Morpho-anatomical characteristics conferring drought tolerance in roots of sugar cane genotypes (Saccharum L., Poaceae)
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1007/s40415-015-0191-5 http://hdl.handle.net/11449/172265 |
Resumo: | Sugar cane is a major product of Brazilian agriculture, providing about R$ 56 billion of exports per year. Morphological and anatomical analyses enable the identification of plants, whose genotype is still unknown, and increase our knowledge of organs adaptations, such as roots, to different environment conditions. This study aimed to describe the morpho-anatomy of roots of six sugar cane genotypes. Plants were obtained by insertion of stalks in 3L containers filled with coconut fiber substrate. They were held for 7 days in a germination chamber (BOD MA 403) under a 16-h photoperiod with a light intensity of 38 μmol m−2 s−1 and a constant temperature of 35 °C. Daily irrigation was performed, keeping the substrate close to saturation. After this period, plants were transferred to a greenhouse and grew under approximately 116 μmol m−2 s−1 of light intensity at 30 °C and 80 % relative humidity, during 45 days of daily irrigation. For anatomical characterization, 20 roots from stalks and tillers of five plants per genotype were fixed in FAA 50 % and preserved in alcohol 70 %. For each root, the median region was selected for freehand-sectioning, using a razor blade. The results confirmed that anatomical features might be useful for cultivar identification. RB867515 cultivar showed roots with anatomical features that provide drought resistance, including a reduced number of cortical layers. The roots of SP801816 cultivar had more cortical layers and protoxylem poles in stalks and tillers, indicating a reduced drought resistance. |
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Morpho-anatomical characteristics conferring drought tolerance in roots of sugar cane genotypes (Saccharum L., Poaceae)CortexExodermisProtoxylem polesRoot anatomySugar cane is a major product of Brazilian agriculture, providing about R$ 56 billion of exports per year. Morphological and anatomical analyses enable the identification of plants, whose genotype is still unknown, and increase our knowledge of organs adaptations, such as roots, to different environment conditions. This study aimed to describe the morpho-anatomy of roots of six sugar cane genotypes. Plants were obtained by insertion of stalks in 3L containers filled with coconut fiber substrate. They were held for 7 days in a germination chamber (BOD MA 403) under a 16-h photoperiod with a light intensity of 38 μmol m−2 s−1 and a constant temperature of 35 °C. Daily irrigation was performed, keeping the substrate close to saturation. After this period, plants were transferred to a greenhouse and grew under approximately 116 μmol m−2 s−1 of light intensity at 30 °C and 80 % relative humidity, during 45 days of daily irrigation. For anatomical characterization, 20 roots from stalks and tillers of five plants per genotype were fixed in FAA 50 % and preserved in alcohol 70 %. For each root, the median region was selected for freehand-sectioning, using a razor blade. The results confirmed that anatomical features might be useful for cultivar identification. RB867515 cultivar showed roots with anatomical features that provide drought resistance, including a reduced number of cortical layers. The roots of SP801816 cultivar had more cortical layers and protoxylem poles in stalks and tillers, indicating a reduced drought resistance.Monsanto - Brazil, Estrada Municipal CHL 362, Km1. Fazenda Santa FéUniversidade Federal de São Carlos (UFSCar), Campus Araras, Rodovia Anhanguera, Km 174Dow AgroSciences Brasil, Rodovia SP 147, Km 71.5 - Vila PrimaveraDepartamento de Botânica Instituto de Biociência - Universidade do Estado de São Paulo (UNESP) Rio Claro, Caixa Postal 199Centro Universitário Hermínio Ometto (UNIARARAS), Av. Dr. Maximiliano Baruto, 500 - Jardim UniversitárioDepartamento de Botânica Instituto de Biociência - Universidade do Estado de São Paulo (UNESP) Rio Claro, Caixa Postal 199Monsanto - BrazilUniversidade Federal de São Carlos (UFSCar)Dow AgroSciences BrasilUniversidade Estadual Paulista (Unesp)Centro Universitário Hermínio Ometto (UNIARARAS)da Cruz Maciel, Jean Rafaelde Oliveira, DanielleFadin, Dauri Aparecidodas Graças Sajo, Maria [UNESP]Pedroso-de-Moraes, Cristiano2018-12-11T16:59:26Z2018-12-11T16:59:26Z2015-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article951-960application/pdfhttp://dx.doi.org/10.1007/s40415-015-0191-5Revista Brasileira de Botanica, v. 38, n. 4, p. 951-960, 2015.1806-99590100-8404http://hdl.handle.net/11449/17226510.1007/s40415-015-0191-52-s2.0-849492230172-s2.0-84949223017.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengRevista Brasileira de Botanica0,269info:eu-repo/semantics/openAccess2024-01-15T06:25:54Zoai:repositorio.unesp.br:11449/172265Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T23:05:26.479830Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Morpho-anatomical characteristics conferring drought tolerance in roots of sugar cane genotypes (Saccharum L., Poaceae) |
title |
Morpho-anatomical characteristics conferring drought tolerance in roots of sugar cane genotypes (Saccharum L., Poaceae) |
spellingShingle |
Morpho-anatomical characteristics conferring drought tolerance in roots of sugar cane genotypes (Saccharum L., Poaceae) da Cruz Maciel, Jean Rafael Cortex Exodermis Protoxylem poles Root anatomy |
title_short |
Morpho-anatomical characteristics conferring drought tolerance in roots of sugar cane genotypes (Saccharum L., Poaceae) |
title_full |
Morpho-anatomical characteristics conferring drought tolerance in roots of sugar cane genotypes (Saccharum L., Poaceae) |
title_fullStr |
Morpho-anatomical characteristics conferring drought tolerance in roots of sugar cane genotypes (Saccharum L., Poaceae) |
title_full_unstemmed |
Morpho-anatomical characteristics conferring drought tolerance in roots of sugar cane genotypes (Saccharum L., Poaceae) |
title_sort |
Morpho-anatomical characteristics conferring drought tolerance in roots of sugar cane genotypes (Saccharum L., Poaceae) |
author |
da Cruz Maciel, Jean Rafael |
author_facet |
da Cruz Maciel, Jean Rafael de Oliveira, Danielle Fadin, Dauri Aparecido das Graças Sajo, Maria [UNESP] Pedroso-de-Moraes, Cristiano |
author_role |
author |
author2 |
de Oliveira, Danielle Fadin, Dauri Aparecido das Graças Sajo, Maria [UNESP] Pedroso-de-Moraes, Cristiano |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Monsanto - Brazil Universidade Federal de São Carlos (UFSCar) Dow AgroSciences Brasil Universidade Estadual Paulista (Unesp) Centro Universitário Hermínio Ometto (UNIARARAS) |
dc.contributor.author.fl_str_mv |
da Cruz Maciel, Jean Rafael de Oliveira, Danielle Fadin, Dauri Aparecido das Graças Sajo, Maria [UNESP] Pedroso-de-Moraes, Cristiano |
dc.subject.por.fl_str_mv |
Cortex Exodermis Protoxylem poles Root anatomy |
topic |
Cortex Exodermis Protoxylem poles Root anatomy |
description |
Sugar cane is a major product of Brazilian agriculture, providing about R$ 56 billion of exports per year. Morphological and anatomical analyses enable the identification of plants, whose genotype is still unknown, and increase our knowledge of organs adaptations, such as roots, to different environment conditions. This study aimed to describe the morpho-anatomy of roots of six sugar cane genotypes. Plants were obtained by insertion of stalks in 3L containers filled with coconut fiber substrate. They were held for 7 days in a germination chamber (BOD MA 403) under a 16-h photoperiod with a light intensity of 38 μmol m−2 s−1 and a constant temperature of 35 °C. Daily irrigation was performed, keeping the substrate close to saturation. After this period, plants were transferred to a greenhouse and grew under approximately 116 μmol m−2 s−1 of light intensity at 30 °C and 80 % relative humidity, during 45 days of daily irrigation. For anatomical characterization, 20 roots from stalks and tillers of five plants per genotype were fixed in FAA 50 % and preserved in alcohol 70 %. For each root, the median region was selected for freehand-sectioning, using a razor blade. The results confirmed that anatomical features might be useful for cultivar identification. RB867515 cultivar showed roots with anatomical features that provide drought resistance, including a reduced number of cortical layers. The roots of SP801816 cultivar had more cortical layers and protoxylem poles in stalks and tillers, indicating a reduced drought resistance. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-12-01 2018-12-11T16:59:26Z 2018-12-11T16:59:26Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1007/s40415-015-0191-5 Revista Brasileira de Botanica, v. 38, n. 4, p. 951-960, 2015. 1806-9959 0100-8404 http://hdl.handle.net/11449/172265 10.1007/s40415-015-0191-5 2-s2.0-84949223017 2-s2.0-84949223017.pdf |
url |
http://dx.doi.org/10.1007/s40415-015-0191-5 http://hdl.handle.net/11449/172265 |
identifier_str_mv |
Revista Brasileira de Botanica, v. 38, n. 4, p. 951-960, 2015. 1806-9959 0100-8404 10.1007/s40415-015-0191-5 2-s2.0-84949223017 2-s2.0-84949223017.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Revista Brasileira de Botanica 0,269 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
951-960 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129488900325376 |