[Phenotypic stability of some in malting barley]
1998
Przulj, N. | Momcilovic, V. | Mladenov, N. (Naucni institut za ratarstvo i povrtarstvo, Novi Sad (Yugoslavia))
Yield, lodging, 1000-kernel weight, hectoliter mass, grain protein content, and malt fine extract content in 10 spring malting barley genotypes have been analyzed. The importance of the variety x year interaction for the grain protein and malt fine extract contents has been additionally determined by means of the regression coefficient and the deviation from regression as parameters of stability. The interrelationship between the traits under investigation and the regression coefficients was determined using the coefficient of corellation. Grain yield, 1000-kernel weight, hectoliter mass, and grain protein content were for the most part dependent on the genotype, while lodging and malt fine extract content dependent the most on the year. Using the coefficient of regression, genotypes have divided into three groups: (I) those that had the highest protein and malt fine extract contents under highly favourable conditions; (II) those that proved adaptable to less favourable growing conditions, and (III) those whose traits were shown to be stable under different growing conditions. A significant correlation was found between yield and the coefficient of regression for malt fine extract content.
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