Investigation of Mitigated Effects of K+ on Some Physiological Traits, Yield and Yield Components in Canola Plant (Brassica nupus L. Var. Hyola330) Under Salinity Stress (NaCl)

Document Type : Research Article

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Abstract

Potassium Chloride (KCl) is used as a source of nutrients in agricultural development and also used as relieve salinity stress. In order to study of mitigation effects of K+ in salinity (NaCl) at canola plant (Brassica napus L. Var Hayola330), an experiment was carried out at research green house college agriculture Ferdowsi University of Mashhad, Iran, 2011. The experiment was managed at factorial arrangement base on compeletly randomized design in three replication and treatments included: NaCl (0, 30, 60 and 90 mM) and KCl (0 and 20 mM). Results showed that applied 20 mM KCl and 30 mM NaCl treatment was increased  traits as relative water content (RWC), photosynthesis, number pod per plant and 100 seed weight in compare of control. The maximum seed weight per plant with 1.21 g was obtain from applied 20 mM KCl and 30 mM NaCl treatment and the minimum of this trait was observed in zero mM KCl and 90 mM NaCl treatment. In high level of NaCl (30 and 60 Mm), increase application of KCl could not improve all traits. There was significant correlation between seed weight per plant and number pod per plant (r=55**), seed per pod (r=47*) and there was also significant positive correlation between grain weight per plant and  biomass and photosynthesis traits. In addition results showed that application Potassium Chloride (KCl) have diverse behaviour in different level of salinity and was increased some traits in compare of control  in any level of salinity.

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