The Efficacy of Aspergillus niger and Aspergillus flavus for Activation Seeds Germination and Seedling Growth of Okra (Abelmoschus esculentus L.)

Abstract

The aim of this study was to evaluate the efficiency of the seeds germination and some growth parameters enhancement by Aspergillus Niger and Aspergillus flavus which isolated from soil Rhizospher of okra plant (Abelmoschus esculentus L.) under lab. and greenhouse conditions. The experiment was conducted according to RCBD design, and the parameters recorded were the percentage of seeds germination, plant length, fresh and dry weight of root and shoot systems. The results of soaking seeds in three concentrations (1× 103, 1 × 104 and 1 × 105 spore / ml) for 72 hours showed signification superiority for all tested concentrations in increasing seeds germination as compared with the control treatment(using D water for seed soaking only) with signification superiority of 1 × 105 spore / ml in comparison with all tested treatment. Greenhouse results revealed that all inoculating levels (1, 2, 3 and 5) g / (pot 1 kg soil) were significantly increased the percentage of seeds germination as compared to the control untreated treatment. The treatment 2 g / pot 1 kg soil of Aspergillus flavus showed the best plant length after 45 days of planting, fresh and dry weight of root and shoot systems, while Aspergillus niger showed that the inoculating level of 3 g / pot 1 kg soil was the best of all tested growth parameters.