Behavior of Some Olive Cultivars and Genotypes Transplants Under Different NaCl Concentrations | ||
| Scientific Journal of Agricultural Sciences | ||
| Volume 7, Issue 3, September 2025, Pages 65-86 PDF (1.02 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/sjas.2025.411467.1521 | ||
| Authors | ||
| Ebtesam E. Abd Elhameed* 1; Madlen Rashed Sawarsan2; Ashraf Abd elfattah Hammad3 | ||
| 1Department of Olive and Semi-arid Zone Fruits Research, Horticulture Research Institute, Agricultural | ||
| 2Horticulture department, agriculture faculty, Ain-shams university, Egypt | ||
| 3Horticulture department, agriculture faculty, Cairo university, Giza, Egypt | ||
| Abstract | ||
| Salinity is a major abiotic constraint limiting olive cultivation in Egypt. This study, conducted in the 2023-2024 seasons at the Horticultural Research Institute, Agricultural Research Center (Giza, Egypt), evaluated the morphological, physiological, and biochemical traits of transplants of two cultivars (Cerasuola and Criolla) and seven genotypes-Giza 32, 48, 55, 91, 92, 99, and 102-subjected to four NaCl levels (2000, 4000, 6000, and 8000 mg/L), compared to a control (tap water). Results revealed that Giza 48 exhibited the highest tolerance, maintaining survival, stable growth (stem elongation, leaf area, fresh biomass), chlorophyll content, RWC, elevated proline, favorable ion balance (lower Na+ and high K+/Na+ ratio), and low LSHC. Cerasuola showed comparable tolerance, followed by Giza 99. In contrast, Giza 32 was the most sensitive. The other genotypes displayed intermediate responses. Based on growth performance under salinity, Giza 48, Cerasuola and Giza 99 can be categorized as salt-tolerant; Giza 91, Giza 55, Criolla, Giza 92, and Giza 102 as moderately tolerant; and Giza 32 as salt-sensitive. The anatomical investigations of three olive representatives’ genotypes-Giza 48 (tolerant at 8000 mg/L NaCl), Giza 55 (moderately tolerant at 6000 mg/L), and Giza 32 (sensitive at 4000 mg/L)-revealed that Giza 48 exhibited enhanced leaf thickness (upper epidermis, palisade, spongy mesophyll, xylem, and phloem) and well-developed root structures. Giza 32 showed reduced disorganized anatomy, while Giza 55 displayed moderate anatomical plasticity. In conclusion, Giza 48, Cerasuola, and Giza 99 appeared suitable for cultivation in highly saline reclaimed lands or areas irrigated with saline groundwater. | ||
| Keywords | ||
| Olive; Salinity; Cultivars; Genotypes, NaCl | ||
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