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AGRONOMIC PERFORMANCE OF GRAIN SORGHUM HYBRIDS (SORGHUM BICOLOR (L.) MOENCH) UNDER SEVERAL ENVIRONMENTS AS A FUNCTION OF THEIR MALE PARENT SELECTION
Abstract
Eighty-eight grain sorghum hybrids Sorghum bicolor (L.) Moench plus five commercial hybrids as checks were tested in three locations in Nebraska and one location in North Dakota in several planting dates in 1984. This was done to evaluate their performance in markedly different environments as a function of their male parent selection location and methods. Highly significant differences were found between the genotypes for days to 50% bloom, plant height, grain yield, lodging percentage, seeds/m('2), 100-seed weight and test weight. Significant female, male and female x male interaction effects were also found for all of the agronomic traits. The male groups had a major effect on the performance of the genotypes in all the different environments. The combined analysis for the planting dates showed significant differences between planting dates, genotypes and genotype x planting date interactions in most of the locations for most of the traits. Variations among locations, genotypes and genotype x location interactions were also found for all the agronomic traits over all the environments. The performance of the genotypes and their male parent groups for the individual analysis of each environment as well as when combined over the environments was without a significant difference. Correlation coefficients between the different traits gave significant positive and negative correlations. Locations clearly had a major effect on the relationship between traits. Seed number and seed size were found to be the most important components of yield for all the genotypes over all the environments. Sorghum stalks 40 days old were found to be colonized by several fungal species. The diversity and the abundance of each species differed in all the environments due to the difference in environmental factors.
Subject Area
Agronomy
Recommended Citation
MOSTAFA, MOHAMED SAMY ABD EL-FATTAH, "AGRONOMIC PERFORMANCE OF GRAIN SORGHUM HYBRIDS (SORGHUM BICOLOR (L.) MOENCH) UNDER SEVERAL ENVIRONMENTS AS A FUNCTION OF THEIR MALE PARENT SELECTION" (1986). ETD collection for University of Nebraska-Lincoln. AAI8624607.
https://digitalcommons.unl.edu/dissertations/AAI8624607