Dry matter accumulation in two sunflower cultivars at three planting dates
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | |
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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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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1793416668799565824 |