International Journal of Innovation and Applied Studies, 2016
This work was carried out at the Field Crop Institute-Agricultural Experimental Station of Setif ... more This work was carried out at the Field Crop Institute-Agricultural Experimental Station of Setif (Algeria) during the 2008/2009 cropping season. The objective was to evaluate some pheno-morpho-physiological and agronomic traits in five durum wheat (Triticum durum Desf.) varieties and F2 segregating lines. The results indicate the presence of a good amount of variability for the measured traits. Low relationships between wheat productivity and the physiological traits is found, which makes them less effective as selection criteria in the case of this study. However, the above-ground biomass measured at maturity stage seems to be the determinant factor in grain yield expression. High heritability associated with high coefficients of phenotypic and genotypic variation values, along with high genetic gain are recorded for the above-ground biomass and spikes weight per plant, suggesting that early selection based on these traits would be effective to improve the stress tolerance and enha...
Revista Facultad Nacional de Agronomía Medellín, 2019
Genetic parameters such as leaf relative water content, leaf chlorophyll content, plant height, a... more Genetic parameters such as leaf relative water content, leaf chlorophyll content, plant height, above-ground biomass, harvest index, grain yield, and grain yield components of Bousselam/Mrb5 durum wheat (Triticum durum Desf.) cross were estimated based on generation means analysis. A, B, C, and D scaling and Chi-square (χ2) tests revealed the inadequacy of the simple additive-dominance model. This result suggests the presence of digenic epistasis for most studied traits; the duplicate epistasis was present for relative water content, above-ground biomass, and grain yield; and complementary epistasis was observed for chlorophyll content. Significant genotypic correlation coefficients appeared among grain yield, relative water content, and above-ground biomass. This suggests useful indirect selection criteria to improve simultaneously these traits, which showed significant heritability. It can be concluded that the traits investigated show a complex genetic behavior, which implies tha...
Plant height, straw mass and flag leaf area are recognized by physiologists as morphological mark... more Plant height, straw mass and flag leaf area are recognized by physiologists as morphological markers of drought stress tolerance. Developing varieties intended for arid and semi-arid zones need to select for these traits. Understanding the genetic control of a given trait helps breeder to handle the segregating populations under study in a more efficient and consistent manner by choosing the best breeding method available to realize significant genetic advance. For this purpose, six generations: parents, F1, F2, BC1, BC2, derived from MBB x ‘Gaviota’ durum wheat (Triticum durum Desf.) cross were grown to investigate the nature of gene action involved in the inheritance pattern of the three traits. The results indicated that the six-parameter model fitted the best the data related to the variability present in the generation means of the studied traits. Generation mean analysis indicated that non-allelic interactions were important factors controlling the expression of these characte...
Plant height, straw mass and flag leaf area are recognized by physiologists as morphological mark... more Plant height, straw mass and flag leaf area are recognized by physiologists as morphological markers of drought stress tolerance. Developing varieties intended for arid and semi-arid zones need to select for these traits. Understanding the genetic control of a given trait helps breeder to handle the segregating populations under study in a more efficient and consistent manner by choosing the best breeding method available to realize significant genetic advance. For this purpose, six generations: parents, F1, F2, BC1, BC2, derived from MBB x ‘Gaviota’ durum wheat (Triticum durum Desf.) cross were grown to investigate the nature of gene action involved in the inheritance pattern of the three traits. The results indicated that the six-parameter model fitted the best the data related to the variability present in the generation means of the studied traits. Generation mean analysis indicated that non-allelic interactions were important factors controlling the expression of these characte...
International Journal of Innovation and Applied Studies, 2016
This work was carried out at the Field Crop Institute-Agricultural Experimental Station of Setif ... more This work was carried out at the Field Crop Institute-Agricultural Experimental Station of Setif (Algeria) during the 2008/2009 cropping season. The objective was to evaluate some pheno-morpho-physiological and agronomic traits in five durum wheat (Triticum durum Desf.) varieties and F2 segregating lines. The results indicate the presence of a good amount of variability for the measured traits. Low relationships between wheat productivity and the physiological traits is found, which makes them less effective as selection criteria in the case of this study. However, the above-ground biomass measured at maturity stage seems to be the determinant factor in grain yield expression. High heritability associated with high coefficients of phenotypic and genotypic variation values, along with high genetic gain are recorded for the above-ground biomass and spikes weight per plant, suggesting that early selection based on these traits would be effective to improve the stress tolerance and enha...
Revista Facultad Nacional de Agronomía Medellín, 2019
Genetic parameters such as leaf relative water content, leaf chlorophyll content, plant height, a... more Genetic parameters such as leaf relative water content, leaf chlorophyll content, plant height, above-ground biomass, harvest index, grain yield, and grain yield components of Bousselam/Mrb5 durum wheat (Triticum durum Desf.) cross were estimated based on generation means analysis. A, B, C, and D scaling and Chi-square (χ2) tests revealed the inadequacy of the simple additive-dominance model. This result suggests the presence of digenic epistasis for most studied traits; the duplicate epistasis was present for relative water content, above-ground biomass, and grain yield; and complementary epistasis was observed for chlorophyll content. Significant genotypic correlation coefficients appeared among grain yield, relative water content, and above-ground biomass. This suggests useful indirect selection criteria to improve simultaneously these traits, which showed significant heritability. It can be concluded that the traits investigated show a complex genetic behavior, which implies tha...
Plant height, straw mass and flag leaf area are recognized by physiologists as morphological mark... more Plant height, straw mass and flag leaf area are recognized by physiologists as morphological markers of drought stress tolerance. Developing varieties intended for arid and semi-arid zones need to select for these traits. Understanding the genetic control of a given trait helps breeder to handle the segregating populations under study in a more efficient and consistent manner by choosing the best breeding method available to realize significant genetic advance. For this purpose, six generations: parents, F1, F2, BC1, BC2, derived from MBB x ‘Gaviota’ durum wheat (Triticum durum Desf.) cross were grown to investigate the nature of gene action involved in the inheritance pattern of the three traits. The results indicated that the six-parameter model fitted the best the data related to the variability present in the generation means of the studied traits. Generation mean analysis indicated that non-allelic interactions were important factors controlling the expression of these characte...
Plant height, straw mass and flag leaf area are recognized by physiologists as morphological mark... more Plant height, straw mass and flag leaf area are recognized by physiologists as morphological markers of drought stress tolerance. Developing varieties intended for arid and semi-arid zones need to select for these traits. Understanding the genetic control of a given trait helps breeder to handle the segregating populations under study in a more efficient and consistent manner by choosing the best breeding method available to realize significant genetic advance. For this purpose, six generations: parents, F1, F2, BC1, BC2, derived from MBB x ‘Gaviota’ durum wheat (Triticum durum Desf.) cross were grown to investigate the nature of gene action involved in the inheritance pattern of the three traits. The results indicated that the six-parameter model fitted the best the data related to the variability present in the generation means of the studied traits. Generation mean analysis indicated that non-allelic interactions were important factors controlling the expression of these characte...
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