Journal of Bioscience and Agriculture Research
Effect of GA3 on Biochemical Attributes and Yield of Summer Tomato
M. S. Rahman, M. A. Haque and M. G. Mostofa
Crop Physiology Division, Bangladesh Institute of Nuclear Agriculture, Mymensingh, Bangladesh.
Crop Physiology Division, Bangladesh Institute of Nuclear Agriculture, Mymensingh, Bangladesh.
Abstract
An experiment was carried out in pots at Bangladesh Institute of Nuclear Agriculture, Bangladesh to evaluate influence of different concentrations of GA3 on biochemical parameters at different growth stages in order to maximize yield of summer tomato var. Binatomato-2. The concentrations of GA3 were 0, 25, 50, 75 and 100 ppm. They were applied at three stages, namely root soaking of seedlings before transplanting, vegetative and flowering stages. The experiment was laid out in a randomized complete block design with four replications. Results indicated that the highest chlorophyll and soluble protein contents were recorded when GA3 was applied through root soaking followed by vegetative stage and the lowest was found at the flowering stage. In contrast, the highest nitrate reductase activity was observed when GA3 was applied at the vegetative stage and the lowest activity was recorded at the flowering stage. The applications of 50-75 ppm GA3 had significantly encouraged the bio-chemical parameters studied at 50 DAT. The amount of GA3 applied at different stages had significant influence on the yield and yield attributes of summer tomato. The highest plant height was recorded when 50 ppm of GA3 was applied at the vegetative stage. While, the longest time to first fruit setting was required when the roots of the seedlings were soaked in 100 ppm GA3 solution. The application of 50 ppm GA3 by root soaking had significantly increased the number of flowers, fruits and fruit yield per plant but similar results were achieved when only 25 ppm GA3 was applied at the flowering stage. The fruit yield of tomato per plant increased linearly with the increased number of flowers and fruits per plant.
Key words: Summer Tomato, Gibberellic Acid, Chlorophyll, Soluble protein and Nitrate reductase activity
An experiment was carried out in pots at Bangladesh Institute of Nuclear Agriculture, Bangladesh to evaluate influence of different concentrations of GA3 on biochemical parameters at different growth stages in order to maximize yield of summer tomato var. Binatomato-2. The concentrations of GA3 were 0, 25, 50, 75 and 100 ppm. They were applied at three stages, namely root soaking of seedlings before transplanting, vegetative and flowering stages. The experiment was laid out in a randomized complete block design with four replications. Results indicated that the highest chlorophyll and soluble protein contents were recorded when GA3 was applied through root soaking followed by vegetative stage and the lowest was found at the flowering stage. In contrast, the highest nitrate reductase activity was observed when GA3 was applied at the vegetative stage and the lowest activity was recorded at the flowering stage. The applications of 50-75 ppm GA3 had significantly encouraged the bio-chemical parameters studied at 50 DAT. The amount of GA3 applied at different stages had significant influence on the yield and yield attributes of summer tomato. The highest plant height was recorded when 50 ppm of GA3 was applied at the vegetative stage. While, the longest time to first fruit setting was required when the roots of the seedlings were soaked in 100 ppm GA3 solution. The application of 50 ppm GA3 by root soaking had significantly increased the number of flowers, fruits and fruit yield per plant but similar results were achieved when only 25 ppm GA3 was applied at the flowering stage. The fruit yield of tomato per plant increased linearly with the increased number of flowers and fruits per plant.
Key words: Summer Tomato, Gibberellic Acid, Chlorophyll, Soluble protein and Nitrate reductase activity
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Citation:
Rahman, M. S., Haque, M. A. & Mostofa, M. G. (2015). Effect of GA3 on Biochemical Attributes and Yield of Summer Tomato. Journal of Bioscience and Agriculture Research 03(02), 73-78.
Rahman, M. S., Haque, M. A. & Mostofa, M. G. (2015). Effect of GA3 on Biochemical Attributes and Yield of Summer Tomato. Journal of Bioscience and Agriculture Research 03(02), 73-78.
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