Stability of Protein and Oil Content in Soybean across Dry and Normal Environments—A Case Study in Croatia

Agronomy

Marko Maričević¹  Domagoj Stepinac¹  Ivan Varnica²  Aleksandra Sudarić³  Ivan Pejić⁴  Hrvoje Šarčević⁴  Jerko Gunjača⁴  Zoe Andrijanić⁴  Dario Iljkić⁵  Mirta Rastija⁵  Sara Godena⁶ 

[1] Bc Institute for Breeding and Production of Field Crops, Dugoselska 7, 10370 Dugo Selo, Croatia;Centre for Seed and Seedlings Based in Osijek, Croatian Agency for Agriculture and Food, Usorska 19, 31000 Osijek, Croatia;Centre of Excellence for Biodiversity and Molecular Plant Breeding (CroP-BioDiv), Svetošimunska Cesta 25, 10000 Zagreb, Croatia;Faculty of Agriculture, University of Zagreb, Svetošimunska cesta 25, 10000 Zagreb, Croatia;Faculty of Agrobiotechnical Sciences Osijek, University of Josip Juraj Strossmayer in Osijek, Vladimira Preloga 1, 31000 Osijek, Croatia;Institute of Agriculture and Tourism, Karla Huguesa 8, 52440 Porec, Croatia;

关键词: soybean;    genotype;    stability;    drought;    seed quality;   

DOI  :  10.3390/agronomy12040915

来源: DOAJ

【 摘 要 】

Soybean is generally grown as a rainfed crop worldwide and very often is exposed to drought and high temperatures. The objectives of this study were to determine the performance and stability of 32 elite soybean genotypes for seed protein and oil contents across six dry and eight normal environments and to determine the influence of environment on the relationship between the two traits. In the combined ANOVA, genotypes (G), environments (E) and G × E were significant for both traits with protein content being more sensitive to environmental changes than oil content. Mean seed protein content decreased by 4.5% under drought conditions compared to normal ones and ranged from 2.3% to 7.1% for individual genotypes. At the same time drought caused a slight increase in seed oil content of +1.2%, with a range of −1.3% to +4.5% for individual genotypes. Genotype stability in terms of regression coefficient (b) and coefficient of variation (CV) was in moderate to weak negative correlation with mean genotype performance for protein content, while no correlation was observed between genotype stability and mean genotype performance for oil content. Protein and oil content were significantly negatively correlated in normal environments (r = −0.33), while no correlation between the traits was observed in dry environments (r = −0.02).

【 授权许可】

Unknown