Author:
Abd EL-Aty Mohamed S.,Al-Ameer Mohamed A.,Kamara Mohamed M.,Elmoghazy Mohamed M.,Ibrahim Omar M.,AL-Farga Ammar,El-Tahan Amira M.
Abstract
AbstractThis work was carried out to select cotton genotypes adapted to semi-arid climate conditions cultivated under irrigation for high yields and the standards of the fiber quality properties required by the textile industry. Also to determine the predicted and realized gains from different selection indices to improve some economic characters under water stress conditions. Except for lint percentage and Pressley index, F4 generation reduced PCV and GCV values for all studied characters due to reduction in genetic variability and heterozygosity due to different selection procedures that exhausted a significant part of variability. Except for fiber length and micronaire reading, mean performance in the F4 generation was revealed to be higher than those in the F3 generation for all studied characters. However, micronaire reading was lower (desirable) in F4 than F3 generation. Generally, genotypic correlations were higher than phenotypic correlations. Direct selection for lint index (Ped.3) was the most efficient in improving lint cotton yield/plant and bolls/plant. However, the multiplicative index involving all studied characters (I.5) exhibited the highest values for boll weight. Also, the Ped.2 index (direct selection for lint percentage) proved to be the most efficient in improving seed and lint indexes. Direct selection for lint cotton yield/plant (Ped.1) could produce the highest desirable values for lint percentage and seed per boll with a relatively reasonable yield. A selection index involving yield and its components (I.3) is recommended in improving uniformity index, fiber strength, and micronaire reading. The superior five families released from these indices in F4 generation exceeded the better parent for lint cotton yield/plant, bolls/plant, boll weight, seeds/boll, lint index, and reasonable fiber traits. These families could be continued to further generations as breeding material for developing water deficit tolerant genotypes.
Funder
City of Scientific Research and Technological Applications
Publisher
Springer Science and Business Media LLC
Reference59 articles.
1. Carvalho, J. F. et al. Selection of upland cotton for the Brazilian semi-arid region under supplementary irrigation. Crop Breed. Appl. Biotechnol. 19, 185–192 (2019).
2. Abo Sen, E. Z. F. et al. Evaluation of genetic behavior of some Egyption Cotton genotypes for tolerance to water stress conditions. Saudi J. Biol. Sci. 29, 1611–1617. https://doi.org/10.1016/j.sjbs.2021.11.001 (2022).
3. Abou-Elwafa, S. Efficiency of single and multiple traits selection for yield and its components in varietal maintenance of Giza 90 Egyptian cotton variety. World J. Agric. Res. 4, 166–172. https://doi.org/10.12691/wjar-4-6-3 (2016).
4. Khan, Z., Ali, Z. & Khan, A.A. (Eds.). Cotton Breeding and Biotechnology: Challenges and Opportunities (1st ed.). (CRC Press, 2022). https://doi.org/10.1201/9781003096856.
5. Sorour, F. A., Abdel-Aty, M. S., Yehia, W. M. & Kotb, H. M. Heterosia and combining ability in some cotton crosses in two different environments. 1-Yield and yield components traits. J. Plant Prod. Mansoura Univ. 4(4), 1707–1723 (2013).
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