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The flowering locus Hr colocalizes with a major QTL affecting winter frost tolerance in Pisum sativum L.

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Title: The flowering locus Hr colocalizes with a major QTL affecting winter frost tolerance in Pisum sativum L.
Authors: Lejeune-Hénaut, I.1 lejeune@mons.inra.fr, Hanocq, E.1, Béthencourt, L., Fontaine, V.1, Delbreil, B.1, Morin, J.2, Petit, A.3, Devaux, R.1, Boilleau, M.1, Stempniak, J.-J.1, Thomas, M.1, Lainé, A.-L.4, Foucher, F.5,6, Baranger, A.7, Burstin, J.8, Rameau, C.5, Giauffret, C.
Source: Theoretical & Applied Genetics. May2008, Vol. 116 Issue 8, p1105-1116. 12p. 1 Diagram, 3 Charts, 1 Graph.
Subjects: Peas, Legumes, Cultivars, Vernalization, Effect of temperature on plants
Abstract: An understanding of the genetic determinism of frost tolerance is a prerequisite for the development of frost tolerant cultivars for cold northern areas. In legumes, it is not known to which extent vernalization requirement or photoperiod responsiveness are necessary for the development of frost tolerance. In pea ( Pisum sativum L.) however, the flowering locus Hr is suspected to influence winter frost tolerance by delaying floral initiation until after the main winter freezing periods have passed. The objective of this study was to dissect the genetic determinism of frost tolerance in pea by QTL analysis and to assess the genetic linkage between winter frost tolerance and the Hr locus. A population of 164 recombinant inbred lines (RILs), derived from the cross Champagne x Terese was evaluated both in the greenhouse and in field conditions to characterize the photoperiod response from which the allele at the Hr locus was inferred. In addition, the population was also assessed for winter frost tolerance in 11 field conditions. Six QTL were detected, among which three were consistent among the different experimental conditions, confirming an oligogenic determinism of frost tolerance in pea. The Hr locus was found to be the peak marker for the highest explanatory QTL of this study. This result supports the hypothesis of the prominent part played by the photoperiod responsiveness in the determinism of frost tolerance for this species. The consistency of three QTL makes these positions interesting targets for marker-assisted selection. [ABSTRACT FROM AUTHOR]
Copyright of Theoretical & Applied Genetics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: The flowering locus Hr colocalizes with a major QTL affecting winter frost tolerance in Pisum sativum L.
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  Data: <searchLink fieldCode="AR" term="%22Lejeune-Hénaut%2C+I%2E%22">Lejeune-Hénaut, I.</searchLink><relatesTo>1</relatesTo><i> lejeune@mons.inra.fr</i><br /><searchLink fieldCode="AR" term="%22Hanocq%2C+E%2E%22">Hanocq, E.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Béthencourt%2C+L%2E%22">Béthencourt, L.</searchLink><br /><searchLink fieldCode="AR" term="%22Fontaine%2C+V%2E%22">Fontaine, V.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Delbreil%2C+B%2E%22">Delbreil, B.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Morin%2C+J%2E%22">Morin, J.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Petit%2C+A%2E%22">Petit, A.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Devaux%2C+R%2E%22">Devaux, R.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Boilleau%2C+M%2E%22">Boilleau, M.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Stempniak%2C+J%2E-J%2E%22">Stempniak, J.-J.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Thomas%2C+M%2E%22">Thomas, M.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Lainé%2C+A%2E-L%2E%22">Lainé, A.-L.</searchLink><relatesTo>4</relatesTo><br /><searchLink fieldCode="AR" term="%22Foucher%2C+F%2E%22">Foucher, F.</searchLink><relatesTo>5,6</relatesTo><br /><searchLink fieldCode="AR" term="%22Baranger%2C+A%2E%22">Baranger, A.</searchLink><relatesTo>7</relatesTo><br /><searchLink fieldCode="AR" term="%22Burstin%2C+J%2E%22">Burstin, J.</searchLink><relatesTo>8</relatesTo><br /><searchLink fieldCode="AR" term="%22Rameau%2C+C%2E%22">Rameau, C.</searchLink><relatesTo>5</relatesTo><br /><searchLink fieldCode="AR" term="%22Giauffret%2C+C%2E%22">Giauffret, C.</searchLink>
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  Data: <searchLink fieldCode="JN" term="%22Theoretical+%26+Applied+Genetics%22">Theoretical & Applied Genetics</searchLink>. May2008, Vol. 116 Issue 8, p1105-1116. 12p. 1 Diagram, 3 Charts, 1 Graph.
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  Data: <searchLink fieldCode="DE" term="%22Peas%22">Peas</searchLink><br /><searchLink fieldCode="DE" term="%22Legumes%22">Legumes</searchLink><br /><searchLink fieldCode="DE" term="%22Cultivars%22">Cultivars</searchLink><br /><searchLink fieldCode="DE" term="%22Vernalization%22">Vernalization</searchLink><br /><searchLink fieldCode="DE" term="%22Effect+of+temperature+on+plants%22">Effect of temperature on plants</searchLink>
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  Data: An understanding of the genetic determinism of frost tolerance is a prerequisite for the development of frost tolerant cultivars for cold northern areas. In legumes, it is not known to which extent vernalization requirement or photoperiod responsiveness are necessary for the development of frost tolerance. In pea ( Pisum sativum L.) however, the flowering locus Hr is suspected to influence winter frost tolerance by delaying floral initiation until after the main winter freezing periods have passed. The objective of this study was to dissect the genetic determinism of frost tolerance in pea by QTL analysis and to assess the genetic linkage between winter frost tolerance and the Hr locus. A population of 164 recombinant inbred lines (RILs), derived from the cross Champagne x Terese was evaluated both in the greenhouse and in field conditions to characterize the photoperiod response from which the allele at the Hr locus was inferred. In addition, the population was also assessed for winter frost tolerance in 11 field conditions. Six QTL were detected, among which three were consistent among the different experimental conditions, confirming an oligogenic determinism of frost tolerance in pea. The Hr locus was found to be the peak marker for the highest explanatory QTL of this study. This result supports the hypothesis of the prominent part played by the photoperiod responsiveness in the determinism of frost tolerance for this species. The consistency of three QTL makes these positions interesting targets for marker-assisted selection. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Theoretical & Applied Genetics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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