Chromosomal regions controlling seedling drought resistance in Israeli wild barley, Hordeum spontaneum C. Koch

Guoxiong Chen; Tamar Krugman; Tzion Fahima; Kegui Chen; Yingang Hu; Marion Röder; Eviatar Nevo; Abraham Korol

doi:10.1007/s10722-009-9453-z

Chromosomal regions controlling seedling drought resistance in Israeli wild barley, Hordeum spontaneum C. Koch

Guoxiong Chen, Tamar Krugman, Tzion Fahima, Kegui Chen, Yingang Hu, Marion Röder, Eviatar Nevo, Abraham Korol

Department of Evolutionary and Environmental Biology

Research output: Contribution to journal › Article › peer-review

Abstract

The objective of the present study was to map quantitative trait loci (QTL) controlling drought-resistance traits at seedling stage of Israeli wild barley (Hordeum spontaneum). Mapping was conducted using an F₄ mapping population derived from a cross between genotype WQ23-38 from xeric (Wadi Qilt, 144 mm annual rainfall) and MA10-30 from mesic (Maalot, 790 mm annual rainfall) environments. Obvious segregation was observed for traits including time to wilt, leaf relative elongation rate, recovery rate, shoot regrowth, osmolarity, relative water content, leaf length, and root length with the coefficient of variation ranging from 10 to 77%. Eighteen putative QTL effects were identified (at false discovery rate = 10%) by single-trait analyses and confirmed by multi-trait analysis and multiple interval mapping using a new MultiQTL package. The results of our study suggest that the xeric genotypes adopted survival strategies while the mesic genotypes adopted growth-sustain strategies to cope with drought stress.

Original language	English
Pages (from-to)	85-99
Number of pages	15
Journal	Genetic Resources and Crop Evolution
Volume	57
Issue number	1
DOIs	https://doi.org/10.1007/s10722-009-9453-z
State	Published - Jan 2010

Bibliographical note

Funding Information:
Acknowledgments This work was supported by the following grants: German-Israeli Project Cooperation (grant DIP-B-4.3), the US AID Cooperative Development Research Program (grant TA-MOU-97_CA17-001), One Hundred Talents Project of The Chinese Academy of Sciences, the Israel Discount Bank Chair of Evolutionary Biology, the Ancell-Teicher Research Foundation for Molecular Genetics and Evolution, and the Graduate School of the University of Haifa, Israel. The authors thank Dr. Avigdor Beiles for valuable advice, Mrs. Robin Permut for editing, and Mrs. Ma Yan and Ms. Milade Naela for their field and experimental assistance.

Keywords

Drought resistance
Genetic map
Hordeum spontaneum
QTL mapping
Wild barley

ASJC Scopus subject areas

Ecology, Evolution, Behavior and Systematics
Agronomy and Crop Science
Genetics
Plant Science

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10.1007/s10722-009-9453-z

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title = "Chromosomal regions controlling seedling drought resistance in Israeli wild barley, Hordeum spontaneum C. Koch",

abstract = "The objective of the present study was to map quantitative trait loci (QTL) controlling drought-resistance traits at seedling stage of Israeli wild barley (Hordeum spontaneum). Mapping was conducted using an F4 mapping population derived from a cross between genotype WQ23-38 from xeric (Wadi Qilt, 144 mm annual rainfall) and MA10-30 from mesic (Maalot, 790 mm annual rainfall) environments. Obvious segregation was observed for traits including time to wilt, leaf relative elongation rate, recovery rate, shoot regrowth, osmolarity, relative water content, leaf length, and root length with the coefficient of variation ranging from 10 to 77%. Eighteen putative QTL effects were identified (at false discovery rate = 10%) by single-trait analyses and confirmed by multi-trait analysis and multiple interval mapping using a new MultiQTL package. The results of our study suggest that the xeric genotypes adopted survival strategies while the mesic genotypes adopted growth-sustain strategies to cope with drought stress.",

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author = "Guoxiong Chen and Tamar Krugman and Tzion Fahima and Kegui Chen and Yingang Hu and Marion R{\"o}der and Eviatar Nevo and Abraham Korol",

note = "Funding Information: Acknowledgments This work was supported by the following grants: German-Israeli Project Cooperation (grant DIP-B-4.3), the US AID Cooperative Development Research Program (grant TA-MOU-97_CA17-001), One Hundred Talents Project of The Chinese Academy of Sciences, the Israel Discount Bank Chair of Evolutionary Biology, the Ancell-Teicher Research Foundation for Molecular Genetics and Evolution, and the Graduate School of the University of Haifa, Israel. The authors thank Dr. Avigdor Beiles for valuable advice, Mrs. Robin Permut for editing, and Mrs. Ma Yan and Ms. Milade Naela for their field and experimental assistance.",

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AU - Krugman, Tamar

AU - Fahima, Tzion

AU - Chen, Kegui

AU - Hu, Yingang

AU - Röder, Marion

AU - Nevo, Eviatar

AU - Korol, Abraham

N1 - Funding Information: Acknowledgments This work was supported by the following grants: German-Israeli Project Cooperation (grant DIP-B-4.3), the US AID Cooperative Development Research Program (grant TA-MOU-97_CA17-001), One Hundred Talents Project of The Chinese Academy of Sciences, the Israel Discount Bank Chair of Evolutionary Biology, the Ancell-Teicher Research Foundation for Molecular Genetics and Evolution, and the Graduate School of the University of Haifa, Israel. The authors thank Dr. Avigdor Beiles for valuable advice, Mrs. Robin Permut for editing, and Mrs. Ma Yan and Ms. Milade Naela for their field and experimental assistance.

PY - 2010/1

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N2 - The objective of the present study was to map quantitative trait loci (QTL) controlling drought-resistance traits at seedling stage of Israeli wild barley (Hordeum spontaneum). Mapping was conducted using an F4 mapping population derived from a cross between genotype WQ23-38 from xeric (Wadi Qilt, 144 mm annual rainfall) and MA10-30 from mesic (Maalot, 790 mm annual rainfall) environments. Obvious segregation was observed for traits including time to wilt, leaf relative elongation rate, recovery rate, shoot regrowth, osmolarity, relative water content, leaf length, and root length with the coefficient of variation ranging from 10 to 77%. Eighteen putative QTL effects were identified (at false discovery rate = 10%) by single-trait analyses and confirmed by multi-trait analysis and multiple interval mapping using a new MultiQTL package. The results of our study suggest that the xeric genotypes adopted survival strategies while the mesic genotypes adopted growth-sustain strategies to cope with drought stress.

AB - The objective of the present study was to map quantitative trait loci (QTL) controlling drought-resistance traits at seedling stage of Israeli wild barley (Hordeum spontaneum). Mapping was conducted using an F4 mapping population derived from a cross between genotype WQ23-38 from xeric (Wadi Qilt, 144 mm annual rainfall) and MA10-30 from mesic (Maalot, 790 mm annual rainfall) environments. Obvious segregation was observed for traits including time to wilt, leaf relative elongation rate, recovery rate, shoot regrowth, osmolarity, relative water content, leaf length, and root length with the coefficient of variation ranging from 10 to 77%. Eighteen putative QTL effects were identified (at false discovery rate = 10%) by single-trait analyses and confirmed by multi-trait analysis and multiple interval mapping using a new MultiQTL package. The results of our study suggest that the xeric genotypes adopted survival strategies while the mesic genotypes adopted growth-sustain strategies to cope with drought stress.

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Chromosomal regions controlling seedling drought resistance in Israeli wild barley, Hordeum spontaneum C. Koch

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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