Development of a new maize hybrid for the Ecuadorian lowland

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dc.creatorRicardo Limongi-Andrade
dc.creatorDaniel Alarcón-Cobeña
dc.creatorEddie Zambrano-Zambrano
dc.creatorMarlon Caicedo
dc.creatorPaúl Villavicencio-Linzan
dc.creatorJosé Eguez
dc.creatorBernardo Navarrete
dc.creatorCarlos Yanez
dc.creatorJosé L. Zambrano
dc.date2018
dc.date.accessioned2026-07-07T02:43:17Z
dc.descriptionYellow maize (Zea mays L. var. indurata) is mainly produced in the Ecuadorian lowlands (less than 1,200 m a.s.l.), primarily for feed production. Although Ecuador has recently increased maize production, new genotypes are needed for self-sufficiency and in order to avoid costly imports. Maize is sown mostly from December to January during the rainy season. However, the irregularity of rainfall has become a constraint on production. "INIAP H-603 Superior" is a new single-cross maize hybrid developed for the Ecuadorian lowlands with improved yields, which could contribute to domestic food security. The new hybrid had an average yield of 8.48 t ha-1 with outstanding performance under the rainfall, sustained moisture, and irrigation conditions, outperforming the commercial hybrids INIAP H-602, DEKALB-7088 and INIAP H-553. Additionally, the new hybrid showed tolerance to the principal foliar diseases: leaf blight (Exserohilum turcicum), rust (Puccinia sorghi), and leaf spot (Curvularia lunata), as well as good adaptability and stability, with a regression coefficient (bi) of 0.98 when it was evaluated in 29 locations from 2010 to 2013. The greatest yield potential of the new hybrid (10.82 t ha-1) was obtained with irrigation during the dry season.
dc.formatapplication/pdf
dc.identifier0120-9965
dc.identifierhttps://www.redalyc.org/articulo.oa?id=180358913010
dc.identifierhttps://www.redalyc.org/journal/1803/180358913010/
dc.identifierhttps://www.redalyc.org/journal/1803/180358913010/html/
dc.identifierhttps://www.redalyc.org/journal/1803/180358913010/180358913010.epub
dc.identifierhttps://www.redalyc.org/journal/1803/180358913010/movil
dc.identifier10.15446/agron.colomb.v36n2.68782
dc.identifier.urihttp://hdl.handle.net/123456789/421821
dc.languageen
dc.publisherUniversidad Nacional de Colombia
dc.relationhttp://www.redalyc.org/revista.oa?id=1803
dc.rightsAgronomía Colombiana
dc.sourceAgronomía Colombiana (Colombia) Num.2 Vol.36
dc.subjectAgrociencias
dc.titleDevelopment of a new maize hybrid for the Ecuadorian lowland
dc.typeartículo científico

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Agronomía Colombiana - Universidad Nacional de Colombia