ارزیابی تاثیر پذیری عملکرد و اجزا عملکرد کلزا ( (Brassica napus L. از پلیمرهای سوپر جاذب در شرایط مختلف تنش خشکی

Arid and semi- arid climate in Iran affect most areas therefore recent droughts had added water deficit problems. Super absorbent hydro gels polymer can store different amounts of water and the ability to maintain and increase soil water storage. This properties is important to cope with drought stress conditions and reduce the adverse effects of drought on crops. Thus in order to study evaluation affected yield and yield component of canola from super absorbent hydro gels polymer in different drought stress conditions a field experiment was conducted using a split-plot layout with randomized complete block design in three replications, three levels of drought stress consist of non stress(control), stress in end of flowering stage and stress in maturity seed stage were compared in main plots and three levels of super absorbent hydro gels polymer consist of non application(control), application of 150 kg/ha and application of 225kg/ha, were applied as sub-plots, cultivar application was Zarffam. Result of variance analysis showed that various level of stress had significant effect on plant height, stem diameter, siliquae number per plant, grain number per siliquae and relative water content traits and with increasing of stress level all traits were decreased, super absorbent treatment had significant effect in (p<1%) for all traits thus with increasing of super absorbent hydro gels measure all traits had increased, highest seed yield was observed from control treatment(non stress) with 2991kh/ha and in interaction between control(non stress)×225kg super absorbent hydro gels had highest seed yield.
Key words: Canola, Drought stress, Relative water content, Super absorbent polymer.