Results 101 to 110 of about 9,766 (222)

Resistance profile of improved cassava germplasm to cassava mosaic disease in Nigeria

Euphytica, 2006
Cassava mosaic disease (CMD) caused by a group of begomoviruses and transmitted by whitefly vector is a serious disease in all the cassava-growing areas of Africa. Field evaluation with replication was conducted in 2003 and 2004 in three agroecologies in Nigeria to study the response of 40 cassava genotypes to CMD and to investigate genotype ...
Egesi, Chiedozie N., Ogbe, F.O., Akoroda, M.O., Ilona, Paul, Dixon, A.   +4 more
openaire   +2 more sources

Estimating the Effective Population Size Across Space and Time in the Critically Endangered Western Chimpanzee in Guinea‐Bissau: Challenges and Implications for Conservation Management

Evolutionary Applications, Volume 18, Issue 10, October 2025.
ABSTRACT The western chimpanzee (Pan troglodytes verus) is a Critically Endangered taxon. In Guinea‐Bissau (GB), the subspecies is increasingly threatened, but there is a lack of understanding regarding the degree of genetic threat faced by populations.
Maria Joana Ferreira da Silva, Filipa Borges, Federica Gerini, Rui M. Sá, Francisco Silva, Tiago Maié, Germán Hernández‐Alonso, Jazmín Ramos‐Madrigal, Shyam Gopalakrishnan, Isa Aleixo‐Pais, Saidil Lamine Djaló, Nelson Fernandes, Idrissa Camará, Aissa Regalla, Catarina Casanova, Mafalda Costa, Ivo Colmonero‐Costeira, Carlos Rodríguez Fernandes, Lounès Chikhi, Tânia Minhós, Michael W. Bruford   +20 more
wiley   +1 more source

Occurrence and estimated losses caused by cassava brown streak disease in Migori county, Kenya [PDF]

, 2016
Cassava is the second most important staple crop after maize in Migori County. A farm survey was conducted in Kuria East and Suna West sub-counties to determine the incidence, severity and estimated losses of cassava brown streak disease (CBSD) on ...
Arama, Peter Futi, Hillocks, Rory, Maruthi, Midatharahally. N., Masinde, Emily Atieno, Mulwa, Richard M.S., Ogendo, Joshua Ondura   +5 more
core   +1 more source

CASSAVA MOSAIC DISEASE: INCIDENCE AND YIELD PERFORMANCE OF CASSAVA CULTIVARS IN ZAMBIA

Journal of Plant Pathology, 2017
Cassava is the main food crop for an estimated 30% of the population in Zambia where yields of 5.8 t/ha are some of the lowest of any major cassava-producing country. A study was conducted to characterize yield responses of Zambian cassava genotypes to cassava mosaic disease (CMD), as well as the relative susceptibilities to the causal viruses.
Tembo, M., Mataa, M., Legg, James P., Chikoti, Patrick Chiza, Ntawuruhunga, Pheneas   +4 more
openaire   +2 more sources

Molecular Diversity and Distribution of Whiteflies (Bemisia tabaci) in Cassava Fields Across South West and North Central, Nigeria

Insects
Whitefly Bemisia tabaci (Gennadium, Hemiptera) causes severe damage to cassava plants through excessive feeding on leaves and transmitting viruses, such as African cassava mosaic virus (ACMV), East African cassava mosaic virus (EACMV), and ipomoviruses ...
Oghenevwairhe P. Efekemo, Olabode A. Onile-ere, Isaac O. Abegunde, Folashade T. Otitolaye, Justin S. Pita, Titus Alicai, Angela O. Eni   +6 more
doaj   +1 more source

Optimisation of regeneration systems for a range of Cassava (Manihot Esculenta Crantz) cultivars suitable for growth in South Africa and transformation with SACMV N-REP gene [PDF]

, 2006
Faculty of Science School of Molecular and Cell Biology 9714718d MMakwarela@arc.agric.zaCassava (Manihot esculenta Crantz) is a vegetatively propagated root crop used as a staple throughout the tropics and subtropics. It is the fourth most important
Makwarela, Murunwa
core  

Molecular studies on the sweet potato virus disease and its two causal agents [PDF]

, 2002
The studies presented in this thesis contribute to an increased understanding of the molecular aspects, variability and interaction of the two most important viral pathogens of sweet potato (Ipomoea batatas L): Sweet potato feathery mottle virus (SPFMV ...
Kreuze, Jan
core  

Sensitivity analysis and optimal control for the dynamic mathematical model of cassava mosaic disease

AIP Advances
Cassava mosaic disease (CMD) is found in many countries around the world. This disease is caused by a mosaic virus carried by whitefly. It hurts the growth and yield of cassava, which in turn causes damage to farmers who grow cassava.
Sireepatch Sangsawang, Usa Humphries, Amir Khan, Puntani Pongsumpun   +3 more
doaj   +1 more source

Detection of Cassava Mosaic Disease and Assessment of Selected Agronomic Traits of Cassava (Manihot esculenta)

Horticulturae
A study was conducted in Sierra Leone to identify cassava plants that are asymptomatic and symptomatic to cassava mosaic disease (CMD) and collect planting materials for field trial establishment; determine the prevalence of CMD caused by African cassava
Musa Decius Saffa, Alusaine Edward Samura, Mohamed Alieu Bah, Angela Obiageli Eni, Ezechiel Bionimian Tibiri, Adama Sagnon, Fidèle Tiendrébéogo, Justin Simon Pita, Prince Emmanuel Norman, Raymonda Adeline Bernardette Johnson   +9 more
doaj   +1 more source

Phylogenetic Relationships among Whiteflies in the Bemisia tabaci (Gennadius) Species Complex from Major Cassava Growing Areas in Kenya

Insects, 2017
Whiteflies, Bemisia tabaci (Gennadius) are major insect pests that affect many crops such as cassava, tomato, beans, cotton, cucurbits, potato, sweet potato, and ornamental crops. Bemisia tabaci transmits viral diseases, namely cassava mosaic and cassava
Duke M. Manani, Elijah M. Ateka, Steven R. G. Nyanjom, Laura M. Boykin   +3 more
doaj   +1 more source