Analysis on some qualitative traits of Bulgarian triticale cultivars | Analysis on some qualitative traits of Bulgarian triticale cultivars

anglais. In order to identify the triticale genotypes, which combine high productivity with qualitative traits, eleven Bulgarian cultivars were studied during three contrasting periods. Protein content in grain, lysine content and protein yield were assessed. Based on the suggested biplot method, the genotypes were determined, which were characterized by values of protein and lysine content above the average of the studied set of cultivars. A 3D-method is suggested for determining of the best combinations of yield with protein and lysine content. The obtained results showed that the variation of the protein content, averaged for the period of study, was comparatively low – between 10.16 and 11.58 %. Between the separate growing periods, however, significant differences were observed – from 8.06 to 12.83 %. With regard to lysine content, a rather different tendency was observed. The world standard Presto was with the lowest values, and Atila – with the highest. No significant correlation was found between protein content and grain yield and between lysine content and grain yield. The best combination of protein content with grain yield was observed in cultivars Vihren, Rakita, Atila and Bumerang. A good combination of grain yield with lysine content was registered only in cultivars Atila and Bumerang. In cultivar Atila, the best combination of yield, protein content and lysine content was found. Such results showed that cultivars Atila and Bumerang were valuable initial material for improvement of the protein and lysine content in the breeding program of triticale in Bulgaria.

bulgare. In order to identify the triticale genotypes, which combine high productivity with qualitative traits, eleven Bulgarian cultivars were studied during three contrasting periods. Protein content in grain, lysine content and protein yield were assessed. Based on the suggested biplot method, the genotypes were determined, which were characterized by values of protein and lysine content above the average of the studied set of cultivars. A 3D-method is suggested for determining of the best combinations of yield with protein and lysine content. The obtained results showed that the variation of the protein content, averaged for the period of study, was comparatively low – between 10.16 and 11.58 %. Between the separate growing periods, however, significant differences were observed – from 8.06 to 12.83 %. With regard to lysine content, a rather different tendency was observed. The world standard Presto was with the lowest values, and Atila – with the highest. No significant correlation was found between protein content and grain yield and between lysine content and grain yield. The best combination of protein content with grain yield was observed in cultivars Vihren, Rakita, Atila and Bumerang. A good combination of grain yield with lysine content was registered only in cultivars Atila and Bumerang. In cultivar Atila, the best combination of yield, protein content and lysine content was found. Such results showed that cultivars Atila and Bumerang were valuable initial material for improvement of the protein and lysine content in the breeding program of triticale in Bulgaria.