Phenotyping and selection of S1 segregant inbred maize lines tolerant to hydric stress

Corn is susceptible to drought; a solution strategy is to generate tolerant lines from a segregating population to obtain hybrids or synthetic varieties, so the objectives were to select high yield and short ASI lines based on the irrigation-drought system, to estimate heritability and correlation&a...

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Autores principales:	Rebolloza Hernández, Hermes, Cervantes Adame, Yessica Flor, Broa Rojas, Elizabeth, Bahena Delgado, Gregorio, Olvera Velona, Angeluz
Formato:	Online
Lenguaje:	spa
Publicado:	Universidad de Sonora 2020
Acceso en línea:	https://biotecnia.unison.mx/index.php/biotecnia/article/view/1130
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spelling	biotecnia-article-11302022-05-31T17:20:08Z Phenotyping and selection of S1 segregant inbred maize lines tolerant to hydric stress Fenotipeo y selección de líneas S1 segregantes de maíz tolerantes a estrés hídrico Rebolloza Hernández, Hermes Cervantes Adame, Yessica Flor Broa Rojas, Elizabeth Bahena Delgado, Gregorio Olvera Velona, Angeluz Characterization ASI grain yield Caracterización ASI rendimiento de grano. Corn is susceptible to drought; a solution strategy is to generate tolerant lines from a segregating population to obtain hybrids or synthetic varieties, so the objectives were to select high yield and short ASI lines based on the irrigation-drought system, to estimate heritability and correlation of quantitative traits. The crossing of the Ac7643 × B39 lines, derived in 193 S1 lines which,  together with witness and parents, were evaluated under the alpha-lattice design in a 14×14 arrangement with two repetitions in two locations in Morelos, Mexico. The variables were flowering male (MF) and female (FF), anthesis-silking interval (ASI), plant height (HP) and cob (HC), as well as grain yield (GY). We observed a 40 % reduction in GY under drought (0.75 t ha-1) with respect to the irrigation environment (1.26 t ha-1). The ASI was five and two days in drought and irrigation environments, respectively. The heritability for GY and ASI was 0.41. There are lines with transgressive inheritance for GY and ASI. The correlation of the GY with FF and ASI was -0.23 and -0.37 , respectively. The germplasm can generate a synthetic variety or drought tolerant hybrids. La sequía reduce el rendimiento de grano del maíz; se requiere obtener líneas tolerantes a sequía para formar híbridos o variedades sintéticas. Los objetivos fueron: 1) fenotipear la población segregante en ambientes contrastantes de humedad, 2) seleccionar líneas de rendimiento alto y ASI corto con base a sequía y riego; y 3) determinar la heredabilidad y correlación de caracteres. El germoplasma fueron 193 líneas S1, progenitores y testigo; estos se evaluaron bajo riego y sequía inducida bajo el diseño látice alfa con dos repeticiones en dos localidades del Estado de Morelos, México. Las variables fueron floración masculina (FM) y femenina (FF), intervalo antesis-emergencia de estigmas (ASI), altura de planta (AP) y mazorca (AM); y rendimiento de grano (RG). Se observó reducción del 40 % en RG bajo sequía (0.75 t ha-1) con respecto a riego (1.26 ton ha-1), el ASI fue de 5 y 2 d en sequía y en riego, respectivamente. La heredabilidad para RG y ASI fue de 0.41. Existen líneas con herencia transgresiva para RG y ASI. La correlación del RG con FF y ASI fue de -0.23y -0.37, respectivamente. Existe germoplasma para generar una variedad sintética tolerante a estrés hídrico o iniciar un programa de hibridación.     Universidad de Sonora 2020-09-10 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Original peer-reviewed articles Artículos originales evaluados por pares application/pdf text/xml https://biotecnia.unison.mx/index.php/biotecnia/article/view/1130 10.18633/biotecnia.v22i3.1130 Biotecnia; Vol. 22 No. 3 (2020): Septiembre-Diciembre; 20-28 Biotecnia; Vol. 22 Núm. 3 (2020): Septiembre-Diciembre; 20-28 1665-1456 1665-1456 spa https://biotecnia.unison.mx/index.php/biotecnia/article/view/1130/448 https://biotecnia.unison.mx/index.php/biotecnia/article/view/1130/503 Derechos de autor 2020 Biotecnia
institution	Biotecnia
collection	OJS
language	spa
format	Online
author	Rebolloza Hernández, Hermes Cervantes Adame, Yessica Flor Broa Rojas, Elizabeth Bahena Delgado, Gregorio Olvera Velona, Angeluz
spellingShingle	Rebolloza Hernández, Hermes Cervantes Adame, Yessica Flor Broa Rojas, Elizabeth Bahena Delgado, Gregorio Olvera Velona, Angeluz Phenotyping and selection of S1 segregant inbred maize lines tolerant to hydric stress
author_facet	Rebolloza Hernández, Hermes Cervantes Adame, Yessica Flor Broa Rojas, Elizabeth Bahena Delgado, Gregorio Olvera Velona, Angeluz
author_sort	Rebolloza Hernández, Hermes
title	Phenotyping and selection of S1 segregant inbred maize lines tolerant to hydric stress
title_short	Phenotyping and selection of S1 segregant inbred maize lines tolerant to hydric stress
title_full	Phenotyping and selection of S1 segregant inbred maize lines tolerant to hydric stress
title_fullStr	Phenotyping and selection of S1 segregant inbred maize lines tolerant to hydric stress
title_full_unstemmed	Phenotyping and selection of S1 segregant inbred maize lines tolerant to hydric stress
title_sort	phenotyping and selection of s1 segregant inbred maize lines tolerant to hydric stress
description	Corn is susceptible to drought; a solution strategy is to generate tolerant lines from a segregating population to obtain hybrids or synthetic varieties, so the objectives were to select high yield and short ASI lines based on the irrigation-drought system, to estimate heritability and correlation of quantitative traits. The crossing of the Ac7643 × B39 lines, derived in 193 S1 lines which,  together with witness and parents, were evaluated under the alpha-lattice design in a 14×14 arrangement with two repetitions in two locations in Morelos, Mexico. The variables were flowering male (MF) and female (FF), anthesis-silking interval (ASI), plant height (HP) and cob (HC), as well as grain yield (GY). We observed a 40 % reduction in GY under drought (0.75 t ha-1) with respect to the irrigation environment (1.26 t ha-1). The ASI was five and two days in drought and irrigation environments, respectively. The heritability for GY and ASI was 0.41. There are lines with transgressive inheritance for GY and ASI. The correlation of the GY with FF and ASI was -0.23 and -0.37 , respectively. The germplasm can generate a synthetic variety or drought tolerant hybrids.
publisher	Universidad de Sonora
publishDate	2020
url	https://biotecnia.unison.mx/index.php/biotecnia/article/view/1130
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Phenotyping and selection of S1 segregant inbred maize lines tolerant to hydric stress

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