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Non‐Mendelian inheritance of gene amplification‐based resistance to glyphosate in Hordeum glaucum (barley grass) from South Australia
Author(s) -
AduYeboah Patricia,
Malone Jenna M,
Gill Gurjeet,
Preston Christopher
Publication year - 2021
Publication title -
pest management science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.296
H-Index - 125
eISSN - 1526-4998
pISSN - 1526-498X
DOI - 10.1002/ps.6518
Subject(s) - mendelian inheritance , biology , hordeum vulgare , glyphosate , inheritance (genetic algorithm) , non mendelian inheritance , weed , gene , population , genetics , botany , hordeum , resistance (ecology) , poaceae , agronomy , demography , sociology , mitochondrial dna
BACKGROUND Hordeum glaucum Steud. is an important grass weed species in South Australia that has evolved resistance to glyphosate. This study investigated the mode of inheritance of glyphosate resistance in this species. RESULTS Hand‐pollination of glyphosate susceptible and resistant populations generated two F 1 individuals, selfed to yield F 2 progenies. In dose–response experiments, the F 2 progenies showed intermediate response between the two parent populations. High variation in EPSPS gene copies was observed among F 2 individuals, with some individuals possessing more gene copies than the resistant parent population. No evidence of a Mendelian single‐gene pattern of inheritance was observed. CONCLUSION Inheritance of gene amplification in H. glaucum is non‐Mendelian. © 2021 Society of Chemical Industry.