Pods and seeds traits in Stereospermum tetragonum dc

Stereospermum tetragonum DC. is a medicinal plant belonging to family Bignoniaceae. S. tetragonum is an important medicinal plant; therefore, it’s planting and conservation has been recommended to prevent its extinction. In the present study we estimated the pod length and width, the number of seeds per pod, and number of seeds per kilograms of seeds using a descriptive analysis and the Analysis of Variance. We specified and estimated a regression model to study the relationship between the number of seeds per pod (dependent variable) and the pod length (independent variable). The estimated average pod length, pod width, seed number per pod, weight of 100 seeds (gm)and number of seeds per kilograms of seeds are 32.5±2.2, 4.0±0.2, 27±3, 1.08±0.02 and 92403±1535, respectively. With a 1% increase in average pod length, the average seed number per pod is estimated to increase by 0.9%.The results of this study will be useful for a yield improvement program of the plant, planning a sowing program, and in calculating the seed prices.