Screening of sunflower (Helianthus annus L.) accessions under drought stress conditions, an experimental assay

Drought is the major abiotic stress that limits the crop production at drastic level. Screening of tolerant accessions from available germplasm is the basic step in plant breeding. Sunflower is becoming popular and major oilseed crop in world but unfortunately it is drought sensitive. Screening in f...

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Autores principales:	Razzaq,Humera, Nadeem Tahir,M. Hammad, Ahmad Sadaqat,Hafeez, Sadia,Bushra
Lenguaje:	English
Publicado:	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo 2017
Materias:	Drought stress polyethylene glycol (PEG-6000) principal component analysis seedling traits sunflower accessions
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162017000300009
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spelling	oai:scielo:S0718-951620170003000092017-10-13Screening of sunflower (Helianthus annus L.) accessions under drought stress conditions, an experimental assayRazzaq,HumeraNadeem Tahir,M. HammadAhmad Sadaqat,HafeezSadia,Bushra Drought stress polyethylene glycol (PEG-6000) principal component analysis seedling traits sunflower accessions Drought is the major abiotic stress that limits the crop production at drastic level. Screening of tolerant accessions from available germplasm is the basic step in plant breeding. Sunflower is becoming popular and major oilseed crop in world but unfortunately it is drought sensitive. Screening in field has uncertainties due to the uncontrolled conditions, interaction of biotic and abiotic stresses and variability in environmental factors. Response of the sixty sunflower accessions to drought stress at germination and seedling stage was examined by using polyethylene glycol (PEG-6000) as drought simulator under laboratory. Normal and drought stress treatments i.e. T1= zero (control), T2= -1.33 MPa and T3= -1.62 MPa were developed by dissolving 0, 15g and 20g Polyethylene Glycol (PEG-6000) in 100 mL distilled water and a completely randomized design with three replications were used. Promptness, germination, seedling height, fresh weight, dry weight and stress indexes were determined to evaluate the response of sunflower accessions under normal and PEG simulated drought stress treatments. Principal component analysis was used to select the drought tolerant and sensitive accessions. The accessions 017583, A-75, A-79, 017592, G-33, A-48, A-23, G-61, HBRS-1 and 017566 were selected as drought tolerant while, CM-621, 017577, HA-124, HA-133, HA-342 and HA-341 were as drought sensitive. This study may be helpful for the comparison of drought indexes in a controlled experimental assay and for the identification of drought tolerant sunflower cultivars to be used in further breeding programs.info:eu-repo/semantics/openAccessChilean Society of Soil Science / Sociedad Chilena de la Ciencia del SueloJournal of soil science and plant nutrition v.17 n.3 20172017-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162017000300009en10.4067/S0718-95162017000300009
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Drought stress polyethylene glycol (PEG-6000) principal component analysis seedling traits sunflower accessions
spellingShingle	Drought stress polyethylene glycol (PEG-6000) principal component analysis seedling traits sunflower accessions Razzaq,Humera Nadeem Tahir,M. Hammad Ahmad Sadaqat,Hafeez Sadia,Bushra Screening of sunflower (Helianthus annus L.) accessions under drought stress conditions, an experimental assay
description	Drought is the major abiotic stress that limits the crop production at drastic level. Screening of tolerant accessions from available germplasm is the basic step in plant breeding. Sunflower is becoming popular and major oilseed crop in world but unfortunately it is drought sensitive. Screening in field has uncertainties due to the uncontrolled conditions, interaction of biotic and abiotic stresses and variability in environmental factors. Response of the sixty sunflower accessions to drought stress at germination and seedling stage was examined by using polyethylene glycol (PEG-6000) as drought simulator under laboratory. Normal and drought stress treatments i.e. T1= zero (control), T2= -1.33 MPa and T3= -1.62 MPa were developed by dissolving 0, 15g and 20g Polyethylene Glycol (PEG-6000) in 100 mL distilled water and a completely randomized design with three replications were used. Promptness, germination, seedling height, fresh weight, dry weight and stress indexes were determined to evaluate the response of sunflower accessions under normal and PEG simulated drought stress treatments. Principal component analysis was used to select the drought tolerant and sensitive accessions. The accessions 017583, A-75, A-79, 017592, G-33, A-48, A-23, G-61, HBRS-1 and 017566 were selected as drought tolerant while, CM-621, 017577, HA-124, HA-133, HA-342 and HA-341 were as drought sensitive. This study may be helpful for the comparison of drought indexes in a controlled experimental assay and for the identification of drought tolerant sunflower cultivars to be used in further breeding programs.
author	Razzaq,Humera Nadeem Tahir,M. Hammad Ahmad Sadaqat,Hafeez Sadia,Bushra
author_facet	Razzaq,Humera Nadeem Tahir,M. Hammad Ahmad Sadaqat,Hafeez Sadia,Bushra
author_sort	Razzaq,Humera
title	Screening of sunflower (Helianthus annus L.) accessions under drought stress conditions, an experimental assay
title_short	Screening of sunflower (Helianthus annus L.) accessions under drought stress conditions, an experimental assay
title_full	Screening of sunflower (Helianthus annus L.) accessions under drought stress conditions, an experimental assay
title_fullStr	Screening of sunflower (Helianthus annus L.) accessions under drought stress conditions, an experimental assay
title_full_unstemmed	Screening of sunflower (Helianthus annus L.) accessions under drought stress conditions, an experimental assay
title_sort	screening of sunflower (helianthus annus l.) accessions under drought stress conditions, an experimental assay
publisher	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
publishDate	2017
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162017000300009
work_keys_str_mv	AT razzaqhumera screeningofsunflowerhelianthusannuslaccessionsunderdroughtstressconditionsanexperimentalassay AT nadeemtahirmhammad screeningofsunflowerhelianthusannuslaccessionsunderdroughtstressconditionsanexperimentalassay AT ahmadsadaqathafeez screeningofsunflowerhelianthusannuslaccessionsunderdroughtstressconditionsanexperimentalassay AT sadiabushra screeningofsunflowerhelianthusannuslaccessionsunderdroughtstressconditionsanexperimentalassay
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Screening of sunflower (Helianthus annus L.) accessions under drought stress conditions, an experimental assay

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