VARIABILITY IN PHENOTYPIC EXPRESSION OF SEED QUALITY TRAITS IN SOYBEAN GERMPLASM

Cilj je ovog istraživanja bio procijeniti genetsku varijabilnost odabranih linija soje u svojstvima kvalitete zrna utvrđivanjem raznolikosti fenotipske ekspresije za masu 1000 zrna te koncentraciju bjelančevina i ulja u zrnu. Tijekom tri vegetacijske sezone (2010.-2012.), na Poljoprivrednom institutu Osijek postavljen je poljski pokus s 22 linije soje, u 2 ponavljanja po slučajnome bloknome rasporedu. Svake godine pokusa nakon žetve određena je masa 1000 zrna, koncentracija bjelančevina i koncentracija ulja u zrnu soje, a statistička obrada rezultata tih analiza uključivala je izračun standardnih mjera varijacije i analizu varijance. Nakon završene analize podataka, utvrđena je raznolikost istraživanoga biljnoga materijala u fenotipskoj ekspresiji svojstava kvalitete zrna, odnosno potvrđeno je postojanje genetske varijabilnosti uz statistički značajan utjecaj genotipa i godine.The aim of this research was to determine the genetic variability of chosen soybean lines in seed quality by determining diversity in phenotypic expression of 1000 seed weight, as well as protein and oil concentrations in the seed. Field trials were set up in a randomized, complete block design with two replications, at the Agricultural Institute Osijek during three growing seasons (2010-2012). Each year, after harvest, 1000 seed weight, and protein and oil concentrations in the seed were determined. Statistical analyses of the results included: calculating basic measures of variation and analysis of variance. The analyzed data showed the existence of plant material\u27s diversity in phenotypic expression of investigated seed quality traits, as well as the existence of statistically significant genotype and year effects