In vivo evaluation of vigor in naked and husked oat cultivars under drought stress conditions

ABSTRACT Considering the prevention of crop production, aimed at adaptation to climate changes, searching for or developing genotypes resistant to water deficit is a challenge for modern agriculture and a strategic goal of plant breeding. The objective of the study was to determine the effect of dro...

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Autores principales:	Zielinski,Andrzej, Mos,Maria, Wójtowicz,Tomasz
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2017
Materias:	Avena sativa drought stress husked oats naked oats seed vigor.
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392017000200110
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spelling	oai:scielo:S0718-583920170002001102017-11-09In vivo evaluation of vigor in naked and husked oat cultivars under drought stress conditionsZielinski,AndrzejMos,MariaWójtowicz,Tomasz Avena sativa drought stress husked oats naked oats seed vigor. ABSTRACT Considering the prevention of crop production, aimed at adaptation to climate changes, searching for or developing genotypes resistant to water deficit is a challenge for modern agriculture and a strategic goal of plant breeding. The objective of the study was to determine the effect of drought stress on the vigor of naked and husked oat (Avena sativa L.) cultivars. The studies concerned eight naked oat cultivars and two husked oat cultivars characterized by high germination capacity (above 95%). Seeds of naked oat cultivars showed susceptibility to varied thermal conditions during drought simulated by the use of polyethylene glycol (PEG) at a concentration of -1.5 MPa. An increase in temperature from 10 to 20 °C resulted in an average 37% increase in the number of normally germinating seeds, and in a more than 40% increase in germination rate, as well as in a 25% decrease in average germination time. A distinct increase in osmotic potential from -1 to -2 MPa during drought stress induction resulted in 15% decrease in vigor of husked cultivars measured by the percentage of normally developed seedlings. The vigor of oat cultivars, evaluated on the basis of electrical conductivity of exudates, was modified by genotypic variability. In naked cultivars, on average, 60% lower values were noted. The coefficients of correlation between electrical conductivity of exudates and germination capacity (r = -0.784) or frequency of normally developed seedlings (r = -0.919) confirm the highly significant interrelationship between the methods used for the evaluation of oat seeds under drought conditions.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.77 n.2 20172017-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392017000200110en10.4067/S0718-58392017000200110
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Avena sativa drought stress husked oats naked oats seed vigor.
spellingShingle	Avena sativa drought stress husked oats naked oats seed vigor. Zielinski,Andrzej Mos,Maria Wójtowicz,Tomasz In vivo evaluation of vigor in naked and husked oat cultivars under drought stress conditions
description	ABSTRACT Considering the prevention of crop production, aimed at adaptation to climate changes, searching for or developing genotypes resistant to water deficit is a challenge for modern agriculture and a strategic goal of plant breeding. The objective of the study was to determine the effect of drought stress on the vigor of naked and husked oat (Avena sativa L.) cultivars. The studies concerned eight naked oat cultivars and two husked oat cultivars characterized by high germination capacity (above 95%). Seeds of naked oat cultivars showed susceptibility to varied thermal conditions during drought simulated by the use of polyethylene glycol (PEG) at a concentration of -1.5 MPa. An increase in temperature from 10 to 20 °C resulted in an average 37% increase in the number of normally germinating seeds, and in a more than 40% increase in germination rate, as well as in a 25% decrease in average germination time. A distinct increase in osmotic potential from -1 to -2 MPa during drought stress induction resulted in 15% decrease in vigor of husked cultivars measured by the percentage of normally developed seedlings. The vigor of oat cultivars, evaluated on the basis of electrical conductivity of exudates, was modified by genotypic variability. In naked cultivars, on average, 60% lower values were noted. The coefficients of correlation between electrical conductivity of exudates and germination capacity (r = -0.784) or frequency of normally developed seedlings (r = -0.919) confirm the highly significant interrelationship between the methods used for the evaluation of oat seeds under drought conditions.
author	Zielinski,Andrzej Mos,Maria Wójtowicz,Tomasz
author_facet	Zielinski,Andrzej Mos,Maria Wójtowicz,Tomasz
author_sort	Zielinski,Andrzej
title	In vivo evaluation of vigor in naked and husked oat cultivars under drought stress conditions
title_short	In vivo evaluation of vigor in naked and husked oat cultivars under drought stress conditions
title_full	In vivo evaluation of vigor in naked and husked oat cultivars under drought stress conditions
title_fullStr	In vivo evaluation of vigor in naked and husked oat cultivars under drought stress conditions
title_full_unstemmed	In vivo evaluation of vigor in naked and husked oat cultivars under drought stress conditions
title_sort	in vivo evaluation of vigor in naked and husked oat cultivars under drought stress conditions
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2017
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392017000200110
work_keys_str_mv	AT zielinskiandrzej invivoevaluationofvigorinnakedandhuskedoatcultivarsunderdroughtstressconditions AT mosmaria invivoevaluationofvigorinnakedandhuskedoatcultivarsunderdroughtstressconditions AT wojtowicztomasz invivoevaluationofvigorinnakedandhuskedoatcultivarsunderdroughtstressconditions
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In vivo evaluation of vigor in naked and husked oat cultivars under drought stress conditions

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