Document Type : Original Article
Authors
1
Department of Breed. and Genetic, sugar Crops Research Institut, ARC, El-Sabhieya, Alex., Egypt
2
Department of Physiology and Biochemistry, sugar Crops Research Institut, ARC, Giza, Egypt
Abstract
The objective of this study was to investigate the influence of the interaction of genotype and environment on the agronomic and technological traits of sweet sorghum. Fifteen sweet sorghum (Sorghum bicolor L.Moench) varieties were grown in two locations El Giza (30.01 N latitude) and Alexandria (31°, 12N latitude) over two consecutive years (2020 and 2021). Variability in climatic growing conditions between environments affects the studied traits. As a result, genetic (G), environmental (E), year (Y) and their interactions significantly affected the majority of studied traits. Within the studied variety, ‘Brands’ had significantly greater mean values than other varieties in seven of the measured traits (stalk diameter, ethanol yield, syrup yield, sucrose%, reducing sugar%, fermentable sugar%, and syrup% ) and ‘Umbrella’ had the highest stalk yield, juice yield, ethanol yield, juice extraction%, Brix % and purity% mean values in El Giza while in Alexandria ‘M N8311’ had significantly higher mean value in seven of thirteen traits (plant height, juice yield, ethanol yield, Brix%, reducing sugar%, juice extraction and syrup%) and ‘GK Ahron’ had greater stalk diameter, stalk yield, juice yield, syrup yield and syrup% than those observed in other varieties. MN83-11 and SS301-1 had significantly higher mean values than other varieties in plant height at El Giza and Alexandria. Also, SS301-1 and Tracy recorded higher stalk diameters as compared to other varieties.In addition MN1500, MN83-11 and Umbrella recorded higher mean values of Brix% in both environments. As a result, we identified eight strong positive pairwise correlations and fifteen moderately positive correlated traits.
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