Effect of genotype x environment interaction on wheat dough energy

Abstract

Dough energy of twenty Serbian winter wheat cultivars was analysed during three years at five locations. The highest mean value was with cultivar NSR-5, and the lowest with cultivar Bistrica. A highly significant difference was determined among the analysed cultivars, years and locations. AMMI model was used for analysis of genotype x environment interaction. A significant difference among genotypes in the main effect was observed based on AMMI analysis, and much less in interaction. The most stable cultivar was Tera with value above average, while cultivar Pesma had satisfactory stability and high average value for the analysed trait. Location Kragujevac had the most stable agro-ecological conditions and consequently the most stable cultivars at the level of general average of the trial, while location Žitorađa had adverse conditions for analysis of this trait.

Kod dvadeset sorti ozime pšenice iz Srbije analizirana je energija testa u trogodišnjem periodu na pet lokaliteta. Najveću prosečnu vrednost ostvarila je sorta NSR-5, a najmanju sorta Bistrica. Između ispitivanih sorti, godina i lokaliteta utvrđena je visoko značajna razlika. Za analizu interakcije genotip x spoljna sredina primenjen je AMMI model. Uočena je značajna razlika između genotipova u glavnom efektu, a znatno manje u interakciji. Kao najstabilnija sorta sa vrednošću iznad proseka izdvojena je Tera, dok je sorta Pesma ostvarila zadovoljavajuću stabilnost i visoku prosečnu vrednost za analizirano svojstvo. Nasuprot lokalitetu Kragujevac, gde su agroekološki uslovi doprineli najstabilnijem ponašanju sorti na nivou opšteg proseka ogleda, lokalitet Žitorađa se pokazao nepovoljnim za ispitivanje ovog svojstva.