What is it about?
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.
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Why is it important?
This topic is important considering the salt stress tolerant tomato plant engineering.
Perspectives
During stressed condition, the plants became stunted; leaves showed chlorosis, fruits became smaller and gradually died. Significant amounts of land in the southern region of Bangladesh remain uncultivable due to the high level of soil salinity. The salinity affected areas of Bangladesh are increasing rapidly. To overcome the salinity problem, saline soils can be used to grow salt-tolerant plants. Thus the development of salt-tolerant crops is a key to agricultural goal. Considering the growth and yield of tomato, fruits per plant increased in genotype G1 at the slight salinity and in genotype G5 at moderate salinity. Average fruit weight per plant and yield per plant is grown in genotype G8 at small salinity conditions. Based on yield, genotype G8 (BD- 7762) could be recommended to the farmers for cultivation under slightly saline to the moderate the saline soil in the coastal regions of Bangladesh as well as it could be used as a parent material for future hybridization program to develop the salt tolerant genotypes.
Dr. Md. Harun-Ur- Rashid
Sher-e-Bangla Agricultural University
Read the Original
This page is a summary of: Screening and Identification of Salt Tolerant Genotypes Based on Agromorphogenic Traits of Tomato (Solanum lycopersicum L.), Annual Research & Review in Biology, January 2017, Sciencedomain International,
DOI: 10.9734/arrb/2017/36855.
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