Original scientific paper
Agronomic and Quality Traits of Winter Barley Varieties (Hordeum vulgare L.) under Growing Conditions in Croatia
Alojzije Lalić
; Agricultural Institute Osijek, Juzno predgradje 17, HR-31000 Osijek, Croatia
Josip Kovačević
; Agricultural Institute Osijek, Juzno predgradje 17, HR-31000 Osijek, Croatia
Dario Novoselović
; Agricultural Institute Osijek, Juzno predgradje 17, HR-31000 Osijek, Croatia
Gordana Šimić
; Agricultural Institute Osijek, Juzno predgradje 17, HR-31000 Osijek, Croatia
Ivan Abičić
; Agricultural Institute Osijek, Juzno predgradje 17, HR-31000 Osijek, Croatia
Vlado Guberac
; University J. J. Strossmayer in Osijek, Faculty of Agriculture, Trg Svetog Trojstva 3, HR-31000 Osijek, Croatia
Abstract
This paper presents an investigation of the agronomic and quality traits of the barley varieties, their stability and adaptability and specific reactions towards growing conditions in the Republic of Croatia. During four year trials on localities in Tovarnik, Nova Gradiska, Pozega and Osijek we researched 14 winter barley varieties. Interaction effect variety*environment has been explored together with estimation of significant parameters of stability towards grain yield, hectoliter weight, protein and starch content. With usage of cluster analysis it was possible to group varieties considering genotype x environment interaction (GEI). Impact of year, location and variety on grain yield, hectoliter grain weight, protein and starch content has been estimated by analysis of variance. There was no significant difference between two different sowing rates (300 and 450 grains/ m2) for grain yield, hectoliter weight and protein content. There also was no significant interaction of variety*sowing rate for all researched parameters.
Parameters of stability and achieved grain yield show that under favorable growing conditions one can expect better results of varieties ‘Trenk’ and ‘Princ’ with lower stability and variety Barun with higher stability of grain yield. Stability parameters point out varieties ‘Vanessa’, ‘Plaisant’, ‘Favorit’ and ‘Zlatko’ to have auspicious reaction to grain yield under extensive cultivation conditions but with significantly different levels of grain yield achieved. Cluster analysis for grain yield of the highest clustering similarity level displays five variety groups and variety Princ that does not show tendency to group with none of the other varieties. The first group is made by varieties ‘Barun’, ‘Zlatko’ and ‘Rex’. The second one consists of varieties ‘Prometej’ and ‘Gvozd’ with ‘Bingo’ and ‘Sladoran’. ‘Tiffany’ and ‘Vanessa’ make special, somewhat detached group of varieties that tend to group together with varieties ‘Favorit’, ‘Trenk’, ‘Plaisant’ and ‘Lord’ but on the lower grouping level.
Keywords
barley; variety; grain yield; grain quality; stability parameters; cluster analysis
Hrčak ID:
48516
URI
Publication date:
21.12.2009.
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