Selection of hull-less barley lines using the selection index of ideal genotype (SIIG) in Ahvaz and Darab regions

Document Type : Research Paper

Authors

1 Seed and Plant Improvement Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran

2 Assistant professor, Seed and Plant Improvement Department, Fars Agricultural and Natural Resources Research Center, Agricultural Research, Education and Extension Organization (AREEO), Darab, iran

3 Crop and Horticultural Science Research Department, Ahvaz Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Ahvaz, iran

4 Seed and Plant Improvement Department, Agricultural Research, Education and Extension Organization (AREEO), Karaj, iran

5 Seed and Plant Improvement Department, Agricultural Research, Education and Extension Organization (AREEO)

6 Crop and Horticultural Science Research Department, Fars Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO),

Abstract

Abstract
Background and objectives: Among cereals, barley (Hordeum vulgare L.) has the widest geographical range of distribution. In recent years, this crop has been received more attention due to its potential use as feed. The purpose of this study was to evaluate and select the best hull-less barley lines with high yield and desirable agronomic traits using the selection index of ideal genotype.
Materials and methods: In order to selection of the superior hull-less barley lines in warm regions of Iran, a set of 72 pure lines was investigated in an augment design with three checks (including Loot cultivar and two promising lines EHB-87-4 and EHB-85-9). This research was conducted in Fars (Darab Station) and Khuzestan (Ahvaz) Centers of Agricultural Research and Education and Natural Resources during the 2020-2021 cropping year. To select the best hull-less barley lines for each of regions and also to select the best lines for both regions in terms of grain yield and other studied traits, the selection index of ideal genotype (SIIG) was used. This index was calculated based on grain yield, number of days to heading, number of days to physiological maturity, plant height and 1000-grains weight.
Results: The results of analysis of variance showed that there were no significant differences among the blocks in both Ahvaz and Darab regions (except for 1000-grains weight in Darab). The values of heritability for all measured were low, so that the highest and lowest values were estimated for the number of days to maturity (0.37) and grain yield (0.01), respectively. Moreover, the maximum values for number of days to heading and to physiological maturity, plant height, and grain yield were recorded in the Darab region. The results of SIIG index identified 19 and 24 hull-less barley lines with SIIG≥ 0.600 and SIIG≥ 0.500 for Ahvaz and Darab, respectively.
 Conclusion:According to our results, line numbers 52, 22, 33, 66, 5, 53, 24, 48, 18, 27, 51, 25, 81, 21, 46 and 19 were selected and recommended to further investigation.

Keywords

References

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Journal of Crop Production
Volume 15, Issue 2
July 2022
Pages 161-181

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