Changes in morpho-physiological attributes in nine genotypes of linseed (Linum usitatissimum L.) under different level of salt (NaCl) stress

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Research Articles | Published:

Print ISSN : 0970-4078.
Online ISSN : 2229-4473.
Website:www.vegetosindia.org
Pub Email: contact@vegetosindia.org
Doi: 10.1007/s42535-021-00228-8
First Page: 647
Last Page: 653
Views: 1062


Keywords: Linseed, Salt Stress, Seed vigour, Antioxidant enzymes


Abstract


In the era of global climate change agricultural productivity is threatened by array of abiotic stresses with scarcity of irrigation water. Overcoming the deleterious effect of abiotic stressors is most prominent challenge for enhancement of germination, seedling character and physiological analysis. Therefore, the present study was carried out with the aim to evaluate the physiological responses of nine heterosis line of linseed (Linum usitatissimum L.). Seed germinated under four level of salinity stress (100 mM, 150 mM, 200 mM, and 250 mM NaCl) to explore the adaptive mechanisms involved. The germination percentage, root length, shoots length, and seedling vigor index significantly varied under different treatments of salt stress. Markers of oxidative stress, such as peroxidase (pox), superoxide dismutase (SOD), proline (pro) and malondialdehyde (MDA) might be the central components of adaptive mechanism of plants to maintain cellular ionic homeostasis under salt stress. The outcome of this study emphasized that the gradual increase of NaCl decreased all the morphological characteristics except the oxidative stress markers. We found that all the tested genotype showed differential response in terms of proline and MDA content along with peroxidase and SOD, to counteract the salt stress through maintenance of cellular osmotic adjustment. Among all the tested genotypes SHA7, followed by SHA8 and SHA9 performed exceeded record of germination and seedling characteristics through osmotic adjustment by the regulation of ionic homeostasis by oxidative stress markers.


Linseed, Salt Stress, Seed vigour, Antioxidant enzymes


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Acknowledgements


The authors wish to express their sincere gratitude to the Sam Higginbottom University of Agriculture, Technology and Sciences. Thanks to DST Inspire for financial support Atul Singh. Thanks to the Department of Biological Sciences for providing lab facilities to conduct research work.


Author Information


Singh Atul
Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj, India

Shekhar Shashi
Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj, India


Marker Shailesh
Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj, India


Ramteke P. W.
Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj, India

pwramteke@gmail.com