Comparative performance of tomato (solarium lycopersicum) genotypes for heat tolerance in summer and winter

Abstract

Abstract : The study was conducted at the experimental farm of Bangladesh Agricultural Research Institute, Gazipur during October 2002 to March 2003 and May to September 2003. In winter season fruit set ranged from 52.53% in TM028 to 86.51 % in TM006 whereas the range was far below under high temperature conditions in summer which were 2.10% in TM002 to 41.40% in TM051. The accessions TM014, TM026, TM034, TM051, TM052 and TM053 had more than 17% fruit set in summer. Individual fruit weight in winter ranged from 7.89g in TM021 to 52.95g in TM025 whereas it varies from 5.25g in TM036 to 43.38g in TM025 in summer season. Yield range per plant in winter varied from 1319.0g in TM047 to 4460.0g in TM025 whereas it varied from as low as 10.50g in TM036 to moderately high 1591.74g in TM051 in summer.