Evaluation of irrigation levels and its impact on quality and quantity performance of wheat

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Date: Sept. 2011
Publisher: American-Eurasian Network for Scientific Information
Document Type: Report
Length: 3,389 words
Lexile Measure: 1440L

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Abstract :

Heat stress and consequently drought stress conditions are the main causes of reduced wheat yield in most regions of Iran. On the other hand, reduction of water sources demands more logical management for greater productivity of land and water. For this purpose, in order to determine the effect of different levels of irrigation and to evaluate responses of six genotypes of bread wheat, an experiment was conducted in the Research Farm of University. Under-study wheat genotypes were cultivated as a split plot based on randomized complete blocks with three replications. Main factor included irrigation levels (1- normal irrigation, 2- drought stress) and sub-factor included wheat genotypes. Qualitative and quantitative traits were measured such as one-thousand grain weight, biological yield, harvest index, grain yield, protein and gluten. According to results of variance analysis, there were meaningful differences between under-study genotypes except biological yield for total traits. Also, for irrigation levels, it was seen meaningful differences for biological yield, grain yield, protein and gluten. Only about harvest index there was meaningful difference in interaction between genotype x irrigation levels. Under drought stress conditions in the grain filling stage, number of grain per spike and grain yield had been decreased. Also, drought stress caused an increase in protein and gluten content in understudy genotypes. The results showed that genotypes 4057, Sabalan and Ruzi-84 had higher yield and protein than other genotypes. Key words: Bread wheat, end-season drought stress, quantity, quality

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Source Citation   

Gale Document Number: GALE|A252848661