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

Bibliographic Details
Main Author: MONDO, V. H. V.
Publication Date: 2019
Other Authors: NASCENTE, A. S.
Format: Article
Language: cmn
Source: Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
Download full: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1105831
Summary: 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 MONDO, V. H. V.NASCENTE, A. S.VITOR HENRIQUE VAZ MONDO, SIN; ADRIANO STEPHAN NASCENTE, CNPAF.2019-02-12T23:47:53Z2019-02-12T23:47:53Z2019-02-1220192020-02-12T11:11:11ZAustralian 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.p1514The 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.Made available in DSpace on 2019-02-12T23:47:53Z (GMT). No. of bitstreams: 1 CNPAF2019ajcp.pdf: 88215 bytes, checksum: 491a1272467a2d8f96324d30e0f93017 (MD5) Previous issue date: 2019-02-12cncmnArrozOryza SativaHerbicidaImidazolinone herbicidesRiceHybridsArroz híbridoKifixAgronomic strategiesApplication of herbicides on parental lines (A clearfield® and R) of hybrid rice at post-flowering stage for production.info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleinfo: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:EMBRAPAORIGINALCNPAF2019ajcp.pdfapplication/pdf88215http://www.alice.cnptia.embrapa.br/bitstream/doc/1105831/1/CNPAF2019ajcp.pdf491a1272467a2d8f96324d30e0f93017MD51TEXTCNPAF2019ajcp.pdf.txtCNPAF2019ajcp.pdf.txtExtracted texttext/plain5090http://www.alice.cnptia.embrapa.br/bitstream/doc/1105831/2/CNPAF2019ajcp.pdf.txt21fc07cdf614bdf449ef287c04de4ea0MD52THUMBNAILCNPAF2019ajcp.pdf.jpgCNPAF2019ajcp.pdf.jpgIM Thumbnailimage/jpeg4985http://www.alice.cnptia.embrapa.br/bitstream/doc/1105831/3/CNPAF2019ajcp.pdf.jpg289214aab04bd007765538dabf13f239MD53doc/11058312019-02-12 21:47:59.942oai:www.alice.cnptia.embrapa.br:doc/1105831Repositório de PublicaçõesPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar: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.institution.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
topic Arroz híbrido
Kifix
Agronomic strategies
Arroz
Oryza Sativa
Herbicida
Imidazolinone herbicides
Rice
Hybrids
dc.subject.thesagro.none.fl_str_mv Arroz
Oryza Sativa
Herbicida
dc.subject.nalthesaurus.none.fl_str_mv 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.updated.pt_BR.fl_str_mv 2020-02-12T11:11:11Z
dc.date.accessioned.fl_str_mv 2019-02-12T23:47:53Z
dc.date.available.fl_str_mv 2019-02-12T23:47:53Z
dc.date.created.fl_str_mv 2019-02-12
dc.date.issued.fl_str_mv 2019
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dc.identifier.citation.fl_str_mv Australian Journal of Crop Science, v. 13, n. 1, p. 131-137, 2019.
dc.identifier.uri.fl_str_mv http://www.alice.cnptia.embrapa.br/alice/handle/doc/1105831
dc.identifier.issn.none.fl_str_mv 1835-2707
dc.identifier.doi.none.fl_str_mv 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
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