BOTANY

Detailed explanation-1: -Cassava mosaic virus is a member of the geminiviruses family and is transmitted in a persistent manner; whitefly adults feed on infected plants for more than a couple of minutes, sometimes hours. After the uptake, the virus has to circulate in the adult whitefly before it can infect healthy plants.

Detailed explanation-2: -Cassava mosaic geminiviruses are principally transmitted by whitefly (order Hemiptera, family Aleyrodidae), which move the virus from plant to plant within a field as well as among nearby fields.

Detailed explanation-3: -Cassava mosaic disease (CMD) is caused by whiteflyborne viruses of the genus Begomovirus (family Geminiviridae).

Detailed explanation-4: -Of major concern, causing large and increasing economic impact in Africa and Asia are the cassava mosaic geminiviruses that cause cassava mosaic disease in Africa and Asia and cassava brown streak viruses causing cassava brown streak disease in Africa.