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- 2021-12-01 (2)
- 2019-07-01 (1)
Yield and popping expansion components in local popcorn varieties from Southern Brazil
Componentes de rendimiento y capacidad de expansión de variedades locales de maíz pira en el sur de Brasil
DOI:
https://doi.org/10.15446/acag.v68n3.69127Palabras clave:
Agrobiodiversity, Genetic potential, Landrace, Phenotypic correlation, Pre-breeding, Zea mays L (en)Agrobiodiversidad, correlación fenotípica, potencial genético, premejoramiento, variedades criollas, Zea mays L (es)
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The aim of this study was to evaluate grain yield (GY), popping expansion (PE), popping expansion disregarding the weight of unpopped kernels (PEW), and eleven other agronomic and morphological traits of 14 local popcorn varieties (LPV) from far west of the state of Santa Catarina, Southern Brazil. Two experiments were carried out, in a completely randomized block design with three replications, in different regions of Santa Catarina: one in the municipality of Florianópolis (east coast) and the other in Anchieta (western). Grain yield had the highest positive correlation with prolificacy (PRL) (r = 0.72) and number of grains per row (NGR) (r = 0.71), and a negative correlation with caryopsis circularity index (CCI) (r = −0.67). Variable PEW showed a positive correlation with CCI (r = 0.70) and with thickness/width ratio (TWR) (r = 0.70). Variety 574A stood out for high PE and PRL. The improvement of composite populations and of populations per se is a potential breeding strategy for LPV, based on the complementarity and correlation among variables and the GY, PE, and PEW values, CCI – HEP – first ear height/plant height relation, PH – plant height; PRL – WHG – weight of 100 grains; VHG - volume of 100 grains; EL – ear length; NRE – number of rows per ear; NGR – number of grains per row of ear; ED – ear diameter.
En el presente trabajo se evaluaron la productividad de granos (GY), la capacidad de expansión (PE), la capacidad de expansión sin el peso de los granos no reventados (PEW), además de otras 11 características agronómicas y morfológicas de 14 variedades locales de maíz (Zea mays L.) ‘pira’ (LPV) provenientes del extremo oeste de Santa Catarina, en el sur de Brasil. Utilizando un delineamiento experimental de bloques completos al azar con tres repeticiones se realizaron dos experimentos, en dos regiones diferentes del estado de Santa Catarina; un primer ensayo en Florianopolis (litoral este) y un segundo ensayo en el municipio de Anchieta (extremo oeste). La mayor correlación positiva se observó entre productividad y prolificidad (PRL) (r = 0.72) seguida de la productividad vs. el número de granos por fila (NGR) (r = 0.71), mientras que con el índice de circularidad de la cariópside (CCI) la correlación fue negativa (r = -0.67). La variable (PEW) mostro correlación positiva con CCI (r = 0.70) y con la relación espesor/largo (TWR) (r = 0.70). La variedad de maíz pira 574A se destacó por sus altos valores de PE y PRL. El mejoramiento de poblaciones compuestas y de poblaciones per se es una estrategia de selección potencial para LPV, basada en la complementariedad y correlación entre las variables y los valores de GY, PE, PEW, TWR CCI – HEP – relación entre altura de la primera mazorca/altura de la planta; PH – altura de la planta; PRL – WHG – peso de 100 gramos; VHG - volumen de 100 gramos; EL – longitud de la mazorca; NRE – numero de filas por mazorca; NGR – ED – diámetro de la mazorca.
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1. Hércules dos Santos Pereira, Marcelo Vivas, Yure Pequeno de Souza, Rafael Nunes de Almeida, Geferson Rocha Santos, Gabriel Moreno Bernardo Gonçalves, Júlio Cesar Gradice Saluci, Rysley Fernades de Souza, Ana Lúcia Rangel de Souza. (2025). Impact of Fusarium sp. severity and agronomic traits on popcorn popping expansion. Agronomy Journal, 117(5) https://doi.org/10.1002/agj2.70187.
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