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Type: Journal article
Title: Inheritance of evolved glyphosate resistance in Lolium rigidum (Gaud.)
Author: Colwill, D.
Powles, S.
Hawkes, T.
Preston, C.
Citation: Theoretical and Applied Genetics, 2001; 102(4):545-550
Publisher: Springer-Verlag
Issue Date: 2001
ISSN: 0040-5752
Statement of
D. F. Lorraine-Colwill, S. B. Powles, T. R. Hawkes and C. Preston
Abstract: Resistance to the non-selective herbicide, glyphosate, has evolved recently in several populations of Lolium rigidum (Gaud.). Based upon the observed pattern of inheritance, glyphosate resistant and susceptible populations are most probably homozygous for glyphosate resistance and susceptibility, respectively. When these populations were crossed and the F1 progeny treated with glyphosate, the dose response behavior was intermediate to that of the parental populations. This observation, coupled with an absence of a difference between reciprocal F1 populations, suggests that glyphosate resistance is inherited as an incompletely dominant nuclear-encoded trait. The segregation of resistance in F12S backcrosses suggests that the major part of the observed resistance is conferred by a single gene, although at low glyphosate treatments other genes may also contribute to plant survival. It appears from this study that a single nuclear gene confers resistance to glyphosate in one population of L. rigidum.
Keywords: Glyphosate; herbicide resistance; genetics; lolium rigidum
Description: The original publication can be found at
RMID: 0020010061
DOI: 10.1007/s001220051680
Appears in Collections:Agriculture, Food and Wine publications

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