Abstract
Four chickpea cultivars (CSG 9651, BG 267, CSG 8962 and DCP 92-3) were grown to maturity under salinity conditions of 0, 4, 6 and 8 dS mE-1. Nitrate reductase activity decreased progressively with increasing salinity, although variation was seen between the cultivars. Cultivar CSG 9651, a kabuli or Mediterranean type, appeared to be the best adapted to saline stress, maintaining growth and showing efficient nitrate reduction under these conditions.
Highlights
The inhibitory effect of salinity on Nitrate reductase activity (NRA) is known in many crops (Katiyar and Dubey, 1992; Khan, 1996; Garg et al, 1997)
The aim of the present study was to determine how salinity affects NRA in leaf and root tissues in chickpea cultivars differing in salt tolerance
Seeds of chickpea cultivars DCP 92-3, CSG 8962, BG 267 and CSG 9651 were selected after preliminary investigations into 10 cultivars obtained from the Central Soil Salinity Research Institute (CSSRI), Karnal, India
Summary
The continuous deposition of salts in soils affects plant growth, nutrient uptake and metabolism due to osmotic stress, and causes ion toxicity and nutritional imbalances (Dubey, 1994). The inhibitory effect of salinity on NRA is known in many crops (Katiyar and Dubey, 1992; Khan, 1996; Garg et al, 1997). The aim of the present study was to determine how salinity affects NRA in leaf and root tissues in chickpea cultivars differing in salt tolerance.
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