Tirgan, New Bread Wheat Cultivar, for Cultivation in Northern Warm and Humid Zone of Iran

The new bread wheat cultivar Tirgan with spring growth habit type received from the International Maize and Wheat Improvement Center (CIMMYT) was evaluated in 2009-10 in international Nurseries. In the cropping season 2010-11, this cultivar was cultivated in preliminary regional wheat yield trials (PRWYT) of the northern climate. In the cropping season 2011-12 in advanced regional wheat yield trials (ARWYT) Tirgan cultivar was selected with an average yield of 5.731 tha-1 compared to the average yield of the control cultivars (Morvarid and Gonbad) with 5.372 tha-1. Also, in the cropping season 2012-13 and 2013-14, in the elit regional wheat yield trial (ERWYT), yield, grain yield and other traits were investigated in four stations of the northern climate (Gorgan, Moghan, Sari and Gonbad). The average yield of this cultivar in ERWYT traits was 5.893 tha-1, and the average of the check cultivars, Morvarid and Gonbad, was 5.401 and 5.356 tha-1 respectively. Due to the acceptable resistance of this variety over several years, to fusarium head blight, powdery mildew and high resistance to yellow and leaf rusts, high and stable grain yield potential with very good baking quality compared to the control varieties, this cultivar is a good substitute for the old varieties in the plains of the Caspian coast, including the Moghan plain in Ardabil province, Golestan and Mazandaran provinces, and it can increase wheat production in the region along with other varieties and have an effective role and act as one of the tools to manage and control various diseases by increasing diversity in this fully stressed climate in terms of various diseases.