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SCREENING OF RICE GENOTYPES FOR SALT TOLERANCE IN RELATION TO MORPHOLOGICAL TRAITS AND YIELD COMPONENTS UNDER FIELD CONDITION
BIBHA RANI, V.K. SHARMA

Published in: International Journal of Agriculture Sciences
Volume- 9, Issue-33, pp.4493-4497, Jul 2017
DPI :-> 16.10077.IJAS.2017.V9I33.44934497.1779



Abstract
Eighteen rice genotypes were screened under field condition for different morphological traits and yield component i.e. chlorophyll content, days to 50% flowering, plant height, flag leaf area, tiller number per plant, panicle length, biological yield, number of panicle per plant, number of spikelet per panicle, number of filled and unfilled grainper panicle, 100 seed weight, grain yield per plant, root length, root biomass and root volume. Five tolerance indices for grain yield per plant i.e. TOL, SSI, MP, GMP and STI were also studied in the present investigation. The soil of salt affected experimental field, in which the genotypes were evaluated for their tolerance to salinity in the present study, was classified as sodic soil (pH 9.62, EC 0.37 dSm-1, SAR 9.86 and ESP 12.70). The experiment was carried out in randomized block design (RBD) with three replications in kharif season of 2013. The result was compared with the experiment done in normal soil condition (pH 7.74, EC 0.41 dSm-1, SAR 11.32 and ESP 14.32). All the morphological characters show significant reduction in various growths attributes of rice genotypes under salt stress. However, the extent of growth reduction under salt stress was specific and dependent on genotypes. Salt-sensitive genotype IR64 showed more percent reduction over control (% ROC) in compared to tolerant genotypes. The least % ROC for all the plant attributes was recorded by tolerant check CSR36. Tolerance indices MP, GMP and STI were found to be positively and significantly correlated with grain yield under both normal and stress condition.

Key-Words / Index Term
Morphological traits, Yield components, Tolerance indices, Percent reduction over control (% ROC), Correlation

How to cite this article
BIBHA RANI, V.K. SHARMA , “SCREENING OF RICE GENOTYPES FOR SALT TOLERANCE IN RELATION TO MORPHOLOGICAL TRAITS AND YIELD COMPONENTS UNDER FIELD CONDITION”, International Journal of Agriculture Sciences, 9, Issue-33, pp.4493-4497, Jul 2017. DPI:16.10077.IJAS.V9.I33.1779