Publications by authors named "W M B Yehia"
Cotton (Gossypium barbadense L.) is a leading fiber and oilseed crop globally, but genetic diversity among breeding materials is often limited. This study analyzed genetic variability in 14 cotton genotypes from Egypt and other countries, including both cultivated varieties and wild types, using agro-morphological traits and genomic SSR markers.
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- The Agriculture Research Center's Sakha Agriculture Research Station conducted a study on cotton genetics between 2016 and 2018, selecting superior plants from F generations produced by crossing Giza 94 and Suvin.
- They found that over time, the mean values of traits in the cotton population increased, with F generations showing higher genetic and phenotypic variance compared to subsequent generations, emphasizing the role of genetics over environmental factors.
- The research identified specific families (9, 13, 19, 20, and 21) as the best genotypes for yield traits, indicating their potential for developing high-yield cotton varieties in future breeding programs.
Article Synopsis
- Understanding gene activity and combining ability is essential in hybrid breeding programs, as shown by a study on twelve cotton genotypes across three growing seasons.
- The study revealed significant genetic diversity among the genotypes, with noteworthy differences in traits, indicating both additive and non-additive gene variations.
- The research highlighted that selecting lines and testers with strong general combining ability (GCA) and crosses with high specific combining ability (SCA) can effectively enhance cotton traits like yield and fiber quality.
To generate high-yielding cultivars with favorable fiber quality traits, cotton breeders can use information about combining ability and gene activity within a population to locate elite parents and potential F1 crosses. To this end, in the current study, twelve cotton parents (eight genotypes as female parents and four testers) and their F1 crosses obtained utilizing the linex tester mating design were evaluated for their general and specialized combining abilities (GCA and SCA, respectively) of yield traits. The findings showed that for all the investigated variables, variances owing to genotypes, parents, crosses, and parent vs cross showed extremely significant (P ≤ 0.
View Article and Find Full Text PDFThis current study was performed to determine the influences of plant spacing, Nitrogen (N) fertilization rate and their effect, on growth traits, yield, and yield components of cotton ( L.) cv. Giza 97 during the 2019 and 2020 seasons.
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