Physiological characteristics of three cassava cultivars
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/15667 |
Resumo: | Root production, harvest index, and leaf area index of three cassava cultivars (Manihot esculenta Crantz) Branca de Santa Catarina, IAC-12-829, and IAC-7-127- Iracema were not significantly affected by the planting densities (10,000, 16,666 and 25,000 plants/ha). The harvest index approached asymptotically the value 0.67. Cultivars with the heaviest stem had the lightest root. Maximum leaf area index achieved was 4.0 for all varieties. Cultivars IAC-12-829 and Branca de Santa Catarina had the highest root yield, while Branca de Santa Catarina had the highest plant weight. Maximum crop growth rate were, respectively, 11,5 g . m-2. day-1 , for Branca de Santa Catarina; 10,2 g . m-2 . day-1 for IAC-12-829; and 8.8 g . m-2 - day-1 for IAC-7-127- Iracema. Maximum root growth rate followed the same sequence with 6.9, 6.3, and 6.2 g m-2 . day-1, respectively. Accumulation of dry matter in the roots began only after the plants had approximately 270 g . m-2. |
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Physiological characteristics of three cassava cultivarsCaracterísticas fisiológicas de três cultivares de mandiocagrowth analysis; physiological indexes; logistic function; harvest index; planting density; leaf area indexanálise de crescimento; índices fisiológicos; função logística; índice de colheita; densidade de plantio; índice de área foliarRoot production, harvest index, and leaf area index of three cassava cultivars (Manihot esculenta Crantz) Branca de Santa Catarina, IAC-12-829, and IAC-7-127- Iracema were not significantly affected by the planting densities (10,000, 16,666 and 25,000 plants/ha). The harvest index approached asymptotically the value 0.67. Cultivars with the heaviest stem had the lightest root. Maximum leaf area index achieved was 4.0 for all varieties. Cultivars IAC-12-829 and Branca de Santa Catarina had the highest root yield, while Branca de Santa Catarina had the highest plant weight. Maximum crop growth rate were, respectively, 11,5 g . m-2. day-1 , for Branca de Santa Catarina; 10,2 g . m-2 . day-1 for IAC-12-829; and 8.8 g . m-2 - day-1 for IAC-7-127- Iracema. Maximum root growth rate followed the same sequence with 6.9, 6.3, and 6.2 g m-2 . day-1, respectively. Accumulation of dry matter in the roots began only after the plants had approximately 270 g . m-2.A produção de raízes, o índice de colheita e o índice de área foliar de três cultivares de mandioca (Manihot esculenta Crantz): Branca de Santa Catarina, IAC-12-829 e IAC-7-127-Iracema, não foram significativamente afetados pelas densidades de plantio utilizadas (10.000, 16.666 e 25.000 plantas/ha). O índice de colheita tendeu assintoticamente ao valor 0,67. As cultivares com maior peso de caules apresentaram menor peso de raízes. O índice de área foliar máximo foi igual a 4,0 para todas as cultivares. As cultivares IAC-12-829 e Branca de Santa Catarina apresentaram maior produção de raízes, sendo que a Branca de Santa Catarina teve maior peso total. A taxa máxima de crescimento da cultura foi de 11,5 g . m-2 , dia-1 para a Branca de Santa Catarina; 10,2 g . m-2 . dia-1 para a IAC-12-829; e 8,8 g . m2 . dia-1 para a IAC-7-127-Iracema. A taxa máxima de crescimento das raízes seguiu a mesma sequência com 6,9, 6,3 e 6,2 g . m-2 . dia-1, respectivamente. O acúmulo de matéria seca nas raízes se iniciou após as plantas pesarem aproximadamente 270 g . m-2.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraFahl, Joel IrineuMachado, Eduardo CarusoPereira, Antonio RobertoArruda, Hermano VazLorenzi, José Osmar2014-04-16info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/15667Pesquisa Agropecuaria Brasileira; v.17, n.3, mar. 1982; 399-405Pesquisa Agropecuária Brasileira; v.17, n.3, mar. 1982; 399-4051678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/15667/9683info:eu-repo/semantics/openAccess2014-04-16T12:34:35Zoai:ojs.seer.sct.embrapa.br:article/15667Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-04-16T12:34:35Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Physiological characteristics of three cassava cultivars Características fisiológicas de três cultivares de mandioca |
title |
Physiological characteristics of three cassava cultivars |
spellingShingle |
Physiological characteristics of three cassava cultivars Fahl, Joel Irineu growth analysis; physiological indexes; logistic function; harvest index; planting density; leaf area index análise de crescimento; índices fisiológicos; função logística; índice de colheita; densidade de plantio; índice de área foliar |
title_short |
Physiological characteristics of three cassava cultivars |
title_full |
Physiological characteristics of three cassava cultivars |
title_fullStr |
Physiological characteristics of three cassava cultivars |
title_full_unstemmed |
Physiological characteristics of three cassava cultivars |
title_sort |
Physiological characteristics of three cassava cultivars |
author |
Fahl, Joel Irineu |
author_facet |
Fahl, Joel Irineu Machado, Eduardo Caruso Pereira, Antonio Roberto Arruda, Hermano Vaz Lorenzi, José Osmar |
author_role |
author |
author2 |
Machado, Eduardo Caruso Pereira, Antonio Roberto Arruda, Hermano Vaz Lorenzi, José Osmar |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Fahl, Joel Irineu Machado, Eduardo Caruso Pereira, Antonio Roberto Arruda, Hermano Vaz Lorenzi, José Osmar |
dc.subject.por.fl_str_mv |
growth analysis; physiological indexes; logistic function; harvest index; planting density; leaf area index análise de crescimento; índices fisiológicos; função logística; índice de colheita; densidade de plantio; índice de área foliar |
topic |
growth analysis; physiological indexes; logistic function; harvest index; planting density; leaf area index análise de crescimento; índices fisiológicos; função logística; índice de colheita; densidade de plantio; índice de área foliar |
description |
Root production, harvest index, and leaf area index of three cassava cultivars (Manihot esculenta Crantz) Branca de Santa Catarina, IAC-12-829, and IAC-7-127- Iracema were not significantly affected by the planting densities (10,000, 16,666 and 25,000 plants/ha). The harvest index approached asymptotically the value 0.67. Cultivars with the heaviest stem had the lightest root. Maximum leaf area index achieved was 4.0 for all varieties. Cultivars IAC-12-829 and Branca de Santa Catarina had the highest root yield, while Branca de Santa Catarina had the highest plant weight. Maximum crop growth rate were, respectively, 11,5 g . m-2. day-1 , for Branca de Santa Catarina; 10,2 g . m-2 . day-1 for IAC-12-829; and 8.8 g . m-2 - day-1 for IAC-7-127- Iracema. Maximum root growth rate followed the same sequence with 6.9, 6.3, and 6.2 g m-2 . day-1, respectively. Accumulation of dry matter in the roots began only after the plants had approximately 270 g . m-2. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-04-16 |
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/15667 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/15667 |
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/15667/9683 |
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.17, n.3, mar. 1982; 399-405 Pesquisa Agropecuária Brasileira; v.17, n.3, mar. 1982; 399-405 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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1793416674355970048 |