Performance of hybrid lines of pointed gourd (Trichosanthes dioica Roxb) for yield and yield attributes

Abstract

A field experiment was conducted at the Regional Agricultural Research Station, Ishurdi, Pabna during the growing season of 2013-14 with eighteen hybrid lines of pointed gourd and BARI Hybrid Patal -1 as check to observe their performances for yield, yield attributes and other morphological characters. The experiment was laid out in randomized complete block design with three replications. The maximum vine length (242.00 cm) and nodes/plant (18.30) was recorded from PG018xM₂. Shoots/plant ranged from 12.50 (PG027xM₂) to 4.66 (PG008 M₁). The maximum number of fruits/plant (160.00) was obtained from PG009xM₂ followed by PG012xM₁ (154.66). Individual fruit weight was recorded highest (50.10 g) in PG027xM₂, which was very close to PG008xM₂ (48.00) and PG018xM₂ (47.00 g). Weight of fruits/plant ranged from PG009xM₂ (6.86 kg) to PG022xM₁ (3.01 kg). The highest pulp weight was recorded in PG027xM₂ (44.20 g) which was statistically similar to PG008xM₂ (42.20 g). Three different leaf colour (light green, green and deep green), two types of leaf tip (pointed and blunt) and four types of leaf margin (slightly serrated, serrated, entire and undulated) were found among the hybrid lines. Four fruit colour (whitish, light green, green and dark green), four fruit stripes (no stripe, white, green white and light green) and three types of fruit curvature (slightly curved, curved and straight) were observed in different lines. The line PG009xM₂ showed better performance in respect of fruits/plant and weight of fruits/plant and thus gave the highest yield (45.74 t/ha). The lines PG008xM₂, PG007xM₂, PG017xM₂, PG027xM₂ and PG014xM₁ also produced better yield (39.23 - 35.58 t/ha). Therefore, the lines PG014xM₁, PG007xM₂, PG008xM₂, PG009xM₂ and PG017xM₂ should be subjected for further evaluation to release as variety.

Bangladesh J. Agril. Res. 43(3): 383-393, September 2018