Document Type : Research Paper
Authors
1
Associate Prof., seed and plant improvement institute, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran.
2
Associate Prof., Yazd Agricultural and Natural Resources Research Center, Agricultural Research, Education and Extension Organization (AREEO), Iran
3
Assistant Prof, Sistan Agricultural and Natural Resources Research Center, Agricultural Research, Education and Extension Organization (AREEO), Iran
4
Associate Prof., seed and plant improvement institute, Agricultural Research, Education and Extension Address: Seed and Plant Improvement Institute, Department of Cereals
Abstract
This research was carried out with the aim of evaluating the genetic resources of barley germplasm of the National Plant Gene Bank of Iran under drought stress conditions and identifying tolerant genotypes. Therefore, 50 genotypes of the barley collection from the hot and dry climate of Iran were evaluated under drought stress conditions. Genotypes were evaluated in two consecutive crop years along with 6 commercial varieties of barley including Nimroz, Yusuf, Goharan, Mehr and Khatam. The statistical design used was complete randomized block with three replications in two conditions of normal irrigation and drought stress in Yazd research station and Zehak research station in Sistan province. In drought stress conditions, irrigation was stopped after stem elongation in 50% of the genotypes. Based on the results of compound analysis of traits, the triple interaction effect of genotype in drought stress in year was significant for all traits. Components analysis under normal and drought stress conditions in Yazd in both years had almost similar results and showed that genotype number 50 and Nosrat cultivar were superior to other genotypes. Components analysis at the Zehak station in two crop years shows the different response of genotypes in different years. t The different results in the second year compared to the first year are due to the higher intensity of stress in this year. In this situation, the stability of genotypes is very important, based on AMMI stability statistics, genotypes number 27, 23 and 34 were identified as more stable genotypes in this experiment.
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