TY - JA AU - Singh,R.P. AU - Albarrán,M.A. AU - Burnett,P.A. AU - Rajaram,S. TI - Bdv1: A gene for tolerance to barley yellow dwarf virus in bread wheat SN - 1435-0653 PY - 1993/// KW - Barley yellow dwarf virus KW - Disease resistance KW - AGROVOC KW - Genetic engineering KW - Rusts KW - Triticum aestivum N1 - Peer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=0011-183X N2 - Barley yellow dwarf luteovirus (BYDV) is the most economically important and widespread virus disease of small grain cereals in the world. The North American bread wheat (Triticum aestivum) cv. Anza and several other CIMMYT wheats have shown tolerance of BYDV. Anza and nine other tolerant wheats were intercrossed and crossed with the susceptible wheats Bobwhite and/or Bagula. Parents and the F1 and F2 generations were tested during 1990 in the field near Toluca (Mexico) with the MAV-Mex serotype of BYDV. Some 72 individual F2-derived F3 lines from each cross were classified in the field during 1991, together with the parents and F1s, with the same serotype. The intercrosses among tolerant parents failed to segregate, and the observed distribution of F3 lines in the crosses of tolerant and susceptible wheats was in accordance with a monogenic segregation ratio. It is concluded that tolerance in these wheats is due to a common, partially effective and partially dominant gene, designated Bdv1. Bdv1 could have originated in the Brazilian cultivar Frontana and should be considered a durable source, because of its deployment in numerous CIMMYT wheats worldwide T2 - Crop Science ER -