Mohammad Reza Naghavi, Marouf Khalili, Alireza Pour Aboughadareh
Department of Agriculture, Payame Noor University, PO Box 19395-3697, Tehran, Iran.
Department of Crop Production and Breeding, Faculty of Agriculture, Imam Khomeini International University, Iran
Key words: Yield, Yield components, Canola, Water deficit.
Water deficit stress considered as one of the most important limiting factors for canola (Brassica napus L.) growth and productivity in Iran. A factorial experiment on the basis of RCB design with three replications was conducted in 2010, to evaluate the effects of water deficit stress (I1, I2 and I3) on yield and yield components of canola cultivars. Canola cultivars, including ‘Hyola 308’, ‘Amica’, ‘Heros’ and ‘Sarigol’ as first factor, and the second factor was two levels of water deficit stress, including I2 (100mm), I3 (125mm) and normal irrigation (I1= 75mm) evaporation from class A pan. Results indicated that the interaction between water deficit stress and cultivars affected yield, grain per pod, pod per plant and length pod (p≤0.01). ‘Hyola 308’ and ‘Sarigol’ showed highest and lowest yields under stress conditions. In addition, water deficit stress reduced biological yield, harvest index, and yield components in the two stress levels studied. Further the highest reduce of traits were at I1 to I2. In general, ‘Hyola 308’ and ‘Sarigol’ can be the most tolerant and sensitive related to the other cultivars, respectively.
Get the original articles in Source: Volume 7, Number 2, August 2015 – IJAAR
Published By: International Network for Natural Sciences