IDENTIFYING QTLS ASSOCIATED WITH SALINITY TOLERANCE IN EARLY STAGES OF BARLEY GERMINATION

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KHALILI MAROUF; MOHAMMADIAN RAHIM

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Journal: Crop Biotechnology Year:2016 | Volume:5 | Issue:13 Page(s): 41-55

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Information Journal Paper

Title

IDENTIFYING QTLS ASSOCIATED WITH SALINITY TOLERANCE IN EARLY STAGES OF BARLEY GERMINATION

Author(s)

KHALILI MAROUF | MOHAMMADIAN RAHIM | Issue Writer Certificate

Keywords

BARLEYQ2

GERMINATIONQ2

IDENTIFICATION OF QTLQ2

SALINITY STRESSQ1

Abstract

Salinity is one of the main osmotic stresses that limit plants growth and development through changes in osmotic and ionic balances. In order to mapping of genomic regions of controlling quantitative trait locus (QTLs), related to salinity tolerance in grain BARLEY and assessment of associated indices, an experiment was conducted during 2015 using 72 double haploid lines of BARLEY along with their parents (Stepto and Morex) in randomized complete block design (RCBD) with two replications, at three conditions including normal and two salinity levels of NaCl (100 and 200 mM NaCl). Investigated traits in this study were coefficient of velocity of GERMINATION, final GERMINATION percentage, mean GERMINATION time, GERMINATION rate index and average GERMINATION speed. QTL analysis using composite interval mapping (CIM) was performed based on mean of three environments. Overall, for different traits 47 QTL with LOD≥2.5 was identified and 7 additive-by-additive significant epistatic effects were observed. Total phenotypic variance explained by the QTLs varied from 29.97 to 77.15 percent, which the lowest related to GERMINATION rate index under stress conditions of 200 mM and the highest related to coefficient of velocity of GERMINATION in normal conditions. The highest LOD (8.27) was obtained for coefficient of velocity of GERMINATION on chromosome of 4Hb under 100 mM stress conditions. Stable QTLs in three environments as well as linked markers could be used in the marker assisted selection (MAS) to improve GERMINATION characteristics under salinity conditions at different trials replicated over years.

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APA: Copy

KHALILI, MAROUF, & MOHAMMADIAN, RAHIM. (2016). IDENTIFYING QTLS ASSOCIATED WITH SALINITY TOLERANCE IN EARLY STAGES OF BARLEY GERMINATION. JOURNAL OF CROP BIOTECHNOLOGY, 5(13), 41-55. SID. https://sid.ir/paper/226831/en

Vancouver: Copy

KHALILI MAROUF, MOHAMMADIAN RAHIM. IDENTIFYING QTLS ASSOCIATED WITH SALINITY TOLERANCE IN EARLY STAGES OF BARLEY GERMINATION. JOURNAL OF CROP BIOTECHNOLOGY[Internet]. 2016;5(13):41-55. Available from: https://sid.ir/paper/226831/en

IEEE: Copy

MAROUF KHALILI, and RAHIM MOHAMMADIAN, “IDENTIFYING QTLS ASSOCIATED WITH SALINITY TOLERANCE IN EARLY STAGES OF BARLEY GERMINATION,” JOURNAL OF CROP BIOTECHNOLOGY, vol. 5, no. 13, pp. 41–55, 2016, [Online]. Available: https://sid.ir/paper/226831/en

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