Ecophysiological responses of dual-purpose wheat originating from different cutting management systems

Wheat is one of the most cultivated cereals worldwide. Some wheat genotypes may be used for dual purposes that is, in the production of animal fodder and grains. The objective of this study was to compare the growth, partitioning of assimilates, and seed vigor expression of dual-purpose wheat cultiv...

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Main Authors: Felipe Koch, Ivan Ricardo Carvalho, Vinícius Jardel Szareski, Gustavo Henrique Demari, Manoela Andrade Monteiro, João Roberto Pimentel, Maicon Nardino, Tiago Pedó, Velci Queiróz de Souza, Tiago Zanatta Aumonde
Format: Article
Language:English
Published: Universidade Estadual de Londrina 2017-06-01
Series:Semina: Ciências Agrárias
Subjects:
Online Access:http://www.uel.br/revistas/uel/index.php/semagrarias/article/view/25787
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spelling doaj-f08520d801b044689c53c3fb7893775a2020-11-25T00:17:40ZengUniversidade Estadual de LondrinaSemina: Ciências Agrárias1676-546X1679-03592017-06-013831641165010.5433/1679-0359.2017v38n3p164115349Ecophysiological responses of dual-purpose wheat originating from different cutting management systemsFelipe Koch0Ivan Ricardo Carvalho1Vinícius Jardel Szareski2Gustavo Henrique Demari3Manoela Andrade Monteiro4João Roberto Pimentel5Maicon Nardino6Tiago Pedó7Velci Queiróz de Souza8Tiago Zanatta Aumonde9Universidade Federal de pelotasUniversidade Federal de PelotasUniversidade Federal de PelotasUniversidade Federal de PelotasUniversidade Federal de PelotasUniversidade Federal de PelotasUniversidade Federal de Santa MariaUniversidade Federal de PelotasUniversidade Federal do PampaUniversidade Federal de PelotasWheat is one of the most cultivated cereals worldwide. Some wheat genotypes may be used for dual purposes that is, in the production of animal fodder and grains. The objective of this study was to compare the growth, partitioning of assimilates, and seed vigor expression of dual-purpose wheat cultivars originating from seeds produced by plants subjected to different cutting management systems. Dual-purpose wheat seeds in the vegetative period were used for this study; these were obtained from the cultivar BRS Umbu produced by plants subjected to different cutting management systems. The experimental design was completely randomized in a factorial scheme, with four replications. The treatments comprised a combination of four seed production systems (one, two, and three cuts) and eight planting seasons (10, 20, 30, 40, 50, 60, 70, and 80 days after emergence [DAE]). Total dry-mass, dry-mass production rate, relative growth rate, net assimilation rate, leaf area index, solar energy conversion efficiency, dry-mass partitioning, seedling emergence in the field, and emergence speed index were evaluated. Data regarding seedling emergence and emergence speed index were adjusted by orthogonal polynomials. Primary growth data were evaluated from the simple logistic equation. From 60 DAE, an inversion of the values of total dry-mass was observed, and the maximum values were observed in plants from seeds produced without cutting management. The highest dry-mass production rates were noted for plants produced by seeds of plants not subjected to cutting management. The highest relative growth rates were noted among plants originating from seeds produced by plants subjected to three- and two-cut treatments. The net assimilation rate was higher in plants originating from seeds produced from plants subjected to cutting management systems. The highest values of emergence were observed for seeds obtained from the three-cut treatment. Similarly, an increase in the values of emergence speed index was observed in seeds from plants subjected to one-cut treatment. Dual-purpose wheat cultivars originating from seeds produced in the absence of cutting management presented higher total dry-mass, dry-mass production rate, and relative growth rate. The net assimilation rate was higher in plants from seeds produced with cutting management systems. Plants produced from seeds subjected to the three-cut production management resulted in more vigorous seeds.http://www.uel.br/revistas/uel/index.php/semagrarias/article/view/25787Análise de crescimentoTaxa assimilatória líquidaTriticum aestivum (L.)Vigor de sementes.
collection DOAJ
language English
format Article
sources DOAJ
author Felipe Koch
Ivan Ricardo Carvalho
Vinícius Jardel Szareski
Gustavo Henrique Demari
Manoela Andrade Monteiro
João Roberto Pimentel
Maicon Nardino
Tiago Pedó
Velci Queiróz de Souza
Tiago Zanatta Aumonde
spellingShingle Felipe Koch
Ivan Ricardo Carvalho
Vinícius Jardel Szareski
Gustavo Henrique Demari
Manoela Andrade Monteiro
João Roberto Pimentel
Maicon Nardino
Tiago Pedó
Velci Queiróz de Souza
Tiago Zanatta Aumonde
Ecophysiological responses of dual-purpose wheat originating from different cutting management systems
Semina: Ciências Agrárias
Análise de crescimento
Taxa assimilatória líquida
Triticum aestivum (L.)
Vigor de sementes.
author_facet Felipe Koch
Ivan Ricardo Carvalho
Vinícius Jardel Szareski
Gustavo Henrique Demari
Manoela Andrade Monteiro
João Roberto Pimentel
Maicon Nardino
Tiago Pedó
Velci Queiróz de Souza
Tiago Zanatta Aumonde
author_sort Felipe Koch
title Ecophysiological responses of dual-purpose wheat originating from different cutting management systems
title_short Ecophysiological responses of dual-purpose wheat originating from different cutting management systems
title_full Ecophysiological responses of dual-purpose wheat originating from different cutting management systems
title_fullStr Ecophysiological responses of dual-purpose wheat originating from different cutting management systems
title_full_unstemmed Ecophysiological responses of dual-purpose wheat originating from different cutting management systems
title_sort ecophysiological responses of dual-purpose wheat originating from different cutting management systems
publisher Universidade Estadual de Londrina
series Semina: Ciências Agrárias
issn 1676-546X
1679-0359
publishDate 2017-06-01
description Wheat is one of the most cultivated cereals worldwide. Some wheat genotypes may be used for dual purposes that is, in the production of animal fodder and grains. The objective of this study was to compare the growth, partitioning of assimilates, and seed vigor expression of dual-purpose wheat cultivars originating from seeds produced by plants subjected to different cutting management systems. Dual-purpose wheat seeds in the vegetative period were used for this study; these were obtained from the cultivar BRS Umbu produced by plants subjected to different cutting management systems. The experimental design was completely randomized in a factorial scheme, with four replications. The treatments comprised a combination of four seed production systems (one, two, and three cuts) and eight planting seasons (10, 20, 30, 40, 50, 60, 70, and 80 days after emergence [DAE]). Total dry-mass, dry-mass production rate, relative growth rate, net assimilation rate, leaf area index, solar energy conversion efficiency, dry-mass partitioning, seedling emergence in the field, and emergence speed index were evaluated. Data regarding seedling emergence and emergence speed index were adjusted by orthogonal polynomials. Primary growth data were evaluated from the simple logistic equation. From 60 DAE, an inversion of the values of total dry-mass was observed, and the maximum values were observed in plants from seeds produced without cutting management. The highest dry-mass production rates were noted for plants produced by seeds of plants not subjected to cutting management. The highest relative growth rates were noted among plants originating from seeds produced by plants subjected to three- and two-cut treatments. The net assimilation rate was higher in plants originating from seeds produced from plants subjected to cutting management systems. The highest values of emergence were observed for seeds obtained from the three-cut treatment. Similarly, an increase in the values of emergence speed index was observed in seeds from plants subjected to one-cut treatment. Dual-purpose wheat cultivars originating from seeds produced in the absence of cutting management presented higher total dry-mass, dry-mass production rate, and relative growth rate. The net assimilation rate was higher in plants from seeds produced with cutting management systems. Plants produced from seeds subjected to the three-cut production management resulted in more vigorous seeds.
topic Análise de crescimento
Taxa assimilatória líquida
Triticum aestivum (L.)
Vigor de sementes.
url http://www.uel.br/revistas/uel/index.php/semagrarias/article/view/25787
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