Conventional breeding for resistance to Bemisia tabaci-transmitted geminivirusesā˜† uri icon

abstract

  • The whitefly Bemisia tabaci Genn. is a pervasive pest and vector of plant viruses. The existence of B. tabaci biotypes and numerous whitefly-transmitted geminiviruses (begomoviruses) affecting food and industrial crops has become a major constraint to agricultural development in tropical and subtropical regions of the world. The predominant whitefly and begomovirus method of control has been the application of insecticides. The excessive use of agrochemicals over the past decades. has contributed to an exponential increase in B. tabaci populations and incidence of begomoviruses transmitted by this whitefly vector. Under these conditions, biological and integrated whitefly/geminivirus control practices have not met expectations. Incorporating begomovirus resistance in a relatively small number of crops improved by conventional plant breeding methods has been a sustainable and efficient disease control strategy. This review discusses some of the conventional intra- and interspecific hybridization strategies followed to incorporate genetic resistance to begomoviruses in three major crops: cassava, common bean and tomato. (C) 2001 Elsevier Science Ltd. All rights reserved.

publication date

  • 2001
  • 2001