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Germination ecology of Ambrosia artemisiifolia L. and Ambrosia trifida L. biotypes suspected of glyphosate resistance

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2013
284.pdf (769.4Kb)
Authors
Dinelli, Giovanni
Marotti, Ilaria
Catizone, Pietro
Bosi, Sara
Tanveer, Asif
Abbas, Rana Nadeem
Pavlović, Danijela
Article (Published version)
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Abstract
The germination ecology of Ambrosia artemisiifolia and A. trifida glyphosate susceptible biotypes sampled in marginal areas, was compared with that of the same species but different biotypes suspected of glyphosate resistance, common and giant ragweed, respectively. The suspected resistant biotypes were sampled in Roundup ReadyA (R) soybean fields. Within each weed species, the seeds of the biotype sampled in marginal area were significantly bigger and heavier than those of the biotype sampled in the soybean fields. A. artemisiifolia biotypes exhibited a similar dormancy and germination, while differences between A. trifida biotypes were observed. A. artemisiifolia biotypes showed similar threshold temperature for germination, whereas, the threshold temperature of the susceptible A. trifida biotype was half as compared to that of the resistant A. trifida biotype. No significant differences in emergence as a function of sowing depth were observed between susceptible A. artemisiifolia an...d suspected resistant A. trifida biotype, while at a six-cm seedling depth the emergence of the A. artemisiifolia susceptible biotype was 2.5 times higher than that of the A. trifida suspected resistant biotype. This study identified important differences in seed germination between herbicide resistant and susceptible biotypes and relates this information to the ecology of species adapted to Roundup ReadyA (R) fields. Information obtained in this study supports sustainable management strategies, with continued use of glyphosate as a possibility.

Keywords:
Ambrosia artemisiifolia / Ambrosia trifida / Glyphosate resistance / Seed ecology
Source:
Central European Journal of Biology, 2013, 8, 3, 286-296
Publisher:
  • Versita, Warsaw

DOI: 10.2478/s11535-013-0135-z

ISSN: 1895-104X

WoS: 000313067800008

Scopus: 2-s2.0-84871948545
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URI
http://plantarum.izbis.bg.ac.rs/handle/123456789/286
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