Chemical Control and Morphoanatomical Analysis of Leaves of Different Populations of Sourgrass
ABSTRACT Digitaria insularis has been selected by frequent glyphosate applications both in no-till areas and in fruit orchards. The objective of this paper was to evaluate control efficacy of D. insularis populations by glyphosate, alone and mixed with quizalofop-p-tefuryl, as well as classify them for herbicide sensitivity as susceptible, moderately susceptible and tolerant. This study also aimed to evaluate the relations between herbicide sensitivity and morphoanatomic features of leaf tissues. For chemical control, the experiment was conducted in a completely randomized design, with a 12 x 4 factorial arrangement with four replications. Twelve populations of D. insularis were treated with glyphosate alone at two concentrations (1.44 and 2.16 kg a.e. ha-1) and with the mixture of glyphosate (2.16 kg a.e. ha-1) and quizalofop-p-tefuryl (0.12 kg a.i. ha-1). One treatment without herbicide application was maintained for each plant population. Evaluations about the morphoanatomic features and wax content of leaves from the twelve plant populations were made under laboratory conditions. Populations 3, 5, 6 and 8 were considered to be susceptible; 9, 10 and 12 were considered as moderately susceptible; 1, 2, 4, 7 and 11 were considered tolerant to glyphosate. However, populations within each group (susceptible, moderately susceptible and tolerant) did not have similar characteristics that justify their response to glyphosate. Differences relative to herbicide translocation and/or plant physiology could account for the chemical control results for these populations.
Main Authors: | , , , |
---|---|
Format: | Digital revista |
Language: | English |
Published: |
Sociedade Brasileira da Ciência das Plantas Daninhas
2017
|
Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100202 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
oai:scielo:S0100-83582017000100202 |
---|---|
record_format |
ojs |
spelling |
oai:scielo:S0100-835820170001002022017-08-02Chemical Control and Morphoanatomical Analysis of Leaves of Different Populations of SourgrassGOMES,L.J.P.SANTOS,J.I.GASPARINO,E.C.CORREIA,N.M. Digitaria insularis glyphosate tolerance genetic variability ABSTRACT Digitaria insularis has been selected by frequent glyphosate applications both in no-till areas and in fruit orchards. The objective of this paper was to evaluate control efficacy of D. insularis populations by glyphosate, alone and mixed with quizalofop-p-tefuryl, as well as classify them for herbicide sensitivity as susceptible, moderately susceptible and tolerant. This study also aimed to evaluate the relations between herbicide sensitivity and morphoanatomic features of leaf tissues. For chemical control, the experiment was conducted in a completely randomized design, with a 12 x 4 factorial arrangement with four replications. Twelve populations of D. insularis were treated with glyphosate alone at two concentrations (1.44 and 2.16 kg a.e. ha-1) and with the mixture of glyphosate (2.16 kg a.e. ha-1) and quizalofop-p-tefuryl (0.12 kg a.i. ha-1). One treatment without herbicide application was maintained for each plant population. Evaluations about the morphoanatomic features and wax content of leaves from the twelve plant populations were made under laboratory conditions. Populations 3, 5, 6 and 8 were considered to be susceptible; 9, 10 and 12 were considered as moderately susceptible; 1, 2, 4, 7 and 11 were considered tolerant to glyphosate. However, populations within each group (susceptible, moderately susceptible and tolerant) did not have similar characteristics that justify their response to glyphosate. Differences relative to herbicide translocation and/or plant physiology could account for the chemical control results for these populations.info:eu-repo/semantics/openAccessSociedade Brasileira da Ciência das Plantas Daninhas Planta Daninha v.35 20172017-01-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100202en10.1590/s0100-83582017350100008 |
institution |
SCIELO |
collection |
OJS |
country |
Brasil |
countrycode |
BR |
component |
Revista |
access |
En linea |
databasecode |
rev-scielo-br |
tag |
revista |
region |
America del Sur |
libraryname |
SciELO |
language |
English |
format |
Digital |
author |
GOMES,L.J.P. SANTOS,J.I. GASPARINO,E.C. CORREIA,N.M. |
spellingShingle |
GOMES,L.J.P. SANTOS,J.I. GASPARINO,E.C. CORREIA,N.M. Chemical Control and Morphoanatomical Analysis of Leaves of Different Populations of Sourgrass |
author_facet |
GOMES,L.J.P. SANTOS,J.I. GASPARINO,E.C. CORREIA,N.M. |
author_sort |
GOMES,L.J.P. |
title |
Chemical Control and Morphoanatomical Analysis of Leaves of Different Populations of Sourgrass |
title_short |
Chemical Control and Morphoanatomical Analysis of Leaves of Different Populations of Sourgrass |
title_full |
Chemical Control and Morphoanatomical Analysis of Leaves of Different Populations of Sourgrass |
title_fullStr |
Chemical Control and Morphoanatomical Analysis of Leaves of Different Populations of Sourgrass |
title_full_unstemmed |
Chemical Control and Morphoanatomical Analysis of Leaves of Different Populations of Sourgrass |
title_sort |
chemical control and morphoanatomical analysis of leaves of different populations of sourgrass |
description |
ABSTRACT Digitaria insularis has been selected by frequent glyphosate applications both in no-till areas and in fruit orchards. The objective of this paper was to evaluate control efficacy of D. insularis populations by glyphosate, alone and mixed with quizalofop-p-tefuryl, as well as classify them for herbicide sensitivity as susceptible, moderately susceptible and tolerant. This study also aimed to evaluate the relations between herbicide sensitivity and morphoanatomic features of leaf tissues. For chemical control, the experiment was conducted in a completely randomized design, with a 12 x 4 factorial arrangement with four replications. Twelve populations of D. insularis were treated with glyphosate alone at two concentrations (1.44 and 2.16 kg a.e. ha-1) and with the mixture of glyphosate (2.16 kg a.e. ha-1) and quizalofop-p-tefuryl (0.12 kg a.i. ha-1). One treatment without herbicide application was maintained for each plant population. Evaluations about the morphoanatomic features and wax content of leaves from the twelve plant populations were made under laboratory conditions. Populations 3, 5, 6 and 8 were considered to be susceptible; 9, 10 and 12 were considered as moderately susceptible; 1, 2, 4, 7 and 11 were considered tolerant to glyphosate. However, populations within each group (susceptible, moderately susceptible and tolerant) did not have similar characteristics that justify their response to glyphosate. Differences relative to herbicide translocation and/or plant physiology could account for the chemical control results for these populations. |
publisher |
Sociedade Brasileira da Ciência das Plantas Daninhas |
publishDate |
2017 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100202 |
work_keys_str_mv |
AT gomesljp chemicalcontrolandmorphoanatomicalanalysisofleavesofdifferentpopulationsofsourgrass AT santosji chemicalcontrolandmorphoanatomicalanalysisofleavesofdifferentpopulationsofsourgrass AT gasparinoec chemicalcontrolandmorphoanatomicalanalysisofleavesofdifferentpopulationsofsourgrass AT correianm chemicalcontrolandmorphoanatomicalanalysisofleavesofdifferentpopulationsofsourgrass |
_version_ |
1756390593427144704 |