author(s)
Archana Anokhe, B Mandal and S Subramanian

abstract
Whitefly, Bemisia tabaci (Genn.) believed to be originated from India has drawn global attention in recent past with its wide distribution across the world. It causes severe damage to crops directly by sucking the sap from plants and indirectly as vector of several viral diseases. The largest diversity of B. tabaci genetic groups is present in Asia with the distribution of about 16 out of 34 genetic groups reported so far in Asian countries whereas in India as many as nine genetic groups are reported, among which Asia I and Asia II-1 are two predominant genetic groups of B. tabaci distributed widely in different agro-climatic zones of India. The present investigation focuses on the characterizing the virus vector relationship between most prevalent begomoviruses viz., Mung bean yellow mosaic virus (MYMV) and two predominant vector genotypes, Asia I and Asia II-1. From the result it was observed that Asia I has shown significantly higher transmission efficiency i.e. 36.6% and 66.6% as compared to Asia II-1 23% and 56% when one and five whiteflies per plant per inoculation were used respectively. They have also shown significantly higher virus transmission efficiency at different acquisition and inoculation access periods as well. This study was conducted in the year of 2013-2015 in Insect proof climatic control chamber, Division of Entomology IARI, New Delhi – India.