Molecular screening of rice (Oryza sativa L.) genotypes for submergence tolerance

Rice (Oryza sativa L.) is one of the most consumed staple food crops, providing food to about half of the world population. Submergence stress is an important constraint in rice cultivation faced by rice growers globally. In Kerala condition, flood prone areas like Kuttanad, Pokkali, as well as low...

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Autor principal:	A.S. Aryalekshmi1, Veena Vighneswaran1* and K. S. Shilpa2
Formato:	article
Lenguaje:	EN
Publicado:	Indian Society of Plant Breeders 2021
Materias:	o. sativa submergence tolerance sub1 qtl ssr marker Plant culture SB1-1110
Acceso en línea:	https://doaj.org/article/de0c92ee1e884f9e9a6898fe364263df
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spelling	oai:doaj.org-article:de0c92ee1e884f9e9a6898fe364263df2021-11-15T06:17:43ZMolecular screening of rice (Oryza sativa L.) genotypes for submergence tolerancedoi.org/10.37992/2021.1203.0940975-928Xhttps://doaj.org/article/de0c92ee1e884f9e9a6898fe364263df2021-09-01T00:00:00Zhttp://ejplantbreeding.org/index.php/EJPB/article/view/3700https://doaj.org/toc/0975-928XRice (Oryza sativa L.) is one of the most consumed staple food crops, providing food to about half of the world population. Submergence stress is an important constraint in rice cultivation faced by rice growers globally. In Kerala condition, flood prone areas like Kuttanad, Pokkali, as well as low lying paddy fields are mainly affected by submergence. Sub1 is the major quantitative trait locus (QTL) that confers submergence tolerance to rice genotypes. Earlier researchers have already identified the presence of Sub1 gene in rice varieties showing submergence tolerance. Such rice genotypes are characterized by a higher survival rates and better yield even after 2 weeks of submergence stress. The advancement of marker assisted selection (MAS) have a striking impact on developing improved Sub1 varieties which can meet the increasing demand for submergence tolerant varieties. The present study was planned to ascertain the rice genotypes having submergence tolerance by in vitro phenotyping followed by marker assisted selection. Genotypes KAUM 7 and KAUM 19 showed a better survival rates than other test genotypes during in vitro phenotyping. Among the ten genotypes evaluated for submergence tolerance with the help of SSR markers, KAUM 7 and KAUM 19 were identified with Sub1 QTL. Besides, this finding lays the foundation for further researches on breeding for submergence tolerance in rice. A.S. Aryalekshmi1, Veena Vighneswaran1* and K. S. Shilpa2Indian Society of Plant Breedersarticleo. sativasubmergence tolerancesub1 qtlssr markerPlant cultureSB1-1110ENElectronic Journal of Plant Breeding, Vol 12, Iss 3, Pp 673-677 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	o. sativa submergence tolerance sub1 qtl ssr marker Plant culture SB1-1110
spellingShingle	o. sativa submergence tolerance sub1 qtl ssr marker Plant culture SB1-1110 A.S. Aryalekshmi1, Veena Vighneswaran1* and K. S. Shilpa2 Molecular screening of rice (Oryza sativa L.) genotypes for submergence tolerance
description	Rice (Oryza sativa L.) is one of the most consumed staple food crops, providing food to about half of the world population. Submergence stress is an important constraint in rice cultivation faced by rice growers globally. In Kerala condition, flood prone areas like Kuttanad, Pokkali, as well as low lying paddy fields are mainly affected by submergence. Sub1 is the major quantitative trait locus (QTL) that confers submergence tolerance to rice genotypes. Earlier researchers have already identified the presence of Sub1 gene in rice varieties showing submergence tolerance. Such rice genotypes are characterized by a higher survival rates and better yield even after 2 weeks of submergence stress. The advancement of marker assisted selection (MAS) have a striking impact on developing improved Sub1 varieties which can meet the increasing demand for submergence tolerant varieties. The present study was planned to ascertain the rice genotypes having submergence tolerance by in vitro phenotyping followed by marker assisted selection. Genotypes KAUM 7 and KAUM 19 showed a better survival rates than other test genotypes during in vitro phenotyping. Among the ten genotypes evaluated for submergence tolerance with the help of SSR markers, KAUM 7 and KAUM 19 were identified with Sub1 QTL. Besides, this finding lays the foundation for further researches on breeding for submergence tolerance in rice.
format	article
author	A.S. Aryalekshmi1, Veena Vighneswaran1* and K. S. Shilpa2
author_facet	A.S. Aryalekshmi1, Veena Vighneswaran1* and K. S. Shilpa2
author_sort	A.S. Aryalekshmi1, Veena Vighneswaran1* and K. S. Shilpa2
title	Molecular screening of rice (Oryza sativa L.) genotypes for submergence tolerance
title_short	Molecular screening of rice (Oryza sativa L.) genotypes for submergence tolerance
title_full	Molecular screening of rice (Oryza sativa L.) genotypes for submergence tolerance
title_fullStr	Molecular screening of rice (Oryza sativa L.) genotypes for submergence tolerance
title_full_unstemmed	Molecular screening of rice (Oryza sativa L.) genotypes for submergence tolerance
title_sort	molecular screening of rice (oryza sativa l.) genotypes for submergence tolerance
publisher	Indian Society of Plant Breeders
publishDate	2021
url	https://doaj.org/article/de0c92ee1e884f9e9a6898fe364263df
work_keys_str_mv	AT asaryalekshmi1veenavighneswaran1andksshilpa2 molecularscreeningofriceoryzasativalgenotypesforsubmergencetolerance
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Molecular screening of rice (Oryza sativa L.) genotypes for submergence tolerance

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