Non-structural carbohydrate metabolism, growth, and productivity of maize by increasing plant density

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dc.contributor.authorCazetta, Jairo O. [UNESP]
dc.contributor.authorRevoredo, Marcos D. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2019-10-06T15:23:51Z
dc.date.available2019-10-06T15:23:51Z
dc.date.issued2018-11-02
dc.description.abstractIncreasing 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.en
dc.description.affiliationDepartment of Technology Unesp-São Paulo State University
dc.description.affiliationDepartment of Technology Soil Science Graduation Program Unesp-São Paulo State University
dc.description.affiliationUnespDepartment of Technology Unesp-São Paulo State University
dc.description.affiliationUnespDepartment of Technology Soil Science Graduation Program Unesp-São Paulo State University
dc.identifierhttp://dx.doi.org/10.3390/agronomy8110243
dc.identifier.citationAgronomy, v. 8, n. 11, 2018.
dc.identifier.doi10.3390/agronomy8110243
dc.identifier.issn2073-4395
dc.identifier.scopus2-s2.0-85056260225
dc.identifier.urihttp://hdl.handle.net/11449/187047
dc.language.isoeng
dc.relation.ispartofAgronomy
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectCarbohydrates
dc.subjectInvertase
dc.subjectL.
dc.subjectPlant density
dc.subjectProduction components
dc.subjectSucrose synthase
dc.subjectZea mayz
dc.titleNon-structural carbohydrate metabolism, growth, and productivity of maize by increasing plant densityen
dc.typeArtigo

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