IDENTIFICATION OF HEAT TOLERANCE RESOURCES IN WHEAT RELATIVES

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ARSHAD Y.; ZAHRAVI M.; ABADOUZ GH.R.

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Journal Paper

Paper Information

Journal: JOURNAL OF CROP PRODUCTION RESEARCH (ENVIRONMENTAL STRESSES IN PLANT SCIENCES) Year:2012 | Volume:4 | Issue:2 Page(s): 97-108

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Title

IDENTIFICATION OF HEAT TOLERANCE RESOURCES IN WHEAT RELATIVES

Author(s)

ARSHAD Y. | ZAHRAVI M. | ABADOUZ GH.R. | Issue Writer Certificate

Keywords

HEAT TOLERANCEQ2

GERMPLASMQ2

STRESS TOLERANCE INDEXQ2

DURUMQ2

TURGIDUMQ2

COMPACTUMQ2

DICOCCUMQ2

Abstract

Bread wheat relatives are valuable sources for tolerance to biotic and abiotic stresses. In order to identify heat tolerant accessions in wheat collection of National Plant Gene Bank of Iran, 512 wheat accessions were evaluated in Ahwaz, Iran. The accessions were planted in two separate experiments of heat stress and non-stress in augmented design. Heat stress was induced by late sowing. Fourty-six accessions out of the total wheat relative species survived comprising 32 accessions of T. TURGIDUM ssp. DURUM, eight accessions of T. TURGIDUM ssp. TURGIDUM, five accessions of T. COMPACTUM and one accession of T. DICOCCUM. Some important agronomic and phonological traits were measured. The amount of stress intensity was evaluated 0.71. The largest grain yield of five spikes in non-stress condition (Yp) and in heat stress condition belonged to accessions 40 and 9 (both DURUM), respectively. The accession 34 (durum) had the largest amount for MP, GMP and STI. STI and GMP, among the studied stress tolerance indices had acceptable correlation with Yp and Ys and were identified as suitable indices. The impact of the evaluated traits on STI and GMP was investigated by stepwise regression. The traits entered in regression model were the same for both STI and GMP comprising number of grains per spike in stress and non-stress conditions, 100-grain weight in stress and non-stress conditions and stem diameter in stress condition. The trait 100 grain weight in both regression models of STI and GMP had the largest coefficient indicating its importance. The accessions were distributed in 3D plot of Yp, Ys and STI. Twelve accessions were located in A region (higher Yp and Ys) including accessions 2 (diccoccum) 6, 9, 15, 21, 34, 40 and 42 (durum), 22, 28 (durum), and 3 and 5 (compactum) and were identified as the most heat tolerant ones.

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References

EVALUATION OF HEAT STRESS TOLERANCE INDICES IN WHEAT

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APA: Copy

ARSHAD, Y., ZAHRAVI, M., & ABADOUZ, GH.R.. (2012). IDENTIFICATION OF HEAT TOLERANCE RESOURCES IN WHEAT RELATIVES. JOURNAL OF CROP PRODUCTION RESEARCH (ENVIRONMENTAL STRESSES IN PLANT SCIENCES), 4(2), 97-108. SID. https://sid.ir/paper/182297/en

Vancouver: Copy

ARSHAD Y., ZAHRAVI M., ABADOUZ GH.R.. IDENTIFICATION OF HEAT TOLERANCE RESOURCES IN WHEAT RELATIVES. JOURNAL OF CROP PRODUCTION RESEARCH (ENVIRONMENTAL STRESSES IN PLANT SCIENCES)[Internet]. 2012;4(2):97-108. Available from: https://sid.ir/paper/182297/en

IEEE: Copy

Y. ARSHAD, M. ZAHRAVI, and GH.R. ABADOUZ, “IDENTIFICATION OF HEAT TOLERANCE RESOURCES IN WHEAT RELATIVES,” JOURNAL OF CROP PRODUCTION RESEARCH (ENVIRONMENTAL STRESSES IN PLANT SCIENCES), vol. 4, no. 2, pp. 97–108, 2012, [Online]. Available: https://sid.ir/paper/182297/en

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