TY - NCL AU - Singh,R.P. AU - Alcala de Stefano,M. AU - Cardenas,F. AU - Pfeiffer,W.H. AU - Rajaram,S. TI - CIMMYT Results of the twentieth International Bread Wheat Screening Nursery (IBWSN) 1986-87 T2 - CIMMYT Results of the International Bread Wheat Screening Nursery (IBWSN) PY - 1989/// CY - Mexico, DF (Mexico) PB - CIMMYT, KW - Adaptation KW - Barley yellow dwarf virus KW - Disease resistance KW - AGROVOC KW - Flowering KW - Fusarium KW - Helminthosporium KW - Maturity KW - Pest resistance KW - Plant nurseries KW - Rusts KW - Selection KW - Septoria KW - Site factors KW - Trials KW - Viroses KW - Triticum aestivum KW - Wheat KW - Yields KW - Plant breeding N1 - Glossary in: English, Es, French, tables ER -