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Assessment of morpho-physiological characteristics in common and wild barley cultivars under dehydration condition

Document Type : Research Paper

Authors

1 Graduate M.Sc. Student, Department of Agronomy and Plant Breeding, College of Aburaihan, University of Tehran, Pakdasht, Iran

2 Associate Professor, Department of Agronomy and Crop Breeding, College of Aburaihan, University of Tehran, Pakdasht, Iran

3 Assistant Professor, Department of Physiology, Agricultural Biotechnology Research Institute of Iran, Karaj, Iran

4 Assistant Professor, Department of Agronomy and Crop Breeding, College of Aburaihan, University of Tehran, Pakdasht, Iran

5 Assistant Professor, Department of Cereal Research, Seed and Plant Improvement Institute, Karaj, Iran

6 M.Sc. Student of Biotechnology, Agricultural Biotechnology Research Institute of Iran, Karaj, Iran

Abstract

In order to study the reaction of barley genotypes to drought, an experiment was conducted in a factorial
design based on CRD for two wild ecotypes and four crop genotypes of barley in greenhouse. In this
study, the barley genotypes and wild ecotypes as the first factor and irrigation treatment with three levels
include 70 percent of water holding capacity of soil, 30 and 10 percent as the second factor were
considered as treatments. Analysis of growth and other morphological characteristics such as tillers, plant
height and leaf number and leaf area per plant and some physiological characteristics including the
relative water content, leaf chlorophyll content, osmotic potential, osmotic adjustment, stomatal
conductance, canopy temperature in each three treatments were measured. Analysis of variance showed
that the effect of drought on all traits and differences between genotypes were significant. Results of
correlation revealed that there is a significant and direct relationship between relative water content with
osmotic potential and percentage of dried material. Path analysis identified that osmotic potential had the
most direct effect on died material. The 41-1 and Morocco genotypes showed greater sensitivity than
other genotypes to the applied stress.

Keywords

References
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Journal of Crops Improvement
Volume 16, Issue 1 - Serial Number 1
April 2014
Pages 85-98
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