Analyses of a multi-parent population derived from two diverse alfalfa germplasms: testcross evaluations and phenotype–DNA associations.
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| Title: | Analyses of a multi-parent population derived from two diverse alfalfa germplasms: testcross evaluations and phenotype–DNA associations. |
|---|---|
| Authors: | Maureira-Butler, I. J.1,2 imaureira@inia.cl, Udall, J. A.1,3, Osborn, T. C.4 |
| Source: | Theoretical & Applied Genetics. Oct2007, Vol. 115 Issue 6, p859-867. 9p. 2 Charts, 1 Graph. |
| Subjects: | Alfalfa, Forage plants, Phenotypes, DNA, Genomics, Genotype-environment interaction, Genetic research |
| Abstract: | In a previous study, we showed that the genetic variation present in the Medicago sativa subsp. sativa Peruvian and M. sativa subsp. falcata WISFAL germplasms could be used to improve forage yields when favorable alleles were recombined and used in hybrid combination with cultivated alfalfa. In this paper, we present testcross forage yield and fall growth data for two seasons of a C0 population generated after intermating the Peruvian × WISFAL population for several generations. In addition, we conducted marker-trait association analysis as an attempt to identify Peruvian and WISFAL genomics regions affecting the targeted traits. Five and seven genomic regions were found significantly associated with forage yield and fall growth, respectively. In the case of fall growth, alleles from both accessions were positively associated with plant height. However, more alleles from WISFAL were positively associated with forage yield than from Peruvian. WISFAL is known for its winter hardiness and genomic regions with large effects on winter survival may have masked the effect of forage yield from Peruvian. The fact that most of the genomic regions discovered in this study have been previously associated with traits involved in winter hardiness validates our findings and suggests that associations between DNA fragments and agronomic traits can be detected without the necessity of developing bi-parental mapping populations. [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.) | |
| Database: | Engineering Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 26638340 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Analyses of a multi-parent population derived from two diverse alfalfa germplasms: testcross evaluations and phenotype–DNA associations. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Maureira-Butler%2C+I%2E+J%2E%22">Maureira-Butler, I. J.</searchLink><relatesTo>1,2</relatesTo><i> imaureira@inia.cl</i><br /><searchLink fieldCode="AR" term="%22Udall%2C+J%2E+A%2E%22">Udall, J. A.</searchLink><relatesTo>1,3</relatesTo><br /><searchLink fieldCode="AR" term="%22Osborn%2C+T%2E+C%2E%22">Osborn, T. C.</searchLink><relatesTo>4</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Theoretical+%26+Applied+Genetics%22">Theoretical & Applied Genetics</searchLink>. Oct2007, Vol. 115 Issue 6, p859-867. 9p. 2 Charts, 1 Graph. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Alfalfa%22">Alfalfa</searchLink><br /><searchLink fieldCode="DE" term="%22Forage+plants%22">Forage plants</searchLink><br /><searchLink fieldCode="DE" term="%22Phenotypes%22">Phenotypes</searchLink><br /><searchLink fieldCode="DE" term="%22DNA%22">DNA</searchLink><br /><searchLink fieldCode="DE" term="%22Genomics%22">Genomics</searchLink><br /><searchLink fieldCode="DE" term="%22Genotype-environment+interaction%22">Genotype-environment interaction</searchLink><br /><searchLink fieldCode="DE" term="%22Genetic+research%22">Genetic research</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: In a previous study, we showed that the genetic variation present in the Medicago sativa subsp. sativa Peruvian and M. sativa subsp. falcata WISFAL germplasms could be used to improve forage yields when favorable alleles were recombined and used in hybrid combination with cultivated alfalfa. In this paper, we present testcross forage yield and fall growth data for two seasons of a C0 population generated after intermating the Peruvian × WISFAL population for several generations. In addition, we conducted marker-trait association analysis as an attempt to identify Peruvian and WISFAL genomics regions affecting the targeted traits. Five and seven genomic regions were found significantly associated with forage yield and fall growth, respectively. In the case of fall growth, alleles from both accessions were positively associated with plant height. However, more alleles from WISFAL were positively associated with forage yield than from Peruvian. WISFAL is known for its winter hardiness and genomic regions with large effects on winter survival may have masked the effect of forage yield from Peruvian. The fact that most of the genomic regions discovered in this study have been previously associated with traits involved in winter hardiness validates our findings and suggests that associations between DNA fragments and agronomic traits can be detected without the necessity of developing bi-parental mapping populations. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab 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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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s00122-007-0614-1 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 9 StartPage: 859 Subjects: – SubjectFull: Alfalfa Type: general – SubjectFull: Forage plants Type: general – SubjectFull: Phenotypes Type: general – SubjectFull: DNA Type: general – SubjectFull: Genomics Type: general – SubjectFull: Genotype-environment interaction Type: general – SubjectFull: Genetic research Type: general Titles: – TitleFull: Analyses of a multi-parent population derived from two diverse alfalfa germplasms: testcross evaluations and phenotype–DNA associations. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Maureira-Butler, I. J. – PersonEntity: Name: NameFull: Udall, J. A. – PersonEntity: Name: NameFull: Osborn, T. C. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 10 Text: Oct2007 Type: published Y: 2007 Identifiers: – Type: issn-print Value: 00405752 Numbering: – Type: volume Value: 115 – Type: issue Value: 6 Titles: – TitleFull: Theoretical & Applied Genetics Type: main |
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