RELATIVE PERFORMANCE OF COTTON GENOTYPES UNDER DIFFERENT LEVELS OF SALINITY IN IRRIGATION WATERS

M.S.UMA; D.P.VISWANATH and M.R.GURURAJA RAO.

doi:https://doi.org/10.29321/MAJ.10.A01110

Madras Agricultural Journal

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RELATIVE PERFORMANCE OF COTTON GENOTYPES UNDER DIFFERENT LEVELS OF SALINITY IN IRRIGATION WATERS

Author: M.S.UMA, D.P.VISWANATH and M.R.GURURAJA RAO.,

p-ISSN: 0024-9602, e-ISSN:2582-5321, Vol: 82, Issue: jan-jan,

DOI:https://doi.org/10.29321/MAJ.10.A01110

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Abstract

Seven genotypes of cotton were screened for tolerance to different levels of salinity in inigation water for four years. The genotypes showed significant variation in respect of mean kapas yield in all the four years. Further, the mean kapas yield decreased with increased salinity levels of imigation water. The slope of regression line was found to be inversely related to kapas yield, and, therefore, it offered a better criterion for appraisal of salinity tolerance. Based on mean salinity index, tolerance index value and the slope of regression line, MESR-17 and JK125-2-5 were identified as fairly tolerant genotypes to salinity.

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