Dry matter accumulation in two sunflower cultivars at three planting dates

Detalhes bibliográficos
Autor(a) principal: Sangoi, Luis
Data de Publicação: 2014
Outros Autores: Silva, Paulo Regis Ferreira da
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/13910
Resumo: An experiment was carried out in order to study dry matter accumulation in the different plant parts of two sunflower cultivars, Contisol 711 and Contisol, during grain filling stage at three planting dates, September 5, October 14 and December 14. It was conducted in Guaíba, Rio Grande do Sul State, Brasil, during 1983/84 growing season. Samples were collected weekly from the emergence of first anther until all leaves were senescent. Plants were separated in green leaves, senescent leaves, stems, heads and grains. Linear and quadratic regressions, logarithmic and exponential functions were adjusted to the data obtained. Biological yield, heads and grain weight were higher at September planting date, regardless of cultivar. At this date, for both cultivars all organs had a longer duration. Contisol showed higher biological yieid, leaf and stem weight than 'Contisol 711', in all planting dates. 
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spelling Dry matter accumulation in two sunflower cultivars at three planting datesDistribuição e acúmulo de matéria seca em duas cultivares de girassol em três épocas de semeaduraHelianthus annuus; stems; leaves; grains; heads; biological yield; harvest indexHelianthus annus; caule; folhas; grãos; rendimento biológico; índice de colheitaAn experiment was carried out in order to study dry matter accumulation in the different plant parts of two sunflower cultivars, Contisol 711 and Contisol, during grain filling stage at three planting dates, September 5, October 14 and December 14. It was conducted in Guaíba, Rio Grande do Sul State, Brasil, during 1983/84 growing season. Samples were collected weekly from the emergence of first anther until all leaves were senescent. Plants were separated in green leaves, senescent leaves, stems, heads and grains. Linear and quadratic regressions, logarithmic and exponential functions were adjusted to the data obtained. Biological yield, heads and grain weight were higher at September planting date, regardless of cultivar. At this date, for both cultivars all organs had a longer duration. Contisol showed higher biological yieid, leaf and stem weight than 'Contisol 711', in all planting dates. Com a finalidade de estudar a distribuição e acúmulo de matéria seca nas diferentes estruturas da planta, durante o período de enchimento de grãos de cultivares de girassol (Helianthus annus L.), semeadas em três épocas, foi conduzido um experimento, no Município de Guaíba, RS, em 1983/84. As cultivares Contisol 711 e Contisol foram semeadas em 5 de setembro, 14 de outubro e 14 de dezembro de 1983. A partir do início de antese de cada cultivar até todas as folhas estarem senescentes, foram coletadas, semanalmente, amostras de plantas. Aos dados obtidos foram ajustadas equações de regressão linear e quadrática, funções logarítmica e exponencial. Constatou-se que, na semeadura de setembro, houve maior peso seco nas folhas, grãos e rendimento biológico. lgualmente verificou-se que o período de acúmulo de matéria seca nas folhas e nos capítulos foi mais longo, nesta época. A cultivar Contisol apresentou maior rendimento biológico, bem como maior acúmulo de folhas verdes e colmos do que a cultivar Contisol 711 dentro da mesma época de semeadura. Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraSangoi, LuisSilva, Paulo Regis Ferreira da2014-04-17info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/13910Pesquisa Agropecuaria Brasileira; v.23, n.5, maio 1988; 489-502Pesquisa Agropecuária Brasileira; v.23, n.5, maio 1988; 489-5021678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/13910/7894info:eu-repo/semantics/openAccess2014-09-11T19:05:43Zoai:ojs.seer.sct.embrapa.br:article/13910Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-09-11T19:05:43Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Dry matter accumulation in two sunflower cultivars at three planting dates
Distribuição e acúmulo de matéria seca em duas cultivares de girassol em três épocas de semeadura
title Dry matter accumulation in two sunflower cultivars at three planting dates
spellingShingle Dry matter accumulation in two sunflower cultivars at three planting dates
Sangoi, Luis
Helianthus annuus; stems; leaves; grains; heads; biological yield; harvest index
Helianthus annus; caule; folhas; grãos; rendimento biológico; índice de colheita
title_short Dry matter accumulation in two sunflower cultivars at three planting dates
title_full Dry matter accumulation in two sunflower cultivars at three planting dates
title_fullStr Dry matter accumulation in two sunflower cultivars at three planting dates
title_full_unstemmed Dry matter accumulation in two sunflower cultivars at three planting dates
title_sort Dry matter accumulation in two sunflower cultivars at three planting dates
author Sangoi, Luis
author_facet Sangoi, Luis
Silva, Paulo Regis Ferreira da
author_role author
author2 Silva, Paulo Regis Ferreira da
author2_role author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Sangoi, Luis
Silva, Paulo Regis Ferreira da
dc.subject.por.fl_str_mv Helianthus annuus; stems; leaves; grains; heads; biological yield; harvest index
Helianthus annus; caule; folhas; grãos; rendimento biológico; índice de colheita
topic Helianthus annuus; stems; leaves; grains; heads; biological yield; harvest index
Helianthus annus; caule; folhas; grãos; rendimento biológico; índice de colheita
description An experiment was carried out in order to study dry matter accumulation in the different plant parts of two sunflower cultivars, Contisol 711 and Contisol, during grain filling stage at three planting dates, September 5, October 14 and December 14. It was conducted in Guaíba, Rio Grande do Sul State, Brasil, during 1983/84 growing season. Samples were collected weekly from the emergence of first anther until all leaves were senescent. Plants were separated in green leaves, senescent leaves, stems, heads and grains. Linear and quadratic regressions, logarithmic and exponential functions were adjusted to the data obtained. Biological yield, heads and grain weight were higher at September planting date, regardless of cultivar. At this date, for both cultivars all organs had a longer duration. Contisol showed higher biological yieid, leaf and stem weight than 'Contisol 711', in all planting dates. 
publishDate 2014
dc.date.none.fl_str_mv 2014-04-17
dc.type.none.fl_str_mv
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/13910
url https://seer.sct.embrapa.br/index.php/pab/article/view/13910
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/13910/7894
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
dc.source.none.fl_str_mv Pesquisa Agropecuaria Brasileira; v.23, n.5, maio 1988; 489-502
Pesquisa Agropecuária Brasileira; v.23, n.5, maio 1988; 489-502
1678-3921
0100-104x
reponame:Pesquisa Agropecuária Brasileira (Online)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Pesquisa Agropecuária Brasileira (Online)
collection Pesquisa Agropecuária Brasileira (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv pab@sct.embrapa.br || sct.pab@embrapa.br
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