The response of germination characteristics and seedling growth of three cotton cultivars to drought and salinity stresses | ||
| علوم و فناوری بذر ایران | ||
| Volume 15, Issue 1 - Serial Number 41, March 2026, Pages 21-35 PDF (808.89 K) | ||
| Document Type: Original Article | ||
| DOI: 10.22092/ijsst.2024.364549.1513 | ||
| Authors | ||
| Samaneh Sadat Seyed Heydarian1; Reza Tavakkol Afshari* 2; Ebrahim Izadi Darbandi1 | ||
| 1Professor, Department of Agrotechnology, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran. | ||
| 2FProfessor, Department of Agrotechnology, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran.erdowsi Univ. Mashhad | ||
| Abstract | ||
| High salinity and drought are common environmental problems that affect seed germination and plant growth. Identifying cultivars tolerant to drought and salinity stress conditions and using them in agricultural systems is one of the tasks of improving cotton production. For this purpose,3 cotton cultivars in the form of a completely randomized design and using factorial testing under non-stressed and stressed conditions Three repetitions were evaluated. In both experiments,3 cotton cultivars(MAY344, BA440, VARAMIN)were used as the first factor, and the second factor was salt stress in the first experiment and drought stress in the second experiment. The levels of salinity stress were 0, 180 60, 120 ds/m using NaCl salt and in the second experiment, the drought stress levels were considered to be 0, 0.4, 0.8 MPa using polyethylene glycol 6000 solution. The studied properties include germination percentage, germination speed, root length, stem length, wet weight of root and stem, and dry weight of root and stem. The results of the study showed that there was a significant difference at the probability level of 1% or 5% between cultivars in each There are two stresses, but in general, drought stress had more inhibition on the measured traits.For root dry weight,Varamin number had the lowest decrease compared to the other two cultivars, and at the last level of stress compared to the control,for salinity stress 14 % and recorded a 66% reduction in drought stress. Varamin cultivar had better performance in all the investigated parameters under drought and salinity stress conditions. | ||
| Keywords | ||
| Cotton; Germination Index; Early stages of growth; Salinity stress; Drought stress | ||
| References | ||
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