Genetic Analysis of F3 and F4 Generations from Two Bread Wheat Crosses under Optimum and Late Sowing Dates | ||
| Journal of Plant Production | ||
| Article 1, Volume 16, Issue 6, June 2025, Pages 275-284 PDF (860.33 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jpp.2025.319881.1379 | ||
| Authors | ||
| Walaa A.A. Elhag; M. A. Hussein; A. M. Sharshar* | ||
| Wheat Research Department, Field Crops Research Institute, Agricultural Research Center, Egypt | ||
| Abstract | ||
| This Research was performed to assess the relative response to the selection in F3, and F4 generation of two bread wheat crosses under optimum (15November), and late (15 December) sowing date using pedigree selection methods. The findings showed that the selected families or genotypes under study exhibited genetic diversity for the studied traits. Significant differences were found among the parents, F3 and F4 families for most of the studied characters under both sowing dates. The means of studied characters of parents, F3 and F4 families decreased under the late sowing date. The extent of genetic variance among F3 and F4 families was higher than that among families, and plants within families and the equivalent environmental variance in most traits. The additive genetic variance components were greater than corresponding dominance for most of the studied traits. The broad sense heritability estimates were high for all the studied traits in both F3 and F4 families, while the values of narrow sense heritability, ranged from low to moderate for most of the studied traits under both sowing dates. The final selection identified four superior families from each cross recorded higher grain yield than their respective parents and exhibited days to maturity within the range of their respective parents, with significant or non-significant differences and will be further evaluated in the next season as F5 families to select the best-performing lines with the highest grain yield with early maturity. | ||
| Keywords | ||
| Bread wheat; sowing dates; Heritability | ||
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