Genetic improvement of Egyptian cotton (Gossypium barbadense L.) for high yield and fiber quality properties under semi arid conditions.

Autor: Lamlom SF; Plant Production Department, Faculty of Agriculture (Saba Basha), Alexandria University, Alexandria, 21531, Egypt., Yehia WMB; Cotton Breeding Department, Cotton Research Institute, Agriculture Research Center, Giza, Egypt., Kotb HMK; Cotton Breeding Department, Cotton Research Institute, Agriculture Research Center, Giza, Egypt., Abdelghany AM; Crop Science Department, Faculty of Agriculture, Damanhour University, Damanhour, 22516, Egypt., Shah AN; Department of Agricultural Engineering, Khwaja Fareed University of Engineering and Information Technology, Rahim Yar Khan, 64200, Punjab, Pakistan. adnan.shah@kfueit.edu.pk., Salama EAA; Agricultural Botany Department, Faculty of Agriculture (Saba Basha), Alexandria University, Alexandria, 21531, Egypt., Abdelhamid MMA; Agricultural Botany Department, Faculty of Agriculture (Saba Basha), Alexandria University, Alexandria, 21531, Egypt., Abdelsalam NR; Agricultural Botany Department, Faculty of Agriculture (Saba Basha), Alexandria University, Alexandria, 21531, Egypt. nader.wheat@alexu.edu.eg.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2024 Apr 02; Vol. 14 (1), pp. 7723. Date of Electronic Publication: 2024 Apr 02.
DOI: 10.1038/s41598-024-57676-w
Abstrakt: Between 2016 and 2018, the Agriculture Research Center's Sakha Agriculture Research Station conducted two rounds of pedigree selection on a segregating population of cotton (Gossypium barbadense L.) using the F 2 , F 3 , and F 4 generations resulting from crossing Giza 94 and Suvin. In 2016, the top 5% of plants from the F 2 population were selected based on specific criteria. The superior families from the F 3 generation were then selected to produce the F 4 families in 2017, which were grown in the 2018 summer season in single plant progeny rows and bulk experiments with a randomized complete block design of three replications. Over time, most traits showed increased mean values in the population, with the F 2 generation having higher Genotypic Coefficient of Variance (GCV) and Phenotypic Coefficient of Variance (PCV) values compared to the succeeding generations for the studied traits. The magnitude of GCV and PCV in the F 3 and F 4 generations was similar, indicating that genotype had played a greater role than the environment. Moreover, the mean values of heritability in the broad sense increased from generation to generation. Selection criteria I2, I4, and I5 were effective in improving most of the yield and its component traits, while selection criterion I1 was efficient in improving earliness traits. Most of the yield and its component traits showed a positive and significant correlation with each other, highlighting their importance in cotton yield. This suggests that selecting to improveone or more of these traits would improve the others. Families number 9, 13, 19, 20, and 21 were the best genotypes for relevant yield characters, surpassing the better parent, check variety, and giving the best values for most characters. Therefore, the breeder could continue to use these families in further generations as breeding genotypes to develop varieties with high yields and its components.
(© 2024. The Author(s).)
Databáze: MEDLINE
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