Evaluation of herbage yield stability in several accessions of Agropyron trichophorum in drought stress and non-stress environments, using AMMI model and other stability analysis methods

Document Type : Research Paper

Authors

1 M.Sc., Plant breeding, Islamic Azad University, Borujerd, I.R. Iran

2 Assoc. Prof., Research Institute of Forest and Range Lands, Agricultural Research, Education and Extension Organization (AREEO), Tehran, I.R. Iran

3 M.Sc., Center of Agricultural Research and Natural Resources of Kermanshah, Agricultural Research, Education and Extension Organization (AREEO), Kermanshah, I.R. Iran, Email: hooshmandp@yahoo.com

4 Department of Agriculture, Payame Noor University

Abstract

Dry forage yield of 24 accessions of Agropyron trichophorum were investigated by a randomized complete block design with three replications at two environments of normal irrigation and rainfed conditions for two years at Islam Abade Gharb research station, Kermanshah, Iran. Analysis variance showed significant variation (P>0.01) between the studied accessions and the environments. Interaction effect of accession×environment was significant at 1% level. Two, interaction principal components from AMMI, analysis expressed 96.77% of the interaction variance and were significant at 1% level. The accessions of 12-13, 313, 314, 8-4, 10-7 and 7-5 were classified as superior accessions for dry forage yield  based on Duncan's test (p<0.05) and cluster analysis and located in the same group. Accessions 8-4 and 10-7 had the highest general stability for forage yield based on interaction principal components and stability parameters, being suitable to be introduced for breeding programs in Kermanshah climate. Accessions 7-5, 313, 12-13 showed specific adaptation with normal irrigation conditions and accession 314 had specific adaptation to stress conditions, being sutable to be introduced in breeding programs, especially with emphasis on Kermanshah rainfed conditions.

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References

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Iranian Journal of Rangelands and Forests Plant Breeding and Genetic Research
Volume 25, Issue 2 - Serial Number 50
September 2017
Pages 358-371

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