Change in sowing date combined with water stress affects canola seed oil and fatty acid ‎composition

Amir Hossein Shirani Rad,Esmaeil Hadidi Masouleh,Hamidreza Zakerin,Saeed Sayfzadeh,Zahra Biyouk

doi:10.5377/nexo.v33i02.10776

Amir Hossein Shirani Rad, Esmaeil Hadidi Masouleh + Show 3 more

Open Access

https://doi.org/10.5377/nexo.v33i02.10776

Copy DOI

Abstract

To study the effect of sowing date and water stress on qualitative traits of canola, an experiment was conducted for two years in Iran. The sowing date and irrigation were in two levels as the main factors, and five canola cultivars and hybrids were included as the subfactors. In normal sowing date and normal irrigation conditions, The Tassilo hybrid with a high seed yield and seed oil yield (6139 and 2905 kg ha-1, respectively) can be effective in the cultivation of canola in temperate cold regions with dry and semi-arid climates. In the conditions of delayed cultivation and late season drought stress, the same hybrid with the highest seed yield and seed oil yield (2935 and 1273 kg ha-1, respectively) and the least amount of erucic acid (0.4%) and glucosinolate content (22.9 μmol g-1) is recommended for the delayed cultivation conditions together with late season drought stress.

Highlights

Canola (Brassica napus L.) is one of the most important oily seeds in the world, whose importance is due to the high quality of its oil and meal that has the potential of a renewable source of biofuels (Qian et al, 2009)
The cultivars were significantly different in terms of traits of seed yield, seed oil content, seed oil yield, palmitic acid, oleic acid, linoleic acid, erucic acid and glucosinolate at the level of 1% and in terms of traits of linolenic acid at the level of 5%
The interaction effect of sowing date × irrigation on the seed yield, seed oil content and seed oil yield was significant at the level of 5% and in terms of linoleic acid, it was significant at the level of 1%

Summary

Introduction

Canola (Brassica napus L.) is one of the most important oily seeds in the world, whose importance is due to the high quality of its oil and meal that has the potential of a renewable source of biofuels (Qian et al, 2009). In an irrigation management plan, the information about the plant, soil, climate, irrigation system, water distribution method, and management objectives should be considered This is very important especially to arid and semi-arid areas where water resources are very limited (Hanson, Schwankl, & Fulton, 1999). Canola is one of the agricultural crops heavily dependent on farm management and its yield can be improved by observing breeding and crop improvement principles To this end, besides introducing high yielding cultivars, the maximum genetic capacity of the cultivars can be used in different climatic conditions that part of this objective can be gained by employing management practices such as sowing at the right time to improve the quantitative and qualitative yield of canola. The selection of superior cultivar(s) in terms of quantitative and qualitative traits can be effective in increasing the cultivation area of canola to more than 150 thousand hectares through preserving the quality of the produced oil and meal, and this is a developmental innovation of the present research

Methods

Results

Conclusion