Tinda Gourd is the most important summer vegetable widely grown in Pakistan. It contains a high amount of iron and other vitamins and minerals. Hence, its medicinal value is also high due to its ingredient profile. This field experiment was conducted in the vegetable area, Institute of Horticultural Sciences in the University of Agriculture, Faisalabad in order to recognize the morphological characteristics of Tinda gourd, fruit growth pattern, and the yield of Tinda (Praecitrullus fistulosus) gourd germplasm lines. Sixteen germplasm lines, in which one line was used as control, were sown and grown on flat beds in the field. The field experiment was arranged as Randomized Complete Block Design (RCBD) with three replications. Data related to the maturity time of fruit, fruit per vine, fruit weight in grams, fruit diameter and total yield obtained were recorded. The fruit texture was marked as phenotypic parameter. All parameters were collected and then analyzed statistically. All lines and replications showed different results from each other according to the chosen parameter. The variety L1 took 56 days to mature, closely followed by line L4 (56.66 days) and line L8 (56.33 days). There was not much difference in fruit per plant among Tinda gourd lines. Among them, 198 g fruits were found in line L0, followed by line L1 (224 g) and line L15
(225.00 g). Line L9 showed fruit diameter of 7 cm closely followed by line L1 (7.23 cm) and line L2 (7.23 cm). The maximum yield was observed in line L0 (599.33 grams) as compared to other lines. There was a significant difference in the yield of lines. Among them, line L4 showed 421 grams of yield closely.