Stability of soybean seed composition

Abstract

Stability of protein and oil content of 13 soybean varieties were examined using linear model across seven locations and during six years. Due to heterogeneity of environments all year/locations was distributed in to two groups, based on achieved yield. Stability of protein content differed in the low and high yielding environments, while average values show only minor differences. In contrast, oil content stability was slightly changed in the low and high yielding environments, while the average oil content were significantly higher in the low yielding environments. Environmental factors influenced the correlation between oil and protein content in soybeans. Negative correlation between protein and oil content was observed only in the high yielding environments, while varieties in low yielding environments lack this well known inverse relation.

Ispitivanja stabilnosti hemijskog sastava zrna soje sprovedena su na 13 genotipova soje, šest lokaliteta, tokom šest godina, korišćenjem linearnog modela. Usled heterogenosti uslova uspevanja, svi lokaliteti/godine podeljeni su u dve grupe, u zavisnosti od prinosa. Stabilnost sadržaja proteina u semenu razlikovala se u zavisnosti od visine prinosa, dok kod prosečnih vrednosti nisu zabeležene veće razlike. Nasuprot tome, stabilnost sadržaja ulja u semenu nije se značajnije razlikovala u zavisnosti od prinosa, dok je prosečan sadržaj ulja bio veći na lokalitetima/godinama kada su zabeleženi niži prinosi soje. Uslovi spoljašnje sredine utiču na korelaciju između sadržaja ulja i proteina. Negativna korelacija između sadržaja ulja i proteina uočena je samo pri visokim prinosima, dok pri niskim prinosima ova negativna veza nije dobijena.