Methods to Break Seed Dormancy of Rhynchosia capitata, a Summer Annual Weed

Dormancy of weed seeds is a significant feature contributing to their survival rate since it helps the weeds to avoid herbicides and other weeding practices along with unfavorable environmental conditions. We investigated the effects of different dormancy breaking treatments on the germination of Rh...

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Autores principales:	Haider Ali,Hafiz, Tanveer,Asif, Ather Nadeem,Muhammad, Naeem Asghar,Hafiz
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2011
Materias:	HCl HNO3 H2SO4 dormancy germination
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000300021
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spelling	oai:scielo:S0718-583920110003000212018-10-01Methods to Break Seed Dormancy of Rhynchosia capitata, a Summer Annual WeedHaider Ali,HafizTanveer,AsifAther Nadeem,MuhammadNaeem Asghar,Hafiz HCl HNO3 H2SO4 dormancy germination Dormancy of weed seeds is a significant feature contributing to their survival rate since it helps the weeds to avoid herbicides and other weeding practices along with unfavorable environmental conditions. We investigated the effects of different dormancy breaking treatments on the germination of Rhynchosia capitata, a common summer annual weed, which is emerging as a weed threat in Pakistan. Seeds were soaked in thiourea, KNO3, HCl, HNO3, and H2SO4, and they were also mechanically scarified (sandpaper). Results indicated that R. capitata seeds show signs of physical dormancy that is mainly due to the impermeability of their coat. Mechanical scarification and acid scarification (soaking of seeds in H2SO4 for 60 and 80 min and in HCl for 12 and 15 h) were very efficient in breaking dormancy and promoting germination. Seed soaking in HNO3 for 1 to 5 d showed little effect whereas various concentrations of thiourea and KNO3 were ineffective in breaking R. capitata seed dormancy.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.71 n.3 20112011-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000300021en10.4067/S0718-58392011000300021
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	HCl HNO3 H2SO4 dormancy germination
spellingShingle	HCl HNO3 H2SO4 dormancy germination Haider Ali,Hafiz Tanveer,Asif Ather Nadeem,Muhammad Naeem Asghar,Hafiz Methods to Break Seed Dormancy of Rhynchosia capitata, a Summer Annual Weed
description	Dormancy of weed seeds is a significant feature contributing to their survival rate since it helps the weeds to avoid herbicides and other weeding practices along with unfavorable environmental conditions. We investigated the effects of different dormancy breaking treatments on the germination of Rhynchosia capitata, a common summer annual weed, which is emerging as a weed threat in Pakistan. Seeds were soaked in thiourea, KNO3, HCl, HNO3, and H2SO4, and they were also mechanically scarified (sandpaper). Results indicated that R. capitata seeds show signs of physical dormancy that is mainly due to the impermeability of their coat. Mechanical scarification and acid scarification (soaking of seeds in H2SO4 for 60 and 80 min and in HCl for 12 and 15 h) were very efficient in breaking dormancy and promoting germination. Seed soaking in HNO3 for 1 to 5 d showed little effect whereas various concentrations of thiourea and KNO3 were ineffective in breaking R. capitata seed dormancy.
author	Haider Ali,Hafiz Tanveer,Asif Ather Nadeem,Muhammad Naeem Asghar,Hafiz
author_facet	Haider Ali,Hafiz Tanveer,Asif Ather Nadeem,Muhammad Naeem Asghar,Hafiz
author_sort	Haider Ali,Hafiz
title	Methods to Break Seed Dormancy of Rhynchosia capitata, a Summer Annual Weed
title_short	Methods to Break Seed Dormancy of Rhynchosia capitata, a Summer Annual Weed
title_full	Methods to Break Seed Dormancy of Rhynchosia capitata, a Summer Annual Weed
title_fullStr	Methods to Break Seed Dormancy of Rhynchosia capitata, a Summer Annual Weed
title_full_unstemmed	Methods to Break Seed Dormancy of Rhynchosia capitata, a Summer Annual Weed
title_sort	methods to break seed dormancy of rhynchosia capitata, a summer annual weed
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2011
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000300021
work_keys_str_mv	AT haideralihafiz methodstobreakseeddormancyofrhynchosiacapitataasummerannualweed AT tanveerasif methodstobreakseeddormancyofrhynchosiacapitataasummerannualweed AT athernadeemmuhammad methodstobreakseeddormancyofrhynchosiacapitataasummerannualweed AT naeemasgharhafiz methodstobreakseeddormancyofrhynchosiacapitataasummerannualweed
_version_	1714205300909670400

Methods to Break Seed Dormancy of Rhynchosia capitata, a Summer Annual Weed

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