IMPROVING LINT YIELD AND ITS COMPONENTS IN EARLY SEGREGATING GENERATIONS OF GIZA 45 X GIZA 75 COTTON CROSS
EL-OKKIAH, A., Mohamed, M., SARY, G., EL-LAWENDEY, M. (2008). IMPROVING LINT YIELD AND ITS COMPONENTS IN EARLY SEGREGATING GENERATIONS OF GIZA 45 X GIZA 75 COTTON CROSS. EKB Journal Management System, 86(2), 631-641. doi: 10.21608/ejar.2008.205731
AHMED F. H. EL-OKKIAH; MOHAMED K. Mohamed; GABER A. SARY; MOHAMED M. EL-LAWENDEY. "IMPROVING LINT YIELD AND ITS COMPONENTS IN EARLY SEGREGATING GENERATIONS OF GIZA 45 X GIZA 75 COTTON CROSS". EKB Journal Management System, 86, 2, 2008, 631-641. doi: 10.21608/ejar.2008.205731
EL-OKKIAH, A., Mohamed, M., SARY, G., EL-LAWENDEY, M. (2008). 'IMPROVING LINT YIELD AND ITS COMPONENTS IN EARLY SEGREGATING GENERATIONS OF GIZA 45 X GIZA 75 COTTON CROSS', EKB Journal Management System, 86(2), pp. 631-641. doi: 10.21608/ejar.2008.205731
EL-OKKIAH, A., Mohamed, M., SARY, G., EL-LAWENDEY, M. IMPROVING LINT YIELD AND ITS COMPONENTS IN EARLY SEGREGATING GENERATIONS OF GIZA 45 X GIZA 75 COTTON CROSS. EKB Journal Management System, 2008; 86(2): 631-641. doi: 10.21608/ejar.2008.205731

IMPROVING LINT YIELD AND ITS COMPONENTS IN EARLY SEGREGATING GENERATIONS OF GIZA 45 X GIZA 75 COTTON CROSS

Egyptian Journal of Agricultural Research
Article 18, Volume 86, Issue 2, July 2008, Page 631-641  XML PDF (3.34 MB)
Document Type: Original Article
DOI: 10.21608/ejar.2008.205731
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Authors
AHMED F. H. EL-OKKIAH1; MOHAMED K. Mohamed2; GABER A. SARY2; MOHAMED M. EL-LAWENDEY1
1Cotton Research Institute, Agricultural Research Center, Giza, Egypt
2Faculty of Agriculture, Moshtohor, Zagazig University, Egypt
Abstract
The present study was conceived in an effort to investigate: 1-The genetic, phenotypic and environmental variances and covariances among traits in an intraspecific population generated from a cross between two Egyptian cotton cultivars, Giza 45 (extra long staple ELS) and Giza 75 (long staple LS). 2- The magnitudes of the genotypic and phenotypic correlations between traits. 3-Compare the relative efficiencies of nine selection procedures measured in terms of the expected and realized response to selection. A field trial was carried out at Sakha Agricultural Research Station, A.R.C., Egypt during 2000-2002 growing seasons. The results indicated that F4 means were higher than those of F3 for all studied traits except seeds/boll. Maximum realized genetic advance for lint yield was achieved using the direct phenotypic trait selection for lint/seed (Ix3). The selection index, In exhibited the highest predicted genetic advance from F3 to F4 for lint yield trait. From F4 to F5 the predicted genetic advance of lint yield exhibited maximum values using the index Ixw. Also, maximum predicted responses to selection for lint percentage and seed index in F4 generation were achieved using the direct phenotypic trait selection for lint/seed and seeds/boll, respectively.
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