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040 _aEG-GiCUC
_beng
_cEG-GiCUC
041 0 _aeng
049 _aDeposite
097 _aM.Sc
099 _aCai01.07.13.M.Sc.2021.Na.I
100 0 _aNagwa Hamdy Fahym Khedr
245 1 0 _aIn vitro evaluation of some olive cultivars grown under salinity stress /
_cNagwa Hamdy Fahym Khedr ; Supervised Elsaid Sadek Hegazi , Abdou Mohamed Abdallatif
246 1 5 _aالتقييم المعملى لبعض أصناف الزيتون الناميه تحت ظروف الإجهاد الملحى
260 _aCairo :
_bNagwa Hamdy Fahym Khedr ,
_c2021
300 _a115 P . :
_bcharts , facsmilies ;
_c25cm
502 _aThesis (M.Sc.) - Cairo University - Faculty of Agriculture - Department of Pomology
520 _aThe current study was carried out to investigate the effect of salinity stress (NaCl) on three in vitro regenerated olive shoots of three cultivars (Teffahi, Aggizi shami and Koroneiki). Olive cultivars were subjected to six saline treatments (0, 2500, 5000, 7500, 10000 and 12500 mg L-1 of NaCl). In order to examine the role of olive roots in salinity tolerance, rooted plantlets of Aggizi shami and Teffahi olive cultivars were subjected to salt stress (0, 5000 and 10000 mg l-1NaCl). The obtained data indicated that, increasing NaCl concentration in growth media significantly decreased survival percentage, shoot length, total leaves number/plantlet, shoot fresh weight (FW), shoot dry weight (DW), plantlet fresh weight (FW), plantlet dry weight (DW), root number, root fresh weight, root dry weight (DW). Chlorophyll (a/b&/total) content. Moreover salinity stress increased defoliation%, salt injury index, and proline content.The analysis of leaf mineral content showed a significant increase in leaf content of Na+ and decrease of K+ and Ca2+ content under salinity stress. NaCl at 10000 mg L-1 considered as the lethal dose as it recorded high mortality rate of the three olive cultivars. A marked change in leaf anatomical structure was observed under salinity stress. The obtained results showed that, Aggizi shami and Teffahi cvs. were more tolerant to salinity stress as both cultivars showed higher survival percentage and better growth performance compared with Koroneiki cv.
530 _aIssued also as CD
653 4 _aEvaluation
653 4 _aOlive
653 4 _aTolerance
700 0 _aAbdou Mohamed Abdallatif ,
_eSupervising
700 0 _aElsaid Sadek Hegazi ,
_eSupervising
856 _uhttp://172.23.153.220/th.pdf
905 _aAmira
_eCataloger
905 _aNazla
_eRevisor
942 _2ddc
_cTH
999 _c81435
_d81435