Germination, viability and longevity of horseweed (Conyza spp.) seeds as a function of temperature and evaluation periods
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Ciência Rural |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000900202 |
Resumo: | ABSTRACT: In Brazil, horseweed is one of the most important weeds because of the resistance to herbicides and high competitive for the crops. A large of losses were reported in major crops such as soybeans, wheat and corn, where the use a no-tillage system and the herbicide resistance promote better establishment. A correct understanding of the way temperature influences germination enables the prediction of the regions with the highest potential for colonization by this weed and thus facilitates its control. The objective of this study; therefore, was to discern the ways temperature affected the germination, viability and longevity of horseweed seeds. Testing was done at 10, 20 and 30°C, while evaluation occurred on days 0, 15, 30, 45 and 60. Seeds were packed in a nylon mesh bag (5x5cm), with 10g of upland soil (Yellow Red Argissolo, sandy loam texture), placed in transparent plastic boxes at 0 to 0.5cm soil depth, at the temperatures specified. Percentage of remaining seeds, first and second germination counts, abnormal seedlings, and dead, dormant, viable and non-viable seeds, were assessed. Horseweed seeds achieve secondary dormancy at 10, 20 and 30°C, while their quality and the longevity showed damage at 20 and 30°C temperatures. |
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Germination, viability and longevity of horseweed (Conyza spp.) seeds as a function of temperature and evaluation periodssecondary dormancydepthmanagementseed qualityABSTRACT: In Brazil, horseweed is one of the most important weeds because of the resistance to herbicides and high competitive for the crops. A large of losses were reported in major crops such as soybeans, wheat and corn, where the use a no-tillage system and the herbicide resistance promote better establishment. A correct understanding of the way temperature influences germination enables the prediction of the regions with the highest potential for colonization by this weed and thus facilitates its control. The objective of this study; therefore, was to discern the ways temperature affected the germination, viability and longevity of horseweed seeds. Testing was done at 10, 20 and 30°C, while evaluation occurred on days 0, 15, 30, 45 and 60. Seeds were packed in a nylon mesh bag (5x5cm), with 10g of upland soil (Yellow Red Argissolo, sandy loam texture), placed in transparent plastic boxes at 0 to 0.5cm soil depth, at the temperatures specified. Percentage of remaining seeds, first and second germination counts, abnormal seedlings, and dead, dormant, viable and non-viable seeds, were assessed. Horseweed seeds achieve secondary dormancy at 10, 20 and 30°C, while their quality and the longevity showed damage at 20 and 30°C temperatures.Universidade Federal de Santa Maria2018-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000900202Ciência Rural v.48 n.9 2018reponame:Ciência Ruralinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSM10.1590/0103-8478cr20170687info:eu-repo/semantics/openAccessAgostinetto,DirceuVargas,Andrés Antonio MongeRuchel,QueliSilva,Jéssica Dias Gomes daVargas,Leandroeng2018-08-22T00:00:00ZRevista |
dc.title.none.fl_str_mv |
Germination, viability and longevity of horseweed (Conyza spp.) seeds as a function of temperature and evaluation periods |
title |
Germination, viability and longevity of horseweed (Conyza spp.) seeds as a function of temperature and evaluation periods |
spellingShingle |
Germination, viability and longevity of horseweed (Conyza spp.) seeds as a function of temperature and evaluation periods Agostinetto,Dirceu secondary dormancy depth management seed quality |
title_short |
Germination, viability and longevity of horseweed (Conyza spp.) seeds as a function of temperature and evaluation periods |
title_full |
Germination, viability and longevity of horseweed (Conyza spp.) seeds as a function of temperature and evaluation periods |
title_fullStr |
Germination, viability and longevity of horseweed (Conyza spp.) seeds as a function of temperature and evaluation periods |
title_full_unstemmed |
Germination, viability and longevity of horseweed (Conyza spp.) seeds as a function of temperature and evaluation periods |
title_sort |
Germination, viability and longevity of horseweed (Conyza spp.) seeds as a function of temperature and evaluation periods |
author |
Agostinetto,Dirceu |
author_facet |
Agostinetto,Dirceu Vargas,Andrés Antonio Monge Ruchel,Queli Silva,Jéssica Dias Gomes da Vargas,Leandro |
author_role |
author |
author2 |
Vargas,Andrés Antonio Monge Ruchel,Queli Silva,Jéssica Dias Gomes da Vargas,Leandro |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Agostinetto,Dirceu Vargas,Andrés Antonio Monge Ruchel,Queli Silva,Jéssica Dias Gomes da Vargas,Leandro |
dc.subject.por.fl_str_mv |
secondary dormancy depth management seed quality |
topic |
secondary dormancy depth management seed quality |
description |
ABSTRACT: In Brazil, horseweed is one of the most important weeds because of the resistance to herbicides and high competitive for the crops. A large of losses were reported in major crops such as soybeans, wheat and corn, where the use a no-tillage system and the herbicide resistance promote better establishment. A correct understanding of the way temperature influences germination enables the prediction of the regions with the highest potential for colonization by this weed and thus facilitates its control. The objective of this study; therefore, was to discern the ways temperature affected the germination, viability and longevity of horseweed seeds. Testing was done at 10, 20 and 30°C, while evaluation occurred on days 0, 15, 30, 45 and 60. Seeds were packed in a nylon mesh bag (5x5cm), with 10g of upland soil (Yellow Red Argissolo, sandy loam texture), placed in transparent plastic boxes at 0 to 0.5cm soil depth, at the temperatures specified. Percentage of remaining seeds, first and second germination counts, abnormal seedlings, and dead, dormant, viable and non-viable seeds, were assessed. Horseweed seeds achieve secondary dormancy at 10, 20 and 30°C, while their quality and the longevity showed damage at 20 and 30°C temperatures. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000900202 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000900202 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/0103-8478cr20170687 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Universidade Federal de Santa Maria |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria |
dc.source.none.fl_str_mv |
Ciência Rural v.48 n.9 2018 reponame:Ciência Rural instname:Universidade Federal de Santa Maria (UFSM) instacron:UFSM |
instname_str |
Universidade Federal de Santa Maria (UFSM) |
instacron_str |
UFSM |
institution |
UFSM |
reponame_str |
Ciência Rural |
collection |
Ciência Rural |
repository.name.fl_str_mv |
|
repository.mail.fl_str_mv |
|
_version_ |
1749140552944713728 |