Evolution effect of salt stress, growth, physiological characteristic and seed yield of spring canola cultivars (Brassica napus L)

Subject Areas : agronomy

Received: 2013-07-11 Accepted : 2014-05-30 Published : 2017-03-05

Keywords: Seed yield, Canola, Relative water content, Salt stress, Photosynthesis,

Abstract :

The recent research was carried out in order to evaluate effects of salt stress on growth and some physiological traits of four spring canola cultivars (Brassica napus L). canola cultivars were Hyola401, Hyola308, Hyola60 and RGS003 and salt stress treatments were applied using salt solutions with EC values of 0 (control), 4, 8 and 12 dsm-1. The experiment was conducted as factorial in basis RCBD with three replications in Dezful research station in Safi Abad, 2010-2011. The results showed that salt stress caused significant decrease in photosynthesis, chlorophyll content, dry matter weight per plant and grain yield per plant. Salt stress effects on traits such as stomatal conductance and relative water content of leaf that caused decrease in photosynthesis and dry matter weight per plant, plant height, grain weight per plant and grain yield in plant. The study showed that the use of some traits such as photosynthesis rate and chlorophyll content that have positive correlation with dry matter weight per plant and grain yield per plant may have been suggested as an important selection criterion for salt-tolerance in brassica.

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