Investigating physiological and biochemical

3.2.3.4 Shoot fresh and dry weight (g plant
-1
) 
 
The shoot fresh and dry weight was recorded at the end of experiment for all the 
four linseed genotypes at three treatment levels i.e. control, 100 and 200 mM NaCl. 
Shoot fresh (SFW) and dry weight (SDW) of all the genotypes was significantly 
reduced with the addition of NaCl to the growth medium and this reduction was the 
maximum at 200 mM NaCl (Table 3.2.2). Response of genotypes was statistically 
different from each other at both the levels of salinity and the maximum SFW (13.30 
g) and SDW (1.11 g) was measured in 637-72 while the minimum SFW (7.87 g) and 
dry weight (0.92 g) was noted in C-99-3-115 under non saline control. Genotypes 
showed sharp decrease in SFW and SDW with increasing levels of salinity and SFW 
decreased from 11.61 g to 10.21 g in NO-303 and from 13.30 g to 11.20 g in 637-72 

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75 
genotype. Similarly SDW decreased to 1.03 g in 637-72 followed by NO303 (0.85 g) 
at 100 mM NaCl application. Salt sensitive genotypes attained lower fresh and dry 
weight at both the levels of salinity (Table 3.2.2). On the basis of SFW and SDW, 
genotypes were categorized as: 637-72 > NO-303 > S-907 > C-99-3-115 at all the 
treatment levels. On the other hand, salt tolerant genotypes exhibited different 
percentage of SFW and SDW at both salt levels and genotype NO-303 produced more 
SFW (88%) as compared to 637-72 at 100 mM NaCl.

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76 
Table 3.2.2. Relative growth rate, shoot fresh and dry weight of linseed genotypes at different salinity levels.
 
Genotypes 
RGR (g g
-1
 d
-1
) 
SFW (g plant
-1