alexa Abstract | Influence of different temperature regimes and water stress on yield components and qualitative characteristics of oil seed in canola (Brassica napus L.)

European Journal of Experimental Biology
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Research Article Open Access

Abstract

In order to study of water stress effect on quantitative and qualitative traits of rapeseed in temperature regimes, an experimental was carried out as a factorial on RCBD with three replications in two years (2012 and 2013).Soil experimental located in Karaj region. Treatments were included planting date factor with six levels consisted of 22 June and 2, 12, 22 July and 1, 11August. Irrigation factor with three levels, normal irrigation and stress was started from flowering and stress was started from pod formation. The main effects of planting date and irrigation on traits of stem diameter and height was statistically significant in level of 1%. However the interactive effect of planting date and irrigation on the mentioned traits was significant in level of 5%. ANOVA for the interactive effects shown RGS003 planted on June 22nd with normal irrigation had the most pods number per plant (81.5) and grain number per pod (19.9). RGS003 planted on June 22nd with normal irrigation had the most yield of grain oil with an average of 1124 kg/ha and RGS003 planted on August 11th with the drought stress started from flowering had the least yield of grain oil with an average of 218 kg/ha. It was also found based on ANOVA for the interactive effects of planting date and irrigation on the total chlorophyll content that the most chlorophyll content was attributed to RGS003 planted June 22nd and normal irrigation with an average of 1.914 mg/g wet weight. The most glucosinolate content was also attributed to RGS003 planted August 11th with the drought stress started from flowering with an average of 29.27 mg/g dry weight. Otherwise RGS003 in the 11August and stress in flowering had the highest erusic acid (1.839%), and in the 22 June and common irrigation had the lowest erusic acid (0.2807%).

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Author(s): Amir Hossein Shirani Rad Ali Khorgami Shahram Rashidi Sharareh Nasr Esfahani Fatemeh Barekati and Vahideh Namvar vahid

Keywords

water stress, Canola, Oil yield, Glucosinolate, Erucic acid

 
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