Interrelationship between yield, oil content and vegetation period duration on protein content in new soybean varieties' seeds

Abstract

During 2002 and 2003, a study was carried out to determine the effects of yield, oil content, and growing season duration on protein content in new soybean varieties' seeds. In both years, high negative correlations were found between protein content and the other traits under investigation. Path coefficient analysis showed that only oil content had a significant direct effect on protein content. Our findings have shown that despite its high heritability, protein content exhibited a strong interrelationship with other traits, primarily oil content.

Tokom 2002. i 2003. godine sprovedena su istraživanja sa ciljem utvrđivanja međuzavisnosti prinosa, sadržaja ulja i dužine trajanja vegetacionog perioda na sadržaj proteina u zrnu novih sorti soje. U obe godine istraživanja ustanovljene su visoke negativne korelacije sadržaja proteina sa drugim ispitivanim svojstvima. Path koeficijent analizom utvrđeno je da značajan direktan efekat na sadržaj proteina ima samo sadržaj ulja. Rezultati istraživanja ukazuju da sadržaj proteina u zrnu soje uprkos visokoj heritabilnosti, pokazuje izraženu međuzavisnost u odnosu na druga svojstva i to prvenstveno na sadržaj ulja.