The aim of this investigation was to identify suitable parental lines of vetch (Vicia sativa spp.) from Turkish and ICARDA germplasm, with appropriate morphological and phenological characters, for generating low %w w-1 γ-L-Glutamyl-β-cyano-L alanine toxin cultivars, using infrared nitrile screening, dendrogram clustering, and Pearson correlations. | Turk J Agric For 31 (2007) 303-311 © TÜB‹TAK A Selection Strategy for Low Toxin Vetches (Vicia sativa spp.) Hüseyin Kansur FIRINCIO⁄LU1*, Max TATE2, Sabahaddin ÜNAL1, Levent DO⁄RUYOL3, ‹lhan ÖZCAN3 1 The Central Research Institute for the Field Crops, Department of Forage and Pasture, Ankara - TURKEY 2University of Adelaide, School of Agriculture, Discipline of Plant Science, Adelaide - AUSTRALIA 3General Directorate of Agriculture Production Development, Ankara - TURKEY Received: Abstract: The aim of this investigation was to identify suitable parental lines of vetch (Vicia sativa spp.) from Turkish and ICARDA germplasm, with appropriate morphological and phenological characters, for generating low %w w-1 γ-L-Glutamyl-β-cyano-L-alanine toxin cultivars, using infrared nitrile screening, dendrogram clustering, and Pearson correlations. A significant inverse relationship -1 between seed-mass and %w w γ-L-Glutamyl-β-cyano-L-alanine was observed in 13 semiprostrate lines of V. sativa. No corresponding seed-toxin, seed-mass relationship was observable in 41 lines of V. sativa subsp. sativa of erect habit. Accordingly, the possibilities for the incorporation of the low toxic compound in small-seeded semiprostrate V. sativa lines into larger seeded erect V. sativa lines, via a Mendelian crossing program, was investigated. The limitations to this conclusion are also discussed. Key Words: Vicia sativa, γ-L-Glutamyl-β-cyano-L-alanine, plant morphology-phenology, starch-dilution Düflük Toksinli Fi¤ (Vicia sativa spp.) Gelifltirilmesinde Bir Seleksiyon Stratejisi Özet: Bu araflt›rmada, düflük %w w-1 γ-L-Glutamyl-β-cyano-L-alanine toksik maddesine sahip çeflitler gelifltirmek için Türkiye ve ICARDA germplasm› içinden uygun morfolojik ve fenolojik özelliklere sahip ebeveyn hatlar›n belirlenmesi amaçlanm›flt›r. Bu çal›flmada, infrared nitrile taramas›, Pearson korelasyon ve dendogram kümeleme teknikleri kullan›lm›flt›r. V. sativa’n›n 13 yar› yat›k hatt›nda, %w w-1 .