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Variability in the resistance of sodium chloride salinity within rice (Oryza sativa L.) varieties

Variability in the resistance of sodium chloride salinity within rice (Oryza sativa L.) varieties

New Phytologist 88(2): 363-373

Varieties of rice differ in their resistance to NaCl salinity. Within varieties, which are not homozygous lines, there is very high variability in Na uptake and in survival under saline conditions by the individual plants. This is in contrast with the relative uniformity in (for example) K uptake, dry weight and transpiration rate. There is a negative correlation between Na (and Cl-) accumulation by individual plants and their survival in saline conditions, demonstrating that variability among individuals fits the same pattern as has become generalized for varietal differences in glycophyte species. Possible reasons for this variability in Na and Cl- uptake within varieties, and its relevance to selecting salt-resistant varieties of rice, are discussed.

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Accession: 001030114

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DOI: 10.1111/j.1469-8137.1981.tb01731.x

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