Oxidative Stress and Changes in Antioxidant and Biochemical Constituents in Papaya (Carica papaya L.) under Salt Stress

Six papaya cultivars viz., Pusa Dwarf, Surya, Solo, CO5, Tainan and Red Lady were subjected to saline water salt stress continuously for a period of six months with saline water irrigation having an EC value of 0.6, 2.0 and 4 dsm-1. Among these, Red Lady was more sensitive while Tainan resisted salt...

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Autores principales:	M Subhas Chander, R Palaniappan
Formato:	article
Lenguaje:	EN
Publicado:	Society for Promotion of Horticulture - Indian Institute of Horticultural Research 2007
Materias:	oxidative stress antioxidants salt stress carica papaya Plant culture SB1-1110
Acceso en línea:	https://doaj.org/article/ffd6a00aa47847618ad56e6c23943373
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spelling	oai:doaj.org-article:ffd6a00aa47847618ad56e6c239433732021-12-02T15:17:43ZOxidative Stress and Changes in Antioxidant and Biochemical Constituents in Papaya (Carica papaya L.) under Salt Stress0973-354X2582-4899https://doaj.org/article/ffd6a00aa47847618ad56e6c239433732007-12-01T00:00:00Zhttps://jhs.iihr.res.in/index.php/jhs/article/view/621https://doaj.org/toc/0973-354Xhttps://doaj.org/toc/2582-4899Six papaya cultivars viz., Pusa Dwarf, Surya, Solo, CO5, Tainan and Red Lady were subjected to saline water salt stress continuously for a period of six months with saline water irrigation having an EC value of 0.6, 2.0 and 4 dsm-1. Among these, Red Lady was more sensitive while Tainan resisted salt stress. Under salt stress of 4 dsm-1, yield reduced by 10% in Tainan and by 24% in Red Lady compared to unstressed controls. T.S.S. measurement showed that quality of fruits was not affected by saline irrigation in both cvs. Malondialdehyde levels estimated after six months period of stress, as thiobarbituric acid reacting substances, did not increase in Tainan in contrast to substantial increase in Red Lady under stress conditions. There was substantial increase in levels of antioxidant compounds namely, carotenoids, phenols and flavonoids in Tainan compared to Red Lady. In Tainan there were significant increases in reducing and total sugars and sucrose under conditions of stress in contrast to sharp decreases in Red Lady. Under conditions of stress, there was considerable accumulation of total and reducing sugars and sucrose, across the varieties, possibly contributing to osmotic adjustment. Association of salt stress tolerance in Tainan with soluble sugar accumulation could be used as a breeding tool for selecting salt tolerant papaya genotypes.M Subhas ChanderR PalaniappanSociety for Promotion of Horticulture - Indian Institute of Horticultural Researcharticleoxidative stressantioxidantssalt stresscarica papayaPlant cultureSB1-1110ENJournal of Horticultural Sciences, Vol 2, Iss 2, Pp 134-138 (2007)
institution	DOAJ
collection	DOAJ
language	EN
topic	oxidative stress antioxidants salt stress carica papaya Plant culture SB1-1110
spellingShingle	oxidative stress antioxidants salt stress carica papaya Plant culture SB1-1110 M Subhas Chander R Palaniappan Oxidative Stress and Changes in Antioxidant and Biochemical Constituents in Papaya (Carica papaya L.) under Salt Stress
description	Six papaya cultivars viz., Pusa Dwarf, Surya, Solo, CO5, Tainan and Red Lady were subjected to saline water salt stress continuously for a period of six months with saline water irrigation having an EC value of 0.6, 2.0 and 4 dsm-1. Among these, Red Lady was more sensitive while Tainan resisted salt stress. Under salt stress of 4 dsm-1, yield reduced by 10% in Tainan and by 24% in Red Lady compared to unstressed controls. T.S.S. measurement showed that quality of fruits was not affected by saline irrigation in both cvs. Malondialdehyde levels estimated after six months period of stress, as thiobarbituric acid reacting substances, did not increase in Tainan in contrast to substantial increase in Red Lady under stress conditions. There was substantial increase in levels of antioxidant compounds namely, carotenoids, phenols and flavonoids in Tainan compared to Red Lady. In Tainan there were significant increases in reducing and total sugars and sucrose under conditions of stress in contrast to sharp decreases in Red Lady. Under conditions of stress, there was considerable accumulation of total and reducing sugars and sucrose, across the varieties, possibly contributing to osmotic adjustment. Association of salt stress tolerance in Tainan with soluble sugar accumulation could be used as a breeding tool for selecting salt tolerant papaya genotypes.
format	article
author	M Subhas Chander R Palaniappan
author_facet	M Subhas Chander R Palaniappan
author_sort	M Subhas Chander
title	Oxidative Stress and Changes in Antioxidant and Biochemical Constituents in Papaya (Carica papaya L.) under Salt Stress
title_short	Oxidative Stress and Changes in Antioxidant and Biochemical Constituents in Papaya (Carica papaya L.) under Salt Stress
title_full	Oxidative Stress and Changes in Antioxidant and Biochemical Constituents in Papaya (Carica papaya L.) under Salt Stress
title_fullStr	Oxidative Stress and Changes in Antioxidant and Biochemical Constituents in Papaya (Carica papaya L.) under Salt Stress
title_full_unstemmed	Oxidative Stress and Changes in Antioxidant and Biochemical Constituents in Papaya (Carica papaya L.) under Salt Stress
title_sort	oxidative stress and changes in antioxidant and biochemical constituents in papaya (carica papaya l.) under salt stress
publisher	Society for Promotion of Horticulture - Indian Institute of Horticultural Research
publishDate	2007
url	https://doaj.org/article/ffd6a00aa47847618ad56e6c23943373
work_keys_str_mv	AT msubhaschander oxidativestressandchangesinantioxidantandbiochemicalconstituentsinpapayacaricapapayalundersaltstress AT rpalaniappan oxidativestressandchangesinantioxidantandbiochemicalconstituentsinpapayacaricapapayalundersaltstress
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Oxidative Stress and Changes in Antioxidant and Biochemical Constituents in Papaya (Carica papaya L.) under Salt Stress

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