Effect of irrigation regimes on some quantity and quality traits of three bread wheat cultivars in Isfahan province
Subject Areas : Journal of Plant Ecophysiology
H. Dehghanzadeh
1
(
گروه علوم کشاورزی، دانشگاه پیام نور، مرکز تیران، تیران، ایران
)
Keywords: " Drought stress", "Total dry matter", "protein percent", "wet gluten percent", "sediment" coefficient",
Abstract :
To determine the effect of irrigation regimes on some quantity and quality traits of three bread wheat cultivars in Isfahan, two one-year field experiments were carried out in a split plot layout arranged as randomized complete blocks design with four replicates in two consecutive growing seasons; 2012 - 2013 and 2013 - 2014. The main plots considered irrigation regimes (irrigation after 75, 95 and 115 mm cumulative evaporation from class A evaporation pan), and sub-plots considered three wheat cultivars (Sepahan, Ghods and Pishtazs).Results showed that irrigation after 75 and 95 mm cumulative evaporation did not differ significantly for morphological traits, yield and yield components. Delay in irrigation from 95 to 115 mm cumulative pan evaporation significantly reduced grain yield and its components and increased protein percent. Ghods and Pishtaz cultivars had the highest and the lowest number of grain per spike and the lowest and the highest thousand kernel weight and the lowest and the highest grain yield, respectively. It was concluded that by irrigation wheat after 95 mm cumulative pan evaporation, water could be saved by 22% with no significant loss in yield, while grain protein increased by 1.77 percent.
