DEVELOPMENT OF SUMMER HYBRID TOMATO VARIETY FOR HEAT TOLERANCE. Das AC*, Debnath B, Rob MM, Ferdousi J and Islam MS

BANGLADESH JOURNAL OF PROGRESSIVE SCIENCE & TECHNOLOGY: BJPST
BJPST: 13(2): 054-057 [July, 2015]   ISSN: 2305-1809 (Online version)
ABSTRACT

 A field experiment was conducted to develop summer hybrid tomato variety for heat tolerance. Among the 10 cross combination maximum number of crossed fruits per plant was harvested from C41 x FP5 (31.0) while it was the lowest for FP5 x C71 (19.0). The average seed yield per plant was ranged from 2.78 g to 7.05 g of which the maximum amount of  F1 seeds harvested from the cross of C51 x C71 (7.05 g) followed by C11 x FP5 (6.58 g). Results clearly indicated that the summer tomato hybrid lines had the genetic potentiality to produce fruit during summer season. The highest number of fruits per plant was recorded from the hybrid C41 x C11 (27.07) that were followed by C51 x C71 (22.27). Individual fruit weight was ranged from 20.40 g to 46.27 g of which C11 x C71 produced the heaviest individual fruit. Among the hybrids, C41 x C11, C51 x C71 and C11 x C71 produced more than 1.0 kg of fruit per plant. A remarkable increase in number of fruit per plant, individual fruit weight and fruit yield per plant was observed for most of the cross combinations. The cross combination C41 x FP5 exhibited the highest heterosis over better parent (162.9%) for number of fruits per plant followed by C51 x C71 (80.56 %). The highest heterosis for individual fruit weight was recorded from C11 x C71 (66.01) followed by FP5 x C71 (65.71 %). Among the hybrid lines, C41 x FP5 showed the highest heterosis for fruit yield per plant (216.7 %) followed by C51 x C71 (158.3%).

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