الفهرس 
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Abstract
The purpose of this investigation was to study the mature and magnitude of variability generated for different quantitative traits in the biparental progenies (obtained by attempting crosses in F2 generations) and F3 selfed populations. The study was also aimed to estimate the variance components for yield, yield components traits and fiber properties in both biparental progenies and F3 populations. Study the impact of intermating population on nature and magnitude of association for the studied characters. The study was extended to estimate and compare the genetic gain obtained from Smith-Hazel index model of selection index with direct and indirect selection to enhance selection efficiency of superior families and to estimate correlated response to selection.