Vol. 12, Issue 9 (2023)

Author(s):
Shubhangi K Maraskole, SV Sawardekar, AK Singh, BD Waghmode, AV Mane and MC Kasture

Abstract:
An experiment was conducted in collaboration with the school of water stress management, ICAR-NIASM, Malegaon, Baramati, during 2021-2022 to evaluate the rice (Oryza sativa L.) genotypes. 20 rice genotypes were collected from R.A.R.S., Karjat and K.L.R.S., Panvel, including checks. Plants treated with salt had an electrical conductivity of 6 dSm^-1 and 9 dSm^-1, respectively, with control (3 dSm^-1) (Coastal saline soil with no additional salts) during the seedling stage. The relative water content of the fully expanded third leaf at the top seedling was measured from three independent biological replicates of both control and stressed plants for three days after the imposition of stress from all treatments was weighed. Among 20 rice genotypes, at 3 dSm^-1, FL 478 and CST 7-1 have maximum relative water content, but there was no discernible difference between these two genotypes, where Karjat 6 had the lowest relative water content significantly. At 6 dSm^-1, Kala rata had the highest relative water content, followed by CST 7-1 and SR 3-9. However, Karjat 6 had minimum relative water content to check FL 478 and Karjat 4. At 9 dSm^-1, Kala rata and CST 7-1 had significantly maximum relative water content followed by SR 3-9 and Damodar; however, Karjat 6 showed minimum relative water content to that of check FL 478 (78.34%) and Karjat 4.