The present study was carried out with ten
chickpea genotypes sown under three salinity
concentration (0 dSm-1
, 3 dSm-1
and 6 dSm-1
). Days to
50 per cent flowering, days to physiological maturity,
proline content, membrane injury index and total
chlorophyll content at 60 days after sowing showed a
strong positive association among each other. However,
the degree of association decreased as the salinity levels
increased from 0 dSm-1
to 6 dSm-1
. Further, seed yield
and yield related traits was strongly associated with
salinity concentrations. The results indicated that
higher salt concentrations were associated with increase
in duration of phenological parameters. The proline
content and membrane injury index were significantly
increased under salt stress conditions in all genotypes.
Higher chlorophyll content and seed yields were
recorded under 0dSm-1
(C1) than 3 dSm-1
and 6 dSm-1
(C2 and C3, respectively). Genotype ICCV96029 showed
highest membrane injury index (14.51) and lowest seed
yield value (3.28 g) at 6 dSm-1
. While, the genotypes
JG11 recorded highest proline content (30.27 mg g-1 fr.
wt) at 6 dSm-1
and chlorophyll content at 0 dSm-1
(2.979 mg g-1 fr. wt). This study indicated that
developing genetic variability by identifying salt
tolerant in diverse chickpea lines is one of the
appropriate strategies used to overcome salinity
problem in arid and semi-arid areas.
Keywords :
Salinity, proline, salt tolerance.