Abstract
African Cassava Mosaic Virus (ACMV) is one of the major diseases affecting cassava production in Sub-Saharan Africa. A survey was conducted between August and September 2019 in the Federal Capital Territory (FCT), Niger and Benue states of the Guinea savannah vegetation zone of Nigeria, where cassava is predominantly cultivated, to assess the incidence and distribution of ACMV. Leaf samples collected from this survey were subjected to molecular indexing using Polymerase Chain Reaction (PCR). Further phylogenic analysis sequencing was done to determine the diversity among the isolates obtained from the study. A total of 81 farms were visited from where 2,025 symptomatic and asymptomatic leaf samples (25 leaf samples per farm) were collected randomly in quadrants of 5m x 5m. The surveyed fields were assessed for virus disease incidence and severity by visual observation. From the samples collected, FCT had the highest incidence (62%) while Benue had the lowest (18%). FCT also recorded the highest severity while Benue had the lowest. After molecular indexing using PCR, FCT recorded the highest incidence to ACMV (22.22%), while no ACMV incidence was recorded in Benue state. The sequencing and phylogenic analysis reveals that there is a high diversity among the isolates obtained in the areas surveyed. This study indicates the presence of ACMV in the Guinea Savannah vegetation zone of Nigeria and has confirmed that cassava Mosaic Disease could be a threat to cassava production in the zone, therefore, the need for quick diagnosis.
Highlights
Cassava (Manihot esculentus Crantz) is one of the leading staple foods in Nigeria
A survey was conducted between August and September 2019 covering all the major cassava-growing Local Government Areas (LGAs) of Kuje, Bwari and Kwali in Federal Capital Territory (FCT); Bida, Shiroro and Agaie in Niger state; and Markurdi, Gboko and Guma in Benue state of the guinea savannah ecological zone of Nigeria
There were different virus symptoms expressed on all the leaf samples collected, chlorotic mosaic was the most common symptom observed followed by mottling, leaf curling and distortion
Summary
Cassava (Manihot esculentus Crantz) is one of the leading staple foods in Nigeria. Cassava is a source of income and its production is vital to the economy of Nigeria as the country is the world's largest producer of the commodity; the crop is produced in 24 of the country's 36 states [2]. It is an important food security crop in Nigeria due to its increasing demand by the entire populace, as a result of the rapid population growth rate of the country [2]. Due to its high amylose and starch content it is used to produce high fructose syrup and glucose for beverage and in the pharmaceutical industries [3]
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
