PubMed · 2000 · 34 citations · 0 references
Life SciencesPlant BiologyPlant SciencesPlant BiochemistryPlant PhysiologyStress PhysiologyAbiotic Stress ToleranceCrop Salt ToleranceSalinity PhysiologySalinity Stress PhysiologySalt Stress PhysiologyStress BiochemistryMembrane StabilityPhysiological Stress MarkersPhysiological Stress ResponsesPlant Response To SalinitySalinity StressSalinity Stress ResponsesSalinity Stress ToleranceSalt Stress Responses
Changes in biomass yield rates, cell membrane stability (CMS), malondialdehyde (MDA) content and in the levels of physiological stress markers such as proline and glycine betaine in two high yielding genotypes (S1 and ATP, salt tolerant and salt sensitive, respectively) of mulberry under NaCl salinity were studied. Biomass yield rates and CMS were significantly decreased in both the genotypes under stress conditions. Per cent of decrease in biomass yield rate and CMS was relatively less in S1 than in ATP. Salt stress results a significant increase in the accumulation of proline, by 6-fold in S1 and 4-fold in ATP. Glycine betaine content was also increased significantly in stressed plants. However, the per cent increase was more in S1 than in ATP. The level of lipid peroxidation as indicated by MDA formation was greater in ATP than in S1. These results clearly support the better salt tolerant nature of S1 compared to ATP genotype.