Effect of salinity stress on germination characteristics of Flaxseed (Linum usitatissimum L.)
Subject Areas :Mahdi Hasanvand 1 , Kazem Taleshi 2 , Noshin Osoli 3 , Hmir Hossein Papaei 4 , Milad Dehestani 5
1 - MSc, Department of Agriculture, Khorramabad Branch, Islamic Azad University, Khorramabad, Iran
2 - Department of Agriculture, Khorramabad Branch, Islamic Azad University, Khorramabad, Iran
3 - Department of Agriculture, Khorramabad Branch, Islamic Azad University, Khorramabad, Iran
4 - MSc, Department of Agriculture, Khorramabad Branch, Islamic Azad University, Khorramabad, Iran
5 - MSc, Department of Agriculture, Khorramabad Branch, Islamic Azad University, Khorramabad, Iran
Keywords: salinity stress, Germination" Flaxseed, (Linum usitatissimum L.),
Abstract :
The ability of seeds to germinate at high salt concentration in the soil is crucial importance for the survival and perpetuation of many plant species. Salt stress is a major environmental constraint most limiting plant productivity. The purpose of this study was to investigate the effect of salinity stress on seedling germination characteristics in laboratory conditions. Therefore, in order to investigate the effect of salinity stress on Flaxseed (Linum usitatissimum L.) germination indices, a factorial experiment was conducted in a randomized complete block design with four replications at the Faculty of Agriculture, Islamic Azad University, Khorramabad, in 1396. The experimental treatments included the first factor including three varieties of flax (Iranian, French and Canadian) and the second factor included four levels of salinity (control, 80 and 160 mM / L Nacl). The results of variance analysis showed that different treatments of salinity stress had a significant effect on germination characteristics of flax seed (p <0.05). Mean comparison showed that by increasing salinity, germination speed , germination percentage ,shoot length and root length and root and shoot dry weight decreased (p<0.05). But the allomtric rate increased. Also, Canadian and French cultivars were able to obtain the highest shoot weight in terms of Iranian cultivars in terms of salinity stress conditions.
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