IMPROVEMENT OF YIELD AND LlNT CHARACTERISTICS OF SOME EGYPTIAN COTTON VARIETIES UNDER STRESS CONDITIONS | ||||
| Journal of Plant Production | ||||
| Article 2, Volume 30, Issue 6, June 2005, Page 2951-2968 PDF (1.35 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2005.237237 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
H. S. Khafaga,1; Nahed A. K. Rashed 2; A. S. Abd-Elnabe1
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| 1Plant Adaptation Unit - Genetic Resources Dept, Desert Research Center. | ||||
| 2Cytogentic Unit Genetic Resources Dept, Desert Research Center. | ||||
| Abstract | ||||
| Field experiments were carried out during two successive seasons 2002 and 2003 on saline sandy soils at El-Maghara Research Station, Desert Research Center, North Sinai to study the effect of genetic variations of some cotton varieties i.e. Giza 45, Giza 70. Giza 83 and Giza 85 ) and some different foliar application treatments . i.e. ZnSOi 0.1%, MnSO4 1.0%, FeSO; 0.5% and tap water as control on yield, yield components lint quality and some biochemical genetic markers of some cotton varieties. A split plot design with three replications was used. The main plots were devoted at random to four spray-foliar application treatments and four cotton varieties. in the sub plots. The obtained results could be summarized as follows' The result indicated that genetic variability were detected clearly among the four cotton varieties in yield, yield components and lint quality. Giza 83 cultivar exhibited a significant higher values and considered the highly yield and its attributes. Generally. foliar application treatments may correct the metabolic disturbance under stress conditions of El-Maghara, Agric Research Station (sandy and saline soil). Foliar applications by Zf‘lSO-i 01%| MnSO4 1.0% , and FeSO; 0.5% led to improve growth parameters. yield, yield components and lint quality of all cotton varieties as compared with the control during both seasons Zn804 0.1% surpassed the other spray treatments for increasing all studied parameters of cotton varieties under investigation Also ZnSO.. 0 1%, combined with Giza 83 cultivar interaction achieved the best treatment .The Extra long staple varieties had longer , stronger and finer than the long staple varieties. Also. micronutrients (Zn'e, Mn“2 and Fe'zl as a foliar application exhibited a slight improve for fiber pr0perties. Random amplified polymorphic DNA (RAPD) and five random ‘iO-mer primers were used to amplify DNA via polymerase chain reaction (PCR)‘ 31 RAPDs were generated and 15 (48.4%) were polymorphic.Similanty matrix was generated from RAPE) results Dendrogram generated by UPGMA analysrs, detected that long stable varieties layed near each other. The same was true with extra-long stable ones. Also. each variety had its unique RAPD markers. The same was true in case of 808. Protein markers. ln-addition‘ newly synthesised bands either under deficiency or applications of different micronutrients. could be used as marker — assisted selection for higher yield varieties under this conditions. The obtained results could be used by cotton breeders and producers to got higher yield and lint percentage or have lint qualities. | ||||
| Keywords | ||||
| Adaptation - Biochemical genetic markers — Cotton varieties - PCR; DNA markers - Foiiar application — Genetic variability - Lint quality- Protein Markers — RAPD - Yield | ||||
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