Effect of Salt Stress on Germination and Biological Growth of 50 Genotypes of Durum Wheat (Triticum durum Desf)
DOI:
https://doi.org/10.3923/pjn.2015.957.963Keywords:
Durum wheat, germination capacity, NaCl, reduction index, salt stressAbstract
This study aims to evaluate the physiological behaviour of 50 genotypes of durum wheat (Triticum durum Desf) in salt stress conditions at germination stage. In this context, a trial was conducted in a growth chamber with controlled temperature and photoperiod. The seeds are germinated in Petri dishes containing fresh water in one case and in the presence of NaCl (10 g/l) in another case for 8 days. The measurements were for the final germination, germination kinetics, the length of the shoot and epicotyl. The results show that salt reduces the germination capacity and speed of germination, as it affected the stem and root growth of the genotypes studied. The response of seeds to salt stress varies over time with this case, given that the final percentage of germination and seedling growth differed significantly between the species studied. The variety DZA75: 93,151 has been the most tolerant to salt stress with a germination rate of 81.33% then the variety ESP-85028 has shown the most sensitive to this stress with a germination rate of order of 0.66%.
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