Application of herbicides on parental lines (A clearfield® and R) of hybrid rice at post-flowering stage for production.

Detalhes bibliográficos
Autor(a) principal: MONDO, V. H. V.
Data de Publicação: 2019
Outros Autores: NASCENTE, A. S.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
Texto Completo: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1105831
Resumo: The hypothesis of this study is based on the fact that parental line A-Clearfield® (male-sterile genotype) (Clearfield provide has tolerance to imidazolinone herbicides) and line R (male-fertile genotype - pollinator) is sensitive to the herbicide. So after flowering, we may apply an imidazolinone herbicide (Kifix®) to the plantings to kill line R, and harvesting only the hybrid seeds. The objective was to test the use of imidazolinone herbicide on parental lines (A-Clearfield® which is resistant to Kifix herbicide) and R no Clearfield® (non-resistant to Kifix genotype) as a strategy to improve production of hybrid seed in rice. Two trials were conducted to evaluate (A) the use of doses of imidazolinone herbicide in line R (plant control, number of grains per panicles, grain yield and seed germination; and (B) the use of different doses of imidazolinone herbicide in line A Clearfield® grain yield and seed germination. Trials were conducted in the tropical region of Brazil in randomized complete block design in factorial scheme 5 x 2 x 2. The treatments were the combination of five Kifix (Imazapyr, 525 g kg-1 + Imazapic, 175 g kg-1) rates applied on two no Clearfield® rice genotypes (first trial) or Clearfield® rice genotypes (second trial) in two growing seasons. The results showed application of herbicide doses higher than 150 g ha-1 after full flowering stage can cause reduction in growth and development of no Clearfield® rice. The use of Kifix herbicide in CL (Clearfield®) rice cultivars did not affect the grain yield, mass of 1000 grains, seed germination, first count germination, seedling emergence and seedling length. New researches should be done to define plant arrangement suitable for line R (no Clearfield®) and line A Clearfield® to find the optimum condition to produce hybrid seeds. From our results, we could see that the use of parental line A Clearfield® with a line R no Clearfield®, after flowering, provided the production of only hybrid seeds in the area, without reduction in seed quality.
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spelling Application of herbicides on parental lines (A clearfield® and R) of hybrid rice at post-flowering stage for production.Arroz híbridoKifixAgronomic strategiesArrozOryza SativaHerbicidaImidazolinone herbicidesRiceHybridsThe hypothesis of this study is based on the fact that parental line A-Clearfield® (male-sterile genotype) (Clearfield provide has tolerance to imidazolinone herbicides) and line R (male-fertile genotype - pollinator) is sensitive to the herbicide. So after flowering, we may apply an imidazolinone herbicide (Kifix®) to the plantings to kill line R, and harvesting only the hybrid seeds. The objective was to test the use of imidazolinone herbicide on parental lines (A-Clearfield® which is resistant to Kifix herbicide) and R no Clearfield® (non-resistant to Kifix genotype) as a strategy to improve production of hybrid seed in rice. Two trials were conducted to evaluate (A) the use of doses of imidazolinone herbicide in line R (plant control, number of grains per panicles, grain yield and seed germination; and (B) the use of different doses of imidazolinone herbicide in line A Clearfield® grain yield and seed germination. Trials were conducted in the tropical region of Brazil in randomized complete block design in factorial scheme 5 x 2 x 2. The treatments were the combination of five Kifix (Imazapyr, 525 g kg-1 + Imazapic, 175 g kg-1) rates applied on two no Clearfield® rice genotypes (first trial) or Clearfield® rice genotypes (second trial) in two growing seasons. The results showed application of herbicide doses higher than 150 g ha-1 after full flowering stage can cause reduction in growth and development of no Clearfield® rice. The use of Kifix herbicide in CL (Clearfield®) rice cultivars did not affect the grain yield, mass of 1000 grains, seed germination, first count germination, seedling emergence and seedling length. New researches should be done to define plant arrangement suitable for line R (no Clearfield®) and line A Clearfield® to find the optimum condition to produce hybrid seeds. From our results, we could see that the use of parental line A Clearfield® with a line R no Clearfield®, after flowering, provided the production of only hybrid seeds in the area, without reduction in seed quality.VITOR HENRIQUE VAZ MONDO, SIN; ADRIANO STEPHAN NASCENTE, CNPAF.MONDO, V. H. V.NASCENTE, A. S.2019-02-12T23:47:53Z2019-02-12T23:47:53Z2019-02-1220192020-02-12T11:11:11Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleAustralian Journal of Crop Science, v. 13, n. 1, p. 131-137, 2019.1835-2707http://www.alice.cnptia.embrapa.br/alice/handle/doc/110583110.21475/ajcs.19.13.01.p1514enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2019-02-12T23:47:59Zoai:www.alice.cnptia.embrapa.br:doc/1105831Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542019-02-12T23:47:59falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542019-02-12T23:47:59Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Application of herbicides on parental lines (A clearfield® and R) of hybrid rice at post-flowering stage for production.
title Application of herbicides on parental lines (A clearfield® and R) of hybrid rice at post-flowering stage for production.
spellingShingle Application of herbicides on parental lines (A clearfield® and R) of hybrid rice at post-flowering stage for production.
MONDO, V. H. V.
Arroz híbrido
Kifix
Agronomic strategies
Arroz
Oryza Sativa
Herbicida
Imidazolinone herbicides
Rice
Hybrids
title_short Application of herbicides on parental lines (A clearfield® and R) of hybrid rice at post-flowering stage for production.
title_full Application of herbicides on parental lines (A clearfield® and R) of hybrid rice at post-flowering stage for production.
title_fullStr Application of herbicides on parental lines (A clearfield® and R) of hybrid rice at post-flowering stage for production.
title_full_unstemmed Application of herbicides on parental lines (A clearfield® and R) of hybrid rice at post-flowering stage for production.
title_sort Application of herbicides on parental lines (A clearfield® and R) of hybrid rice at post-flowering stage for production.
author MONDO, V. H. V.
author_facet MONDO, V. H. V.
NASCENTE, A. S.
author_role author
author2 NASCENTE, A. S.
author2_role author
dc.contributor.none.fl_str_mv VITOR HENRIQUE VAZ MONDO, SIN; ADRIANO STEPHAN NASCENTE, CNPAF.
dc.contributor.author.fl_str_mv MONDO, V. H. V.
NASCENTE, A. S.
dc.subject.por.fl_str_mv Arroz híbrido
Kifix
Agronomic strategies
Arroz
Oryza Sativa
Herbicida
Imidazolinone herbicides
Rice
Hybrids
topic Arroz híbrido
Kifix
Agronomic strategies
Arroz
Oryza Sativa
Herbicida
Imidazolinone herbicides
Rice
Hybrids
description The hypothesis of this study is based on the fact that parental line A-Clearfield® (male-sterile genotype) (Clearfield provide has tolerance to imidazolinone herbicides) and line R (male-fertile genotype - pollinator) is sensitive to the herbicide. So after flowering, we may apply an imidazolinone herbicide (Kifix®) to the plantings to kill line R, and harvesting only the hybrid seeds. The objective was to test the use of imidazolinone herbicide on parental lines (A-Clearfield® which is resistant to Kifix herbicide) and R no Clearfield® (non-resistant to Kifix genotype) as a strategy to improve production of hybrid seed in rice. Two trials were conducted to evaluate (A) the use of doses of imidazolinone herbicide in line R (plant control, number of grains per panicles, grain yield and seed germination; and (B) the use of different doses of imidazolinone herbicide in line A Clearfield® grain yield and seed germination. Trials were conducted in the tropical region of Brazil in randomized complete block design in factorial scheme 5 x 2 x 2. The treatments were the combination of five Kifix (Imazapyr, 525 g kg-1 + Imazapic, 175 g kg-1) rates applied on two no Clearfield® rice genotypes (first trial) or Clearfield® rice genotypes (second trial) in two growing seasons. The results showed application of herbicide doses higher than 150 g ha-1 after full flowering stage can cause reduction in growth and development of no Clearfield® rice. The use of Kifix herbicide in CL (Clearfield®) rice cultivars did not affect the grain yield, mass of 1000 grains, seed germination, first count germination, seedling emergence and seedling length. New researches should be done to define plant arrangement suitable for line R (no Clearfield®) and line A Clearfield® to find the optimum condition to produce hybrid seeds. From our results, we could see that the use of parental line A Clearfield® with a line R no Clearfield®, after flowering, provided the production of only hybrid seeds in the area, without reduction in seed quality.
publishDate 2019
dc.date.none.fl_str_mv 2019-02-12T23:47:53Z
2019-02-12T23:47:53Z
2019-02-12
2019
2020-02-12T11:11:11Z
dc.type.driver.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv Australian Journal of Crop Science, v. 13, n. 1, p. 131-137, 2019.
1835-2707
http://www.alice.cnptia.embrapa.br/alice/handle/doc/1105831
10.21475/ajcs.19.13.01.p1514
identifier_str_mv Australian Journal of Crop Science, v. 13, n. 1, p. 131-137, 2019.
1835-2707
10.21475/ajcs.19.13.01.p1514
url http://www.alice.cnptia.embrapa.br/alice/handle/doc/1105831
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
collection Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
repository.name.fl_str_mv Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv cg-riaa@embrapa.br
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