Germination and growth promoting activity of crude extract and extracted chitosan of Rastrelliger kanagurta and Eubleekeria splendens on mung beans

[摘要] Indian mackerel, Rastrelliger kanagurtais pelagic and schooling fishes, widely distributed in the Indo-west Pacific region. Eubleekeria splendens is also known as slimy, belong Leiognathidae family. They inhabit marine and brackish waters in the Indian and West Pacific Oceans. Aqueous crude extract was prepared from dried fish and chitosan was extracted from the respective fish scales. The germination and growth promoting activity of the crude extracts and extracted chitosan was studied using mung bean. The prepared samples were prepared in different concentration and the seeds were soaked and germination rate was determined after 24hr. 20ppm of E.splendens chitosan was found to be the lowest optimum concentration. the soaking time required for seed germination was studies and it was found that Chitosan gave good germination rate at 4-6hr soaking. Stem height, total numbers of leaves, average leaf length and width were noted after one week of growing the seed in the extracts and extracted chitosan. E.splendens Chitosan showed higher growth promoting activity than R.kanagurtachitosan. the study confirmed that just like shrimp and crab chitosan, extracted chitosan from fish scales also shows good germination and growth promoting activity.

[学科分类] 药理学