Water stress influence on the vegetative period yield components of different maize genotypes

Araujo Rufino, Cassyo de ; Fernandes Vieira, Jucilayne ; Martín Gil, Jesús ; de Souza Abreu Junior, José ; Ciciliano Tavares, Lizandro ; Fernandes Correa, Marciabela ; Martín Ramos, Pablo (Universidad de Zaragoza)

Resumen: Maize is an important food staple in many countries, and is useful in animal feed and many industrial applications. Its productivity is highly sensitive to drought stress, which may occur at any period during its growth cycle. The objective of this work was to compare the water stress influence on the performance of different maize genotypes in critical vegetative stages. Four genotypes of maize (namely a single-cross hybrid (AG 9045), a double-cross hybrid (AG 9011), a triple-cross hybrid (AG 5011), and a variety (AL Bandeirante)) were subjected to a 10-day period without irrigation in the vegetative stages that determine the number of kernel rows and the plant’s ability to take up nutrients and water (V4, V6 and V8). The impact of low water availability was assessed by analyzing plant height, height of the first ear insertion, stem diameter, yield per plant, and number of rows per ear, evincing that the yield per plant was the most sensitive parameter in all the stages. With regard to the influence of the genotype, the single-cross hybrid was demonstrated to be the most resilient to water shortage.

Idioma: Inglés

DOI: 10.3390/agronomy8080151

Año: 2018

Publicado en: Agronomy 8, 8 (2018), 151 [9 pp.]
ISSN: 2073-4395

Factor impacto JCR: 2.259 (2018)

Categ. JCR: AGRONOMY rank: 19 / 89 = 0.213 (2018) - Q1 - T1
Categ. JCR: PLANT SCIENCES rank: 78 / 228 = 0.342 (2018) - Q2 - T2

Factor impacto SCIMAGO: 0.771 - Agronomy and Crop Science (Q1)

Tipo y forma: Article (Published version)

Área (Departamento): Area Ingeniería Agroforestal (Dpto. CC.Agrar.y Medio Natural)