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Impact of salinity on seed germination and seedling performance of tomato (Solanum lycopersicum L.) cv KC-1

Authors:

M. M. A. N. Shanika,

Eastern University, LK
About M. M. A. N.
Department of Crop Science, Faculty of Agriculture
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T. H. Seran

Eastern University, LK
About T. H.
Department of Crop Science, Faculty of Agriculture
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Abstract

An experiment was conducted to evaluate the effect of salt stress on seed germination and seedling performance of Solanum lycopersicum L. (tomato) cv KC-1 under controlled environment and also to select salt tolerant seedlings for plant regeneration. This experiment was laid out in a completely randomized design with three replications. Uniform seeds of tomato cv KC-1 were surface sterilized and placed on sterilized filter paper in the petridishes. Subsequently they were wetted with 5 ml of distilled water as a control or one of the NaCl (sodium chlorite) salt solutions (0, 20, 40, 60 and 80 mM NaCl. Seed germination percentage were calculated and seedling growth attributes were recoreded after seeding. Results showed that germination percentage decreased with increasing salinity levels (0 mM, 20 mM, 40 mM, 60 mM, 80 mM). Germination percentage was less than 50% for seed treated with NaCl above the level of 40 mM. Minimum value (18.3%) was recorded in 80 mM of salinity. Shoot and root lengths, dry and fresh weights of shoots and roots, relative water content and total dissolved salt content of first leaves (cotyledons) were significantly affected (P<0.001) by salt stress after 12 days of seeding. Salinity levels had a considerable effect on all parameters tested in this study. Salt content of first leaves increased with increasing NaCl concentrations. Germination and early seedling growth of Tomato cv. KC-1 was greatly affected in salt concentrations above 40 mM NaCl levels under controlled environmental conditions.
DOI: https://doi.org/10.4038/jsc.v11i2.26
How to Cite: Shanika, M.M.A.N. and Seran, T.H., 2020. Impact of salinity on seed germination and seedling performance of tomato (Solanum lycopersicum L.) cv KC-1. Journal of Science, 11(2), pp.1–11. DOI: http://doi.org/10.4038/jsc.v11i2.26
Published on 18 Dec 2020.
Peer Reviewed

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