoko, Clauvis Nji Tizi Taning, Simon Backx, Pierfrancesco Motti, Jackson Mulatya, Jan Vandenabeele, Titus Magomere, Florence Olubayo, Sven Mangelinckx, Stefaan P. O. Werbrouck, Guy Smagghe   +10 more
doaj   +1 more source

Identification of the key morphological sweetpotato weevil resistance predictors in Ugandan sweetpotato genotypes using correlation and path‐coefficient analysis

Crop Science, Volume 63, Issue 3, Page 1126-1138, May/June 2023., 2023
Abstract Sweetpotato weevils (SPWs) can cause up to 100% yield losses in sweetpotato (Ipomoea batatas). Nevertheless, there has been limited success in breeding for SPW resistance globally. This is attributed partly to difficulty in screening for resistance because resistance to the SPW is complex and is mediated by several resistance indicators ...
Florence Osaru, Jeninah Karungi, Roy Odama, Doreen Murenju Chelangat, Paul Musana, Milton Anyanga Otema, Bonny Oloka, Paul Gibson, Richard Edema, Reuben Tendo Ssali, George Craig Yencho, Benard Yada   +11 more
wiley   +1 more source

Sweetpotato weevil pheromones and their precursors: Dose-response and structure-activity relationship in Cylas formicarius Fabr., Cylas brunneus Olivier and Cylas puncticollis Boheman

Annals of Tropical Research, 2009
Structure-activity and species specificity of the three synthetic sweetpotato weevil pheromones, (Z)-3-dodecenyl-(E)-2-butenoate of C. formicarius, dodecenyl-(E)-2-butenoate of C. brunneus and decyl-(E)-2-butenoate C.
Erlinda A. Vasquez, Dietmar Schmidt, Claus Peter Zebitz, Uwe Beifuss, Iris Klaibe, Jurgen Krosche, Remberto Patindo   +6 more
doaj   +1 more source

Sweet Potato Value Chain Analysis Reveals Opportunities for Increased Income and Food Security in Northern Ghana

Advances in Agriculture, Volume 2017, Issue 1, 2017., 2017
Sweet potato has gained prominence due to its ability to adapt to wide production ecologies and yield response to minimal external inputs. Orange‐fleshed cultivars in particular have immense potential to improve household income and nutrition in sub‐Saharan Africa.
Issah Sugri, Bonaventure Kissinger Maalekuu, Eli Gaveh, Francis Kusi, Innocenzo Muzzalupo   +4 more
wiley   +1 more source

An Insight into Sweet Potato Weevils Management: A Review

Psyche: A Journal of Entomology, Volume 2015, Issue 1, 2015., 2015
Sweet potato is an important food crop that is grown widely in tropical and subtropical regions. Sweet potato weevil is the most disastrous pest affecting sweet potato plantations, causing millions of dollars losses annually. An effective integrated pest management (IPM) method will help to prevent economic losses, and it is crucial to understand the ...
Seow-Mun Hue, Min-Yang Low, Nguya K. Maniania   +2 more
wiley   +1 more source