PERFORMANCE OF TOMATO YELLOW LEAF CURL VIRUS (TYLCV)RESISTANT SUMMER TOMATO LINES AND THEIR SHELF LIFE

Abstract

An investigation was carried out at the experimental field of Olericulture division of Horticulture Research Centre, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur during summer season from June 2013 to November 2013 with a view to evaluateing the performance of TYLCV resistant summer tomato genotypes and their shelf life in Gazipur condition. Variations in relation to plant, floral, fruit, yield and yield contributing characters were observed among the genotypes. Days to 50% flowering ranged from 15.00 days to 27.00 days after transplanting. Yield and yield attributes of the genotypes differed significantly. The highest number of fruits per plant was recorded from the genotype BARI Hybrid Tomato8

(21.67) followed by CLN-3791 (18.33) while the genotype CLN-3859 and CLN-3906 both equally produced the minimum number of fruits per plant (7.33). Wide variation was recorded for single fruit weight among the genotypes. The highest single fruit weight was recorded in the genotype CLN-3791 (83.33 g) and the lowest single fruit weight was 48.67 g obtained from the line CLN-3860. Among the 12 genotypes the highest total soluble solids (5.33%) was recorded from the genotype CLN-3859 while, the lowest (3.67%) from CLN-3735. Significant variation was observed among different genotypes in respect of fruit yield per plant. Fruit yield per plant of different genotypes ranged from 0.436 kg to 1.616 kg. The genotype CLN-3791 yielded the highest amount of fruits per plant (1.616 kg/plant) which was close to CLN-3735 (1.496 kg/plant) and CLN-3792 (1.496 kg/plant). From this study it was found that the genotype CLN-3862 showed highest shelf life of 18.33 days. Correlation analysis for yield and yield attributes were estimated in this study. Number of fruits per plant and single fruit weight had positive and highly significant correlation with yield per plant but both positive and negative association with other attributes. Fruit length, fruit breath and total soluble solid had a negative correlation with fruit yield while number of locules had positive correlation with fruit yield.