Year 2022, Volume 7, Issue 1

Year : 2022
Volume : 7
Issue : 1
Authors : Maria KARAGIANNI, Maria MOSCHOU, Theano B. LAZARIDOU
Abstract : In order to study the effect of drought stress seven bread wheat (Triticum aestivum L.) cultivars (Acheloos, Apollonia, Generoso, Doirani, Nestos, Strimonas, and Orpheas) and seven durum wheat (Triticum durum L.) cultivars (Sifnos, Anna, Elpida, Thraki, Papadakis, Athos, Mexikali 81) were evaluated at three levels of drought treatment using polyethylene glycol in a randomized complete block design with 10 replications. For this purpose, seedlings of the aforementioned genotypes were cultured in pots with three different concentrations of polyethylene glycol (5, 10% and 15% PEG 8000) whereas irrigation without PEG was used as control. During the experiment, the length of spike with awns, the length of spike, the plants height, the number of tillering per plant, and the concentration of proline in the plants treated were measured. The drought treatment reduced the length of spike and the plant height of the cultivars studied, whereas it increased the length of spike with awns in bread wheat cultivars. It was concluded that there are considerable differences in drought resistance between the genotypes studied. The drought stress, caused by the polyethylene glycol, increased the concentration of proline in the cultivars tested. The highest value of proline was estimated in plants of bread wheat cultivar Strimonas and in plants of durum wheat cultivar Sifnos. So consequently, we can conclude that Strimonas and Sifnos were the most tolerant cultivars of the two species. Orpheas (bread wheat) and Thraki (durum wheat) had the lowest concentration of proline, so Orpheas and Thraki were considered the most sensitive cultivars.
For citation : Karagianni, M., Moschou, M., Lazaridou, T. B. (2022). Evaluation of Greek bread and durum wheat cultivars for drought tolerance using polyethylene glycol. AGROFOR International Journal, Volume 7. Issue No. 1. pp. 124-130. DOI:10.7251/AGRENG2201124K
Keywords : drought stress, tolerance, polyethylene glycol, proline.
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