ABSTRACT

The experiment was conducted with tossa jute (Corchorus olitorius L) at Jute Agricultural Experimental Station, Jagir, Manikgonj during 2019. Ten F2 cross combinations were included in this experiment. The mean, variance and range were computed for six morphological characters viz. plant height (m), base diameter (mm), green bark thickness (mm), green weight without leaves (g)/plants, fibre yield (g) /plants and stick yield (g)/plants. In this study the highest plant height was recorded from the cross, P5 x P2 (3.26 m), which was followed by the cross, P3 x P4 with 3.25 m. The ranges for two crosses were 2.75-3.63 m and 2.22-3.60 m, respectively. The highest base diameter and bark thickness was derived from the cross, P3 x P4. The highest green wt. without leaves was recorded 250.04 in the base population against the cross P8 x P4 and the character also the highest in the same cross with 262.87 in the selected population. The fiber weight was the maximum in the progenies of the cross, P8 x P4 (20.39 g) for the base population, also it was the highest for the same cross with 23.53g in selected population. The highest stick weight was obtained from the cross, P2 x P7 with 53.0 g in selected population, which was followed by the cross, P3 x P4 with 51.91g in selected population.The progenies of the cross, P8 x P4 (Acc-3860×Acc-2381) produced the highest fiber weight (23.53 g), which was followed by the cross, P3 x P4 (JRO-524×Acc-2381) further it produced the highest base diameter (20.16 mm), suggested the appreciable potential of the two crosses to evolve outstanding advanced lines of tossa jute in Bangladesh agriculture. 

Key words: Selection, segregating generation, tossa jute