Paper Details

The effect of drought stress in dry farming conditions on grain yield and some morphologic traits in various bread wheat genotypes

Khoda Rrahm Motamedi Pour, Mohtasham Mohammadi

DOI: https://dx.doi.org/10.12692/ijb/5.10.146-154

Int. J. Biosci. 5(10), 146-154. November, 2014. (PDF)

Abstract:

In order to assess and classify the morphological traits of bread wheat in drought stress conditions (dry farming), 18 bread wheat cultivars were studied. This experiment was performed in the form of a randomized complete blocks design (RCBD) in Gachsaran Dryland Agricultural Research Station during the agricultural years of 2010-2011. Variance of genotypes was significant for the traits, so there was a high genetic diversity among the traits. The studied traits included; agronomic score, spikelets per spike, leaf length, spike weight, grain length, thousand kernel weight (TKW) and grain yield. The results obtained showed that the total weight of the spike had the highest correlation with grain yield in dry farming conditions. Based on the results obtained of tests of resistance to dry stress genotypes of 16, 8 and 6 are the most resistant genotypes to drought stress. Generally, one can conclude that the traits of agronomic score and Spikelets per spike are main traits for recognizing superior genotypes.