109
3.3.3.5 Leaf osmotic potential
The results showed high effect of salinity on leaf osmotic potential among linseed
genotypes (Table 3.3.5). The leaf osmotic potential decreased to 109%
of respective
control in salt tolerant genotypes NO-303 and 637-72 respectively at 200
mM NaCl
while the magnitude of leaf osmotic potential was 107% of respective control in salt
sensitive genotypes S-907 and C-99-3-115 respectively at the same level of salt stress.
Genotypes showed progressive decrease in their leaf osmotic potential with increasing
salinity and it varied from -1.07 to-1.11 MPa in S-907 to from 1.10 to -1.13 MPa in
NO-303genotype at 100 mM NaCl while at control
almost similar leaf osmotic
potential was restored by all genotypes. At 200mM NaCl,
leaf osmotic potential of
NO-303 (-1.20 MPa) and 637-72 (-1.19 MPa) genotypes was the maximum while that
of C-99-3-115 (-1.15 MPa) and S-907 (-1.14 MPa) was the minimum (Table 3.3.5).
On percent of control basis, genotypes showed the order as 637-72 = NO-303 > S-907
= C-99-3-115.
Table 3.3.5. Leaf osmotic potential (-MPa) of linseed genotypes at different salinity
levels
Do'stlaringiz bilan baham: