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Two cycle of direct selection were accompanied with two selection intensities, i.e, 5% and 10% one in improving seed cotton yield/plant, boll weight and lint percentage of the cotton cross Giza 80 x Giza 85. Selection was made by one method, i.e. pedigree selection (PSM) from F2 to F4 generation. Comparing mean performance of F2 with those of F3 and F4 generations revealed increase in mean values for all traits with advanced generations from F2 to F4indicating an accumulation of increasing alleles. F2 generation registered high GCV and PCV values than those of the succeeding generations for the studied traits. The closer magnitude of GCV and PCV in F3and F4 generations indicated that genotype had played greater role rather than environment for boll weight, lint percentage, number of bolls per plant and seed cotton yield per plant. Heritability estimates in broad sense improved considerably for all traits from F2 to advance F3 and F4 generations. The predicted advance at two selection intensities in F4 generation achieved highly genetic gain from selection for boll weight, seed cotton yield/plant and number of bolls /plant. The results indicated that the predicted and actual genetic advances were of high values for boll weight, seed cotton yield/plant, lint percentage and bolls/ plant at both 5% and 10% selection intensity. The selection intensity at 5% gave a highly improvement in the most selected traits in F3 and F4 generations for expected and actual genetic advances due to accumulation of useful alleles. Families number 1, 9,155, 29 and 156 were the best genotypes for relevant yield characters. These families surpassed the better parent, chick varity and gave best values for most characters. The breeder may exploit such families in breeding programs aiming to improvement yield characters. [ABSTRACT FROM AUTHOR]

Six genotypes including first and second parents, first and second retrograde crosses with first and second generations of two wheat crosses, namely Sids 12 x Sakha 93 (cross 1) and Sids 1 x Sids 14 (cross 2) were established during three successive seasons of 2016/2017, 2017/2018 and 2018/2019 at the Experimental Farm of Faculty of Agriculture, Al-Azhar University, Assiut. obtained results showed that there were significant differences among the six populations mean of the current crosses for most studied traits, which provides the existence of genetic variation for these traits. The additive gene effects were significant for all studied traits, except for days to 50% heading and of 100-grains weight in cross 2 and number of spikes /plant in cross 1. The dominance gene effects were found to be significant and highly significant for most studied traits, except for days to 50% heading and number of kernels /spike in cross 2. The additive x additive type of gene effects was positive and highly significant for plant height and grain yield/plant in the two crosses and number of spikes/plant and weight of 100 grains in cross 2. High expected genetic advance was recorded in the second generation (F2) for grain yield per plant in the two hybrids, indicated a continuous increase in variance. Through these studies, it can be recommended that early selection of these genotypes can be carried out to obtain a high yield. [ABSTRACT FROM AUTHOR]

Copyright of Egyptian Journal of Sheep & Goats Sciences is the property of Egyptian National Agricultural Library (ENAL) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Plant Production is the property of Egyptian National Agricultural Library (ENAL) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Assiut Journal of Agricultural Sciences is the property of Egyptian National Agricultural Library (ENAL) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Plant Production is the property of Egyptian National Agricultural Library (ENAL) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Plant Production is the property of Egyptian National Agricultural Library (ENAL) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Assiut Journal of Agricultural Sciences is the property of Egyptian National Agricultural Library (ENAL) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Two cycles of pedigree selection for one faba bean cross population i.e. Giza 429 x Giza 3 were done from F4 to F6 generations during three successive seasons, 2011/2012, 2012/2013 and 2013/2014. The obtained results showed significant differences among families at both cycles of selection. The overall families means exceeded significantly the best parent for seed yield/plant in the first cycle as well as, number of branches/plant, number of pods/plant and 100-seed yield/plant in the second cycle. The C1 families possessed considerable amount of genotypic and phenotypic variability for all studied traits. Consequently, high estimates of heritability were obtained. The variability between C2 families decreased rapidly for all studied traits. Positive significant genotypic and phenotypic correlations were detected between most pairs of traits at both cycles of selection. However, strong positive significant genotypic and phenotypic correlations were found between seed yield/plant and number of pods/plant at both cycles of selection, indicated number of pods/plant is a good selection criterion to improve seed yield/plant. The actual response to selection was higher than the expected response for all studied traits at the two cycles of selection . [ABSTRACT FROM AUTHOR]