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Genotypic Variability in Biomass Protein and Nucleic Acids in Four Linum Species to Sodicity Stress
Author(s) -
Singh A. K.,
Singh B. B.
Publication year - 1991
Publication title -
journal of agronomy and crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.095
H-Index - 74
eISSN - 1439-037X
pISSN - 0931-2250
DOI - 10.1111/j.1439-037x.1991.tb00927.x
Subject(s) - cultivar , linum , proline , biomass (ecology) , agronomy , biology , chlorophyll , fiber crop , horticulture , botany , malvaceae , amino acid , biochemistry
Abstract Genotypic variability among linseed cvs. Neelum, Garima, Subhra and Local was studied by subjecting the plants, throughout the growing season to salt stress (10 to 25 ESP) treatments induced by NaHCO 3 . General reduction in growth, leaf growth and biomass production (mg plant −1 ) was observed in all cultivars with increasing sodicity levels. Cultivars interaction responses varied significantly at 25 ESP level. Stress decreased total nitrogen, protein, RNA, DNA and chlorophyll contents in leaves however, proline accumulated in all cultivars. It was further observed that overall effect of salt stress was more pronounced at 60 DAS and beyond 20 ESP level. In general, variety Neelum was found to be more tolerant to sodicity than other cultivars at different stages of plant growth. It is therefore, concluded that at milder sodicity (up to 15 ESP) any variety of linseed may be grown but beyond 15 ESP only Neelum should be recommended for general cultivation.