Occurrence and Distribution of Begomoviruses Infecting Cassava in Western Kenya

South West and North Central Nigeria: Assessment of cassava mosaic disease and field status of African cassava mosaic virus and East African cassava mosaic virus

“…ACMV was the predominant CMBs species found in both the NC and SW Zones of Nigeria as majority of CMD resulted from single ACMV infections. The predominance of single ACMV infection is similar to a previous country-wide survey conducted in Nigeria (Alabi et al, 2008;Ariyo et al, 2005;Ogbe et al, 2006) and to other studies in West Africa (Pita et al, 2001;Torkpo, Offei, Danquah, & Gafni, 2017 (Fondong et al, 2000;Pita et al, 2001) as EACMV is more largely predominant in East African countries as compared to West Africa (Chikoti et al, 2013;Chikoti, Mulenga, Tembo, & Sseruwagi, 2019;Neuenschwander, Hughes, Ogbe, Ngatse, & Legg, 2002;Were et al, 2016).…”

“…The low occurrence of EACMV in Nigeria is probably because EACMV has not been present in Nigeria as long as ACMV (Ogbe et al, 2006 Besides the presence of single ACMV and EACMV infection, ACMV occurred in mixed infections with EACMV. This is similar to previous studies conducted across West Africa (Ariyo et al, 2005;Fondong et al, 2000;Ogbe, Thottappilly, Dixon, Atiri, & Mignouna, 2003;Pita et al, 2001) and East Africa (Chikoti et al, 2013;Harimalala et al, 2015;Were et al, 2016). The percentage of mixed infection recorded in this study (< 7%) was lower than the percentage found in previous country-wide survey conducted in Nigeria in 1997-1998 (9.3%) and 2006 (24.1%) (Ogbe et al, 2006).…”