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Adaptability and yield stability of cowpea elite lines of semi-prostrate growth habit in the cerrado biome Rev. Ciênc. Agron.
Sousa,Massaine Bandeira e; Damasceno-Silva,Kaesel Jackson; Rocha,Maurisrael de Moura; Menezes Júnior,José Ângelo Nogueira de; Lima,Laíze Raphaelle Lemos.
ABSTRACT The effects of the genotype × environment interaction can be reduced by using cultivars with high adaptability and good yield stability. Studies on this subject allow identification of genotypes of predictable behavior, and responsive to environmental variations in specific and general conditions, in favorable or unfavorable environments. The objective of this work was to evaluate the adaptability and phenotypic stability of cowpea elite lines of semi-prostrate growth habit in the Cerrado biome in Brazil. Twenty cowpea genotypes of semi-prostrate growth habit were evaluated in nine VCU (value for cultivation and use) tests from 2010 to 2012. Grain yield data were subjected to analysis of variance, and stability and adaptability analyses were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Vigna unguiculata; Genotype × Environment Interaction; Grain yield.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902017000500832
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Yield components and reproductive, physiological, and root traits used in early selection for nitrogen use efficiency in corn PAB
Morais,Pedro Patric Pinho; Sousa,Massaine Bandeira e; Galli,Giovanni; Andrade,Luciano Rogério Braatz e; Fritsche-Neto,Roberto; Oliveira,Aluízio Borém de.
Abstract: The objective of this work was to examine the possibility of using yield components and reproductive, physiological, and root traits in early selection for nitrogen use efficiency (NUE) in corn. Sixty-four inbred lines were evaluated under two nitrogen fertilization levels: ideal and low. The evaluations were performed at three phenological stages: eight fully-expanded leaves, tasseling stage, and physiological maturity. It is possible to select superior lines for NUE, but the yield components did not show differential behavior under the different nitrogen levels evaluated. Root, reproductive, and physiological traits are not promising for early selection of corn lines with high NUE. Likewise, the eight-leaves and tasseling stages were not...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Zea mays; Abiotic stress; GBlup; Indirect selection; Path analysis; Selection index.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000500620
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