Selección de líneas avanzadas de cebada (Hordeum vulgare L.) con calidad maltera, en base al rendimiento y calidad

Abstract

Barley (Hordeum vulgare L.) is a highly important cereal in the Ecuadorian highlands; it is used for human and animal feed and malt production for the brewing industry. In order to a barley genotype to be considered a malting variety, it must meet various quality standards, for which the University of Cuenca in collaboration with the National Institute for Agricultural Research (INIAP) carried out this research in order to evaluate genotypes that meet these parameters and select advanced barley lines with malting quality, based on performance and bromatology. This study was carried out in Azuay province, Gualaceo canton, Bullcay sector, Austro Experimental Station - INIAP where they evaluated 36 barley lines and within these 4 control varieties (INIAP SHYRI89, INIAP SHYRI2000, SCARLETT y METCALF) considering the following variables: emergence percentage, vigor and growth habit of the plant, days to heading, tolerance levels and attack percentage of Puccinia Striiformis and Puccinia hordei on the leaf, plant height, type of straw, type of grain (size, shape, color), yield and malting quality. A DBCA with three repetitions was used. The results allowed identifying barley lines with potential for malt, obtaining yields higher than the national average, which is 4 ton/ha and accomplishing with the protein parameters that range between 9 and 12%, identifying the following elite lines: 13WA146. 1 with a yield of 5.24 ton/ha with protein of 11% and 11WA105.12 with a yield of 4.73 ton/ha and with protein of 11.30%.