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Inheritance of Evolved Glyphosate Resistance in a North Carolina Palmer Amaranth (Amaranthus palmeri) Biotype
Joint Authors
Giacomini, Darci
Jordan, David L.
Whitaker, Jared R.
Chandi, Aman
Milla-Lewis, Susana R.
Preston, Christopher
Westra, Philip
Burton, James D.
York, Alan C.
Source
International Journal of Agronomy
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-09-06
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
Inheritance of glyphosate resistance in a Palmer amaranth biotype from North Carolina was studied.
Glyphosate rates for 50% survival of glyphosate-resistant (GR) and glyphosate-susceptible (GS) biotypes were 1288 and 58 g ha−1, respectively.
These values for F1 progenies obtained from reciprocal crosses (GR×GS and GS×GR were 794 and 501 g ha−1, respectively.
Dose response of F1 progenies indicated that resistance was not fully dominant over susceptibility.
Lack of significant differences between dose responses for reciprocal F1 families suggested that genetic control of glyphosate resistance was governed by nuclear genome.
Analysis of F1 backcross (BC1F1) families showed that 10 and 8 BC1F1 families out of 15 fitted monogenic inheritance at 2000 and 3000 g ha−1 glyphosate, respectively.
These results indicate that inheritance of glyphosate resistance in this biotype is incompletely dominant, nuclear inherited, and might not be consistent with a single gene mechanism of inheritance.
Relative 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) copy number varied from 22 to 63 across 10 individuals from resistant biotype.
This suggested that variable EPSPS copy number in the parents might be influential in determining if inheritance of glyphosate resistance is monogenic or polygenic in this biotype.
American Psychological Association (APA)
Chandi, Aman& Milla-Lewis, Susana R.& Giacomini, Darci& Westra, Philip& Preston, Christopher& Jordan, David L.…[et al.]. 2012. Inheritance of Evolved Glyphosate Resistance in a North Carolina Palmer Amaranth (Amaranthus palmeri) Biotype. International Journal of Agronomy،Vol. 2012, no. 2012, pp.1-7.
https://search.emarefa.net/detail/BIM-452007
Modern Language Association (MLA)
Chandi, Aman…[et al.]. Inheritance of Evolved Glyphosate Resistance in a North Carolina Palmer Amaranth (Amaranthus palmeri) Biotype. International Journal of Agronomy No. 2012 (2012), pp.1-7.
https://search.emarefa.net/detail/BIM-452007
American Medical Association (AMA)
Chandi, Aman& Milla-Lewis, Susana R.& Giacomini, Darci& Westra, Philip& Preston, Christopher& Jordan, David L.…[et al.]. Inheritance of Evolved Glyphosate Resistance in a North Carolina Palmer Amaranth (Amaranthus palmeri) Biotype. International Journal of Agronomy. 2012. Vol. 2012, no. 2012, pp.1-7.
https://search.emarefa.net/detail/BIM-452007
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-452007