GENETIC DIVERSITY OF LEAF AREA TRAITS IN MAIZE LANDRACES NATIVE TO TAMAULIPAS UNDER HIGH TEMPERATURES

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AudienciaPúblico en generales_ES
CoberturaMéxicoes_ES
Fecha de ingreso2026-10-05T16:33:14Z
Fecha de publicación2014-01-01
ResumenThe Mexican state of Tamaulipas has a wide variety of maize (Zea mays L.) landraces not well studied and with high potential for genetic improvement. The aim of the study was to determine genetic variability for traits related to leaf area and efficiency for grain production in maize landraces from Tamaulipas grown under high temperature conditions. Twenty four maize landraces, two commercial materials ('H-437' and `VS-536') and two improved advanced generations of hybrids were evaluated in two contrasting locations from Tamaulipas (Rio Bravo in the North and Guemez in the Central part). The first location had optimum temperature and soil moisture, while in the second location high temperatures were ensured through late planting. Nine agronomic traits, leaf area and grain production efficiency were registered. The analysis of variance showed the presence of wide genetic diversity among the landraces for all the studied traits. Out of the 24 maize landraces, 79 \% were superior for grain yield, ear leaf area, total leaf area and efficiency for grain production in relation to commercial breeding materials. These landraces might be potential donors of genes to enhance tolerance to high temperature. The genotype with the highest grain yield under high temperature conditions (>= 35 degrees C) was C-3004 (71.4 g/plant). The efficiency for grain production had a significant and negative association with leaf area index (-0.59{*}{*}), total leaf area (-0.59{*}{*}), ear leaf area (-0.43{*}) and total leaf number (-0.51{*}{*}), thus indicating the need of selection for physiological efficiency by choosing optimum leaf area index for high temperature conditions.es_ES
URIhttps://riuat.uat.edu.mx/handle/123456789/5078
Idiomaeses_ES
EditorialSOC MEXICANA FITOGENETICAes_ES
RelaciónRevista Fitotecnia Mexicanaes_ES
DerechosAcceso restringido / Suscripción (Metadatos de producción científica)es_ES
Licenciahttp://purl.org/coar/access_right/c_16eces_ES
FuenteRevista Fitotecnia Mexicana
Palabra claveZea mayses_ES
Palabra claveear leaf areaes_ES
Palabra clavegenetic variancees_ES
Palabra claveheritabilityes_ES
Palabra claveleaf numberes_ES
TítuloGENETIC DIVERSITY OF LEAF AREA TRAITS IN MAIZE LANDRACES NATIVE TO TAMAULIPAS UNDER HIGH TEMPERATURESes_ES
TipoArtículoes_ES
ArbitradoHa sido Arbitradoes_ES
AutorCastro-Nava, Sergio
AutorReyes-Mendez, Cesar A.
AutorHuerta, Alfredo J.
AutorCastro-Nava, Sergioes_ES
AutorReyes-Mendez, Cesar A.es_ES
AutorHuerta, Alfredo J.es_ES
InstituciónUniversidad Autónoma de Tamaulipas
InstituciónUniversidad Autónoma de Tamaulipases_ES
Número3es_ES
Rango de páginas217-223es_ES
Tipo de artículoIndexado
Tipo de artículoIndexadoes_ES
Volumen37es_ES

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