Variability of protein and oil content in soybean genotypes from MRIZP collection

Abstract

Seed protein and oil content ate two main seed quality traits in soybean. Numerous studies confirm negative correlation between seed protein and oil concentration. Short season soybean varieties have higher protein concentration, while late cultivars have better oil content. The objective of this study was to evaluate 135 soybean accessions different maturity groups (00,0,L0,1) on the basis of their protein and oil concentration and to identify the genotypes with the best protein: oil ratio within each group. The accessions from soybean collection of the Maize Research Institute Zemun Polje (MRIZP) were analyzed for protein and oil content with a NIR spectroscopy. Cluster analysis using combined data of two traits was performed for genotypes of each maturity group. Categories of genotypes based on protein (low protein-LP, medium protein-MP, high protein-HP) and oil content (ow oil-LO, medium oil-MO, high oil-HO) were identified. Proportion of categories differed among groups. The majority of HPHO vatieties were found in maturity groups 00 and 0 (5 and 3 cultivars, respectfully).