Abstract:
Screening methods that are effective in the early s
tage of growth will potentially
provide the largest quantity of breeding material.
Although various screening methods
under greenhouse have been proposed, potential effe
ctive approaches must be described a
good correlation with results under field condition
s. This study was aimed to assess the
correlations between traits obtained from four salt
screening methods, hydroponic
culture, soil culture, pot and field methods. Salt
injury scores from the soil culture and
hydroponic methods at the seedling stage under sali
nity of 12 dS m
-1
, were not correlated,
but were able to identify the variety Pokkali as be
ing a tolerant variety, and IR29 as a
susceptible variety. Traits in the pot and field ex
periments were significantly related to
the rice varieties and salt salinity levels. The co
rrelations at the seedling stage were found
between salt injury score in the soil culture and p
lant height, proline content of leaves and
panicle length in the field experiment (r= -0.886,
r= 0.992 and r= -0.933, respectively).
Also, traits from the pot experiment showed signifi
cant correlations with those from the
field experiment. Salt injury scores obtained from
soil culture method provide a simple
and efficient method for indirect selection for sal
t tolerance in rice.
Keywords:
Hydroponic culture, Na
+
/K
+
ratio, Rice, Salt tolerance, Soil culture.
