Seed germination and early seedling growth performance of (Vigna radiata L. Wilczek) in response to aqueous powder extract of Capsicum annum L. and Coriandrum sativum L.

This study was conducted in laboratory with the aim to analyze the impact of red chill (Capsicum annum L.) and coriander (Coriandrum sativum L) aqueous powder extracts on seed germination and early seedling growth performance of green gram (Vigna radiata L. Wilczek). The increase in concentration of red chilli and coriander treatment responded differently to rate of seed germination percentage, root, shoot, seedling length and seedling dry weight of green gram. The treatment of red chilli and coriander powder extract at all concentration produce less significant effect on seed germination percentage of green gram. Red chilli powder extract at 3 % promoted root growth of green gram but not as much as control seedlings. Increase in concentrations of red chilli extract at 4% significantly p<0.05 decreased root growth of green gram. Generally, root lengths of green gram in different powder extracts of both spices was highly affected as compared to shoot length. Similarly, the treatment of coriander powder extracted affected root, shoot and seedling growth of green gram. Seedling dry mass of green gram significantly showed reduction with the treatment of coriander at 5% as compared to control (0%). Red chilli powder extract was proved the strongest inhibitor in seedling length of V. radiata as compared to coriander. The tolerance and seedling vigor in seedlings of V. radiata to red chilli extract were reduced when treated with 5% as compared to control. Similarly, the subsequent treatment of coriander at 1, 2, 3, 4 and 5% gradually decreased the tolerance indices values in seedlings of V. radiata.