Relationship between the agronomic and anatomical characteristics of the leaf with a view to indirect selection in maize plants1

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dc.contributor.authordo Nascimento-Júnior, Ivanildo Ramalho [UNESP]
dc.contributor.authorMôro, Gustavo Vitti [UNESP]
dc.contributor.authorMôro, Fabíola Vitti [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2022-04-29T08:35:29Z
dc.date.available2022-04-29T08:35:29Z
dc.date.issued2021-01-01
dc.description.abstractIn crops such as maize, the leaf is directly related to dry-matter accumulation in the grain, and directly affects plant yield. The aim of this study was to verify the existence of a correlation between the agronomic and anatomical characteristics of the maize leaf, as well as to verify the effects of these characteristics on grain production using path analysis. The agronomic characteristics used in the analysis were plant height, height of ear insertion, relative position of the ear, lodging, plant breakage and grain yield. The following anatomical characteristics were evaluated: total leaf area, thickness of the bulliform cells, thickness of the adaxial and abaxial epidermis, thickness of the mesophyll, area of the xylem, phloem and sclerenchyma, and mean area of the vascular bundles. In analysing the genotypic correlation, associations were seen at 1% significance between mesophyll thickness and plant height, mesophyll thickness and height of ear insertion, and mesophyll thickness and plant breakage, indicating the possibility of indirect selection for these agronomic characteristics. From the path analysis, it was found that the agronomic characteristics of lodging and breakage, and the anatomical characteristics of thickness of the adaxial epidermis, area of the xylem and area of the sclerenchyma had the greatest direct effect on grain yield, indicating the additional possibility of indirect selection for yield during the earliest stages of the plant. These results can afford faster selection of superior genotypes within the various breeding programs of the species.en
dc.description.affiliationPrograma de Pós-Graduação em Agronomia (Genética e Melhoramento Vegetal) Departamento de Produção Vegetal Faculdade de Ciências Agrárias e Veterinárias Universidade Estadual Paulista/Unesp
dc.description.affiliationDepartamento de Produção Vegetal Faculdade de Ciências Agrárias e Veterinárias Universidade Estadual Paulista/Unesp
dc.description.affiliationDepartamento de Biologia Aplicada à Agricultura Faculdade de Ciências Agrárias e Veterinárias Universidade Estadual Paulista/Unesp
dc.description.affiliationUnespPrograma de Pós-Graduação em Agronomia (Genética e Melhoramento Vegetal) Departamento de Produção Vegetal Faculdade de Ciências Agrárias e Veterinárias Universidade Estadual Paulista/Unesp
dc.description.affiliationUnespDepartamento de Produção Vegetal Faculdade de Ciências Agrárias e Veterinárias Universidade Estadual Paulista/Unesp
dc.description.affiliationUnespDepartamento de Biologia Aplicada à Agricultura Faculdade de Ciências Agrárias e Veterinárias Universidade Estadual Paulista/Unesp
dc.format.extent21-28
dc.identifierhttp://dx.doi.org/10.5935/1806-6690.20210019
dc.identifier.citationRevista Ciencia Agronomica, v. 52, n. 3, p. 21-28, 2021.
dc.identifier.doi10.5935/1806-6690.20210019
dc.identifier.issn1806-6690
dc.identifier.issn0045-6888
dc.identifier.scopus2-s2.0-85117191830
dc.identifier.urihttp://hdl.handle.net/11449/229715
dc.language.isoeng
dc.language.isopor
dc.relation.ispartofRevista Ciencia Agronomica
dc.sourceScopus
dc.subjectCorrelation. Association. Plant breeding. Zea mays L
dc.subjectCorrelação. Associação. Melhoramento de plantas. Zea mays L
dc.titleRelationship between the agronomic and anatomical characteristics of the leaf with a view to indirect selection in maize plants1en
dc.titleRelação entre caracteres agronômicos e anatômicos da folha visando seleção indireta de plantas de milhopt
dc.typeArtigo
unesp.author.orcid0000-0002-9980-1574[1]
unesp.author.orcid0000-0001-7709-7814[2]
unesp.author.orcid0000-0001-7602-818X[3]
unesp.departmentBiologia - FCAVpt
unesp.departmentProdução Vegetal - FCAVpt

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Jaboticabal - FCAV - Faculdade de Ciências Agrárias e Veterinárias