Evaluation of Some Tomato Genotypes against Tomato Fruit Borer Infestation, Growth Parameters and Some Chemical Constituents

A field experiment was conducted at Bangladesh Institute of Nuclear Agriculture (BINA) Farm, Mymensingh from October 2007 to March 2008 with a view to evaluate the physical and chemical properties, nutrient content and infestation rate of tomato fruit borer of different mutants and varieties. The treatments consisted of six mutants viz; TM-13, TM-105, TM-110, TM-133, TM-152, TM-155 and two varieties BARI tomato-7 and BINA tomato-5. The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications. The infestation of tomato fruit borer varied significantly among the mutants/varieties. The number of fruit borer was 2.15-5.98. The following growth parameters, yield contributing characters and chemical composition of the tomato mutants/varieties were studied which were 1.03-1.40 cm stem diameter, 14.9-19.5 cm2 leaf area, 10.08-20.10 mm-2 leaf hair, 36.7-52.0 number of leaves plant-1, 13.86-24.67 number of fruits plant-1, 24.1- 60.2 g single fruit weight, 3.69-4.0 pH, 17.1 -25.2 mg 100 g-1 vitamin-C, 0.307-0.408% TA, 2.34-2.75% reducing sugar, 0.93-1.20% non-reducing sugar. Tomato fruit borer infestation was negatively correlated with leaf hair and number of fruit plant-1 but positively correlated with stem diameter, leaf area, leaf number plant-1 single fruit weight, non-reducing sugar, pH and titrable acidity. It is concluded that TM-133 and TM-13 mutants were the best among the tested verities respectively.