Grain quality evaluation for feed barley breeding in Latvia. Summary of the Doctoral Thesis for the scientific degree Dr.agr. | Graudu kvalitātes izvērtējums lopbarības miežu selekcijai Latvijā. Promocijas darba kopsavilkums Dr.agr. zinātniskā grāda iegūšanai
2010
Bleidere, M., State Stende Inst. of Cereal Breeding, Dizstende, Talsu reg. (Latvia)
The study was carried out at the State Stende Cereal Breeding Institute from 2004 to 2008. The spring barley genotypes from the working collection and breeding material were analyzed. The aim of the study was to evaluate the grain quality traits of different spring barley genotypes so that the results could be applied to feed barley breeding in the agro-meteorological conditions of Latvia. The following tasks were carried out: to compare the grain quality between different types of spring barley from collection material according to physical and chemical traits; to determine the barley varieties of Latvian origin which correspond to the highest feed quality requirements; to clarify the effect of the genotype and the environment on the variation in barley grain quality; to evaluate the correlation between barley grain quality traits; to assess the barley grain quality traits for covered and hulless lines of F4 and F5 generation; Novelty of the research: variation in barley grain quality physical and chemical traits, their correlation and heritability was evaluated in the agro-meteorological conditions of Latvia; grain quality of different genotypes from barley collection and breeding material were deeply investigated, and their use for barley breeding feed direction was recommended; conformity of Latvian origin barley varieties with good quality feed grain production was specified; new barley grain quality testing methods were acquired and adapted: assessment of β-glucan content with the further use of data for calibration of automatic grain analyzer Infratec; protein electrophoresis method for assessment of hordein diversity thus making it possible to analyse the grain quality of breeding material in the early hybrid generations.
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