Results 1 to 10 of about 151 (130)

Shikimate accumulation, glyphosate absorption and translocation in horseweed biotypes [PDF]

Planta Daninha, 2015
In Brazil, few research works on mechanisms of weed resistance to glyphosate have been conducted so far. Therefore, this research aimed to study analytical procedures determining the relation between the concentration of plant shikimate after glyphosate application and the plant resistance to this herbicide; and evaluate the glyphosate absorption and ...
CARDINALI, V.C.B., DIAS, A.C.R., MUELLER, T.C., ABERCROMBIE, L., STEWART JR., C.N., TORNISIELO, V.L., CHRISTOFFOLETI, P.J.   +6 more
openaire   +5 more sources

Low temperatures enhance the absorption and translocation of 14C-glyphosate in glyphosate-resistant Conyza sumatrensis [PDF]

Journal of Plant Physiology, 2019
Influence of low temperatures on the glyphosate efficacy was studied in glyphosate-resistant (R) and -susceptible (S) Conyza sumatrensis biotypes. For this purpose, the physiological and enzymatic aspects involved were characterized under two growing temperature regimes [high (30/20 °C) and low 15/5 °C temperatures day/night].
Candelario Palma-Bautista, Ricardo Alcántara-de la Cruz, Antonia M Rojano-Delgado   +2 more
exaly   +6 more sources

Glyphosate translocation in herbicide tolerant plants Translocação do glyphosate em plantas tolerantes ao herbicida

Planta Daninha, 2013
The objective of this study was to evaluate glyphosate translocation in glyphosate-tolerant weed species (I. nil, T. procumbens and S. latifolia) compared to glyphosate-susceptible species (B. pilosa). The evaluations of 14C-glyphosate absorption and translocation were performed at 6, 12, 36 and 72 hours after treatment (HAT) in I. nil and B.
L Galon, E.A Ferreira, I Aspiazú, G Concenço, A.F Silva, A.A Silva, L Vargas   +6 more
openaire   +3 more sources

Translocação do glyphosate em biótipos de azevém (Lolium multiflorum) Glyphosate translocation in Italian ryegrass biotypes (Lolium multiflorum)

Planta Daninha, 2006
Foram avaliadas neste trabalho a absorção foliar e a translocação do glyphosate por biótipos de azevém (Lolium multiflorum) sensíveis e resistentes a esse herbicida. Para isso, aplicou-se 14C-glyphosate utilizando-se uma microsseringa de precisão, adicionando-se 10 µL da calda sobre a face adaxial da primeira folha com lígula totalmente visível, quando
E.A. Ferreira, J.B. Santos, A.A. Silva, J.A. Oliveira, L. Vargas   +4 more
openaire   +3 more sources

Glyphosate translocation in hairy fleabane (Conyza bonariensis) biotypes Translocação do glyphosate em biótipos de buva (Conyza bonariensis)

Planta Daninha, 2008
The objective of this work was to evaluate the translocation of glyphosate in C. bonariensis plants resistant and susceptible to that herbicide. The 14C-glyphosate was mixed with commercial gyhphosate (800 g ha-1) and applied on the center of the adaxial face of a third node leaf, using a micro syringe, and adding 10 µL of a solution with specific ...
E.A. Ferreira, L. Galon, I. Aspiazú, A.A. Silva, G. Concenço, A.F. Silva, J.A. Oliveira, L. Vargas   +7 more
openaire   +3 more sources

Absorção, translocação e exsudação radicular de glyphosate em clones de eucalipto: clones Absorption, translocation and radicular glyphosate exudation in Eucalyptus sp

Planta Daninha, 2009
Objetivou-se com este trabalho avaliar a absorção, translocação e exsudação radicular de glyphosate por dois clones de eucalipto: 2277 e 531. O 14C-glyphosate foi aplicado na concentração de 1.440 g ha-1, distribuída uniformemente no terceiro e no quarto limbo foliar a partir do ápice caulinar, com radioatividade aproximada de 0,030 μCi.
A.F.L. Machado, L.R. Ferreira, L.D.T. Santos, J.B. Santos, F.A. Ferreira, R.G. Viana   +5 more
openaire   +3 more sources

Source-sink relationships of wheat plants obtained by the application of systemic herbicides [PDF]

Pesquisa Agropecuária Brasileira, 2021
: The objective of this work was to evaluate the potential of solute translocation among stems of wheat (Triticum aestivum), by the application of the systemic herbicides clethodim and glyphosate. The experiments were carried out in greenhouse conditions,
Samuel Luiz Fioreze, Robson Pelissari Drun, Ana Flávia Wuaden, Volni Mazzuco, James Cruz de Oliveira   +4 more
doaj   +2 more sources

First Case of Glyphosate Resistance in Bromus catharticus Vahl.: Examination of Endowing Resistance Mechanisms

Frontiers in Plant Science, 2021
Bromus catharticus Vahl. has been used as a valuable forage crop, but it has also been noted as a weed of winter crops and an invader in several countries. In Argentina, a putative glyphosate-resistant population of B.
Marcos Yanniccari, Marcos Yanniccari, José G. Vázquez-García, María E. Gómez-Lobato, María E. Gómez-Lobato, Antonia M. Rojano-Delgado, Pedro L. da C. A. Alves, Rafael De Prado   +7 more
doaj   +1 more source

Mechanism(s) of Glyphosate Resistance in a Selected Plantago lanceolata (L.) R Biotype

Agronomy, 2021
In 2003, a glyphosate-resistant plantago (Plantago lanceolata L.) population located in the Robertson district of South Africa was subjected to different glyphosate dosages and the highest dosage (7200 g a.e.
Vhuthu Ndou, Petrus Jacobus Pieterse, Dirk Jacobus Brand, Alvera Vorster, Amandrie Louw, Ethel Phiri   +5 more
doaj   +1 more source

Glyphosate translocation in herbicide tolerant plants [PDF]

Planta Daninha, 2013
The objective of this study was to evaluate glyphosate translocation in glyphosate-tolerant weed species (I. nil, T. procumbens and S. latifolia) compared to glyphosate-susceptible species (B. pilosa). The evaluations of 14C-glyphosate absorption and translocation were performed at 6, 12, 36 and 72 hours after treatment (HAT) in I. nil and B.
Galon, L, Ferreira, E.A, Aspiazú, I, Concenço, G, Silva, A.F, Silva, A.A, Vargas, L   +6 more
openaire   +3 more sources