http://www.cnr.it/ontology/cnr/individuo/prodotto/ID76254
Glyphosate resistance of two Italian Lolium populations. (Contributo in atti di convegno)
- Type
- Label
- Glyphosate resistance of two Italian Lolium populations. (Contributo in atti di convegno) (literal)
- Anno
- 2009-01-01T00:00:00+01:00 (literal)
- Alternative label
Collavo A., Barbieri G., De Prado R., Sattin M., (2009)
Glyphosate resistance of two Italian Lolium populations.
in XII Congress SEMh, XIX Congreso ALAM, II Congress IBCM,, Lisboa, 10-13 November 2009
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Collavo A., Barbieri G., De Prado R., Sattin M., (literal)
- Pagina inizio
- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
- http://dialnet.unirioja.es/servlet/libro?codigo=403588 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
- Note
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Consiglio Nazionale delle Ricerche, Istituto di Biologia Agro-ambientale e Forestale, Legnaro (PD) Italy
Monsanto Agricoltura Italia S.p.A. Milano Italy
Universidad de Cordoba, Dep. Quimica Agricola y Edafologia, Cordoba, Spain. (literal)
- Titolo
- Glyphosate resistance of two Italian Lolium populations. (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#isbn
- 978-972-8669-44-7 (literal)
- Abstract
- Greenhouse and laboratory experiments were conducted to investigate two
Lolium spp. populations from a northern Italian vineyard (biotype \"R-332\") and a
southern Italian olive grove (biotype \"R-336\") that were not controlled by the
registered rates of glyphosate. The fraction of resistant (R) plants of each population
was determined through screenings using two doses of glyphosate and three doses of
ACCase inhibitors: cycloxydim and fluazifop. Shikimate accumulation at two doses
was measured spectrophotometrically at 24, 48, 72, 96 and 216 hours after treatment.
A quick germination dose-response test in petri dishes using glyphosate solutions at
different concentrations was set up to select the R individuals within the population for
further investigations. The R seedlings were discriminated on the basis of shoot and
root development. The screening results confirmed resistance outlining the following
profile for the northern R-332 biotyope: 84% (Standard Error 1.4) and 56% (3.2) of
survivors and 104% (6.6) and 43% (3.7) of fresh weight at lower (360 g a.e. ha-1) and
higher doses (1440 g a.e. ha-1) respectively, referred to the untreated check. Southern
R-336 biotype: 98% (0.25) and 88% (3.1) of survivors and 110% (2.9) and 60% (3.5)
of fresh weight. Both ACCase inhibitors controlled the glyphosate resistant biotypes.
The shikimate accumulation clearly discriminated the R populations from the
susceptible (S-204) at the lower dose while at the maximum dose applied the northern
population had an accumulation comparable to the S pop but R plants fully recovered
in 21 days. The southern population did not accumulate shikimate as the S population
neither at the higher level. The quick test outlined a concentration above 100 ?M to
discriminate S from R populations. (literal)
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