Non-structural carbohydrate metabolism, growth, and productivity of maize by increasing plant density
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.3390/agronomy8110243 http://hdl.handle.net/11449/187047 |
Resumo: | Increasing plant density seems to improve the productivity of maize crops, and the understanding of how the metabolism of non-structural carbohydrates is affected in plants under high crop density is critical. Thus, with the objective of further clarifying this issue, maize plants were subjected to densities from 30,000 to 90,000 plants ha-1, and the plant growth, soluble sugars and starch contents, invertase and sucrose synthase activities, and plant production were evaluated. We found that the stalk is more sensitive to the increasing plant density than leaves and kernels. The dry weight of the stalk and leaves per single plant decreased more drastically from low to intermediate plant densities, while grain production was reduced linearly in all plant density ranges, leading to higher values of harvest index in intermediate plant densities. The sucrose concentration did not change in leaves, stalk, or kernels of plants subjected to increasing plant densities at the R4 stage. Also, the specific activity of soluble invertase, bound invertase, and sucrose synthase did not change in leaf, stalk, or kernels of plants subjected to increased plant density. The productivity was increased with the increase in plant density, using narrow row (0.45 m) spacing. |
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Non-structural carbohydrate metabolism, growth, and productivity of maize by increasing plant densityCarbohydratesInvertaseL.Plant densityProduction componentsSucrose synthaseZea mayzIncreasing plant density seems to improve the productivity of maize crops, and the understanding of how the metabolism of non-structural carbohydrates is affected in plants under high crop density is critical. Thus, with the objective of further clarifying this issue, maize plants were subjected to densities from 30,000 to 90,000 plants ha-1, and the plant growth, soluble sugars and starch contents, invertase and sucrose synthase activities, and plant production were evaluated. We found that the stalk is more sensitive to the increasing plant density than leaves and kernels. The dry weight of the stalk and leaves per single plant decreased more drastically from low to intermediate plant densities, while grain production was reduced linearly in all plant density ranges, leading to higher values of harvest index in intermediate plant densities. The sucrose concentration did not change in leaves, stalk, or kernels of plants subjected to increasing plant densities at the R4 stage. Also, the specific activity of soluble invertase, bound invertase, and sucrose synthase did not change in leaf, stalk, or kernels of plants subjected to increased plant density. The productivity was increased with the increase in plant density, using narrow row (0.45 m) spacing.Department of Technology Unesp-São Paulo State UniversityDepartment of Technology Soil Science Graduation Program Unesp-São Paulo State UniversityDepartment of Technology Unesp-São Paulo State UniversityDepartment of Technology Soil Science Graduation Program Unesp-São Paulo State UniversityUniversidade Estadual Paulista (Unesp)Cazetta, Jairo O. [UNESP]Revoredo, Marcos D. [UNESP]2019-10-06T15:23:51Z2019-10-06T15:23:51Z2018-11-02info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.3390/agronomy8110243Agronomy, v. 8, n. 11, 2018.2073-4395http://hdl.handle.net/11449/18704710.3390/agronomy81102432-s2.0-85056260225Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengAgronomyinfo:eu-repo/semantics/openAccess2021-10-22T19:32:21Zoai:repositorio.unesp.br:11449/187047Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-22T19:32:21Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Non-structural carbohydrate metabolism, growth, and productivity of maize by increasing plant density |
title |
Non-structural carbohydrate metabolism, growth, and productivity of maize by increasing plant density |
spellingShingle |
Non-structural carbohydrate metabolism, growth, and productivity of maize by increasing plant density Cazetta, Jairo O. [UNESP] Carbohydrates Invertase L. Plant density Production components Sucrose synthase Zea mayz |
title_short |
Non-structural carbohydrate metabolism, growth, and productivity of maize by increasing plant density |
title_full |
Non-structural carbohydrate metabolism, growth, and productivity of maize by increasing plant density |
title_fullStr |
Non-structural carbohydrate metabolism, growth, and productivity of maize by increasing plant density |
title_full_unstemmed |
Non-structural carbohydrate metabolism, growth, and productivity of maize by increasing plant density |
title_sort |
Non-structural carbohydrate metabolism, growth, and productivity of maize by increasing plant density |
author |
Cazetta, Jairo O. [UNESP] |
author_facet |
Cazetta, Jairo O. [UNESP] Revoredo, Marcos D. [UNESP] |
author_role |
author |
author2 |
Revoredo, Marcos D. [UNESP] |
author2_role |
author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Cazetta, Jairo O. [UNESP] Revoredo, Marcos D. [UNESP] |
dc.subject.por.fl_str_mv |
Carbohydrates Invertase L. Plant density Production components Sucrose synthase Zea mayz |
topic |
Carbohydrates Invertase L. Plant density Production components Sucrose synthase Zea mayz |
description |
Increasing plant density seems to improve the productivity of maize crops, and the understanding of how the metabolism of non-structural carbohydrates is affected in plants under high crop density is critical. Thus, with the objective of further clarifying this issue, maize plants were subjected to densities from 30,000 to 90,000 plants ha-1, and the plant growth, soluble sugars and starch contents, invertase and sucrose synthase activities, and plant production were evaluated. We found that the stalk is more sensitive to the increasing plant density than leaves and kernels. The dry weight of the stalk and leaves per single plant decreased more drastically from low to intermediate plant densities, while grain production was reduced linearly in all plant density ranges, leading to higher values of harvest index in intermediate plant densities. The sucrose concentration did not change in leaves, stalk, or kernels of plants subjected to increasing plant densities at the R4 stage. Also, the specific activity of soluble invertase, bound invertase, and sucrose synthase did not change in leaf, stalk, or kernels of plants subjected to increased plant density. The productivity was increased with the increase in plant density, using narrow row (0.45 m) spacing. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-11-02 2019-10-06T15:23:51Z 2019-10-06T15:23:51Z |
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/10.3390/agronomy8110243 Agronomy, v. 8, n. 11, 2018. 2073-4395 http://hdl.handle.net/11449/187047 10.3390/agronomy8110243 2-s2.0-85056260225 |
url |
http://dx.doi.org/10.3390/agronomy8110243 http://hdl.handle.net/11449/187047 |
identifier_str_mv |
Agronomy, v. 8, n. 11, 2018. 2073-4395 10.3390/agronomy8110243 2-s2.0-85056260225 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Agronomy |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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_ |
1803047049680125952 |