(Impact of Drought Stress on Six Summer Squash (Cucurbita pepo L.) Genotypes in Sandy Reclaimed Land. ) | ||||
| Journal of Sohag Agriscience (JSAS) | ||||
| Volume 10, Issue 2, December 2025, Page 71-87 PDF (1.46 MB) | ||||
| Document Type: Research and Review Papers | ||||
| DOI: 10.21608/jsasj.2025.450417 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Gihan Atif Ramadan  ; Hazem Abderahman Obiadalla Ali; Maher Hassan Hosseny; Sayed Gebril
| ||||
| Horticulture Department Faculty of Agriculture Sohag University Sohag Egypt | ||||
| Abstract | ||||
| Drought stress is a major global challenge that threatens sustainable agriculture and food security. Drought stress is expected to become more severe with the rise of climate change and global warming. Summer squash consists of more than 90 % water; therefore, it is sensitive to drought stress. This study investigated the impact of three irrigation treatments, T1 (100 % RAW-full irrigation) control, T2 (75 % RAW- moderate stress), and T3 (50 % RAW- severe stress), on six summer squash genotypes grown under open field conditions during the seasons of 2018 and 2019. Our results showed that drought stress substantially affected all summer squash genotypes. Drought stress decreased the vegetative growth traits such as plant height and plant fresh weight. Also, it reduced the leaf relative water content, leaf chlorophyll content, and water use efficiency, but it slightly increased the leaf osmotic adjustment. The number of days to 50 % flowering slightly decreased with increasing drought stress. The total yield, number of fruits per plant and weight of fruits per plant decreased because of the negative effects of the drought on the traits studied above. These findings indicate that drought stress negatively affected all summer squash genotypes; however, they significantly differed in their response to the drought. All genotypes surpassed the check cultivar Iskandrany. Rivera, Azyad and Fadwa outperformed all summer squash genotypes in most studied traits, especially the yield and yield component traits under normal and stress conditions. | ||||
| Keywords | ||||
| full irrigation; moderate drought stress; severe drought stress; summer squash hybrids; desert soils | ||||
|
Statistics Article View: 6 PDF Download: 3 |
||||
