Genotype X Environment Interaction in Yield Contributing Characters of Tomato (Solanurn lycopersicum L.)

Abstract

A field experiment was conducted at the farm of Horticulture. Sher-e- Bangla Agricultural University, Dhaka-l207,Bangladesh during the period from December 2012 to March 2013 to study the Genotype x Environment Interaction in Tomato (Solanurn lycopersicurn L.) by the 1)epartmcnt of Genetics and Plant Breeding. Randomized Complete Block Design (RCBD) with three replications was followed in the experiment. The parental genotypes used in the study were G i (BD-7279). G, (BD-7281). G3 (1313-7289), (34 (BD-7759), Gs (BD-7306), 06 (BD-7292), Cu (BARI Tomato-8), Os (BARI Tomato-9), 09 (BARI 'l'omato-14) and G10 (BARI Tomato-l5).Eight yield and yield contributing characters viz. days to first flowering, days to 50% flowering, days to maturity, plant height (cm), number of branches per plant, number of fruits per plant, fruit diameter (cm), fruit weight (g) were recorded. Analysis of variance for the genotypes and environments showed significant variation for all of the characters studied among the genotypes except fruit diameter which revealed the presence of considerable amount of genetic variability. Genotype x environment interactions was significant for all the traits which indicated that the genotypes responded well in environmental fluctuations (bi) and to their stability (S2di).All the parameters iniluenced significantly by environment and also by different genotypes except fruit diameter. 0 x F. interaction had significant influence on the parameters that were studied under the present experiment. The 51h environment. Cow dung + Urea ± TSP + MP were the best for all the characters studied. Environment, Env-4: Cow dung ± TSP + MP was also good for most of the characters. It was followed by Env- I: Compost and Env-3: Manure (cow dung). Genotype BARI Tomato-9 showed stable performance respecting fruit weight/plant and similarly BARI Tomato-14 for Days to 50% flowering. BARI Tomato-9 and BARI Tomato- 14 and BARI Tomato- I 5 for Number of fruits per plant and Fruit Diameter showed stable performance. Based on the findings of the present investigation it can be concluded that Genotype x environment interaction was present for the most of the characters. Environment x genotype was also significant for the most of the characters except fruit diameter. BARI Tomato-8, BARI Tomato-14 and BARI Tomato-iS were highly responsive i. e. suitable for rich environment in terms of yield per plant. BARI Tomato-9 showed stable performance considering fruit weight per plant.