Ecological effects of home spices red chilli (Capsicum annum) and coriander (Coriandrum sativum) on germination and growth of green gram

The releases of allelochemical substances from plant species effects germination and growth of plants. This investigation demonstrated the effects of red chilli and coriander powder extracts on seed germination and seedling growth of green gram. The present work showed the variable effects of both home spices on seed germination, root, shoot, seedling length and seedling dry weight of green gram when used at higher concentration as compared to control. However, low concentration of red chilli at 3 % promoted the root growth of green gram but not as much as control seedlings. Increase in concentrations of red chilli extract at 4%, root growth of green gram was significantly p<0.05 decreased as compared to control. Red chilli extract treatment also significantly decreased the shoot, height and seedling dry weight of green gram plants as compared to control. Generally, root lengths of V. adiate in different aqueous extracts of both spices were highly affected as compared to shoot length. Similarly, the treatment of coriander powder extracted highly affected root, shoot and seedling growth of green gram. Seedling dry weight of green gram also significantly showed reduction with the treatment of coriander at 1 to 5% as compared to control. Red chilli powder extract was found the strongest inhibitor in seedling growth performance of V. radata as compared to coriander. The tolerance in seedlings of V. adiate to red chilli extract were reduced with the values 36.45, 33.33, 40.62, 23.95 and 18.75 percent when treated with 1, 2, 3, 4, and 5% as compared to control, respectively. The subsequent treatment of coriander at 1, 2, 3, 4 and 5% decreased the tolerance indices values in seedlings of V. adiate by 47.66, 38.34, 36.24, 25.07 and 17.92 percent as compared to control.