PJB-2018-861
RESPONSE OF PLANT GROWTH AND YIELD IN TOMATO EXPOSED TO WATER STRESS
M. Rezwan Sarker
Abstract
The experiment was conducted in shed house at the Horticulture Research Farm of Sher-e-Bangla Agricultural University (SAU), Dhaka, Bangladesh during October 2015 to April 2016. Winter cultivar (BARI Tomato-14) was grown under different levels of moisture stress (control, 75% and 50% evapotranspiration moisture) in pot experiment using randomized complete block design with three replications to assess the effect of water stress on growth and fruit yield of tomato. The experiment results showed increased in moisture stress progressively reduced plant highest (92.73, 90.06 and 75.58 cm), leaf area (198.69, 187.56 and 176.66cm2), chlorophyll content (47.41, 40.87 and 38.10), leaf dry matter (18.07, 16.27 and 12.24), number of branch (13.55, 12.06 and 10.00) and leaf number (22.93, 22.44 and 20.34) under control (100%), 75% and 50% of evapotranspiration conditions, respectively. The result also showed a significant and positive correlation between fruit yield and growth and physiological parameters. The highest correlation was observed between fruit yield and leaf number (r2=0.97) followed by chlorophyll content (r2=0.95). The results suggest that leaf number and chlorophyll content measurements are suitable for assessment of water stress and screening water stress susceptible and tolerant tomato genotypes.
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