Screening and Identification of Salt Tolerant Genotypes Based on Agromorphogenic Traits of Tomato (Solanum lycopersicum L.)

Abstract

A pot experiment was carried out to observe the performances of fifteen tomato genotypes under three different salinity treatments in the net house of Genetics and Plant Breeding Department of Sher-e-Bangla Agricultural University, Dhaka during November 2013 to March 2014. Two factorial experiment comprised of fifteen tomato genotypes viz. G1 (BD-7289), G2 (BD-7291), G3 (BD-7298), G4 (BD-7748), G5 (BD-7757), G6 (BD-7760), G7 (BD-7761), G8 (BD-7762), G9 (BD-9011), G10 (BD-9960), G11 (BARI Tomato-2), G12 (BARI Tomato-3), G13 (BARI Tomato-11), G14 (BARI Hybrid Tomato-4), G15 (BARI Hybrid Tomato-5) and three salinity treatments T1 (control), T2 (8 dS/m), T3 (12 dS/m) were laid out in Completely Randomized Design (CRD) with three replications. Seedlings were transplanted 30 days age to leading plastic pots, and two salinity treatments 8 dS/m and 12 dS/m were applied after seven days of transplanting. The results revealed that tomato genotypes and salinity treatments both significantly different with the agro-morphogenic traits of the tomato plant. Nearly all traits reciprocated negatively as the salinity level increased except days to first flowering and maturity. Average fruit weight was increased in genotype G8 for both the stresses than the control condition. Yield per plant was recorded in the same G8 genotype for T2 and reduced the minimum for treatment T3. Therefore, genotype G8 could be recommended for higher yield in the coastal regions of Bangladesh. These genotypes could also be served as parent material for future hybridization or genetic transformation program.