Response of some new irrigated wheat line and cultivars to cut of terminal irrigation

Access to water is limited in many parts of the world and the drought process is more than any other environmental factor is limiting plant’s growth and crop production. In this study, quantitative and qualitative traits of Triticum aestivum (Triticum aestivum) under irrigation at the end of the growing season, as a randomized complete block design with three replications, were conducted at a Research Field in Bukan County was studied. The main factor of moisture restriction (S) was two levels of S1: optimal moisture conditions and S2: Moisture constraint with irrigation cut off at the seed filling stage and in the event of rainfall, preventing precipitation by drainage during the filling stage. The second factor (C) is five types of wheat, including cultivars C92-5 and C91-4, Mihan, Heidari and pishgam. Tension treatments at the block and wheat cultivars in the block were placed. Drought stress reduced the traits (plant height, internode length, panicle length, number of seeds per spike, grain yield and biology, 1000 grain weight and harvest index). Among the cultivars used in this experiment, Heidari variety was superior to other cultivars in terms of traits, and in some cases, it had a significant superiority. For example, in the weight of a thousand seeds and number of seeds per spike, the cultivar Mihan and the number of spikes per square meter, the pioneer was superior to the rest of the cultivars. In conditions of drought stress, heydari, Mihan and pishgam cultivars were superior to the other two cultivars.