تاثيرمستخلص الفطر Aspergillus niger في انسجة بادرات الماش

Abstract

A study was carried out to investigate the effect of Aspergillus niger culture filtrate on mung bean Vigna radiate seed. Seeds were socked in the fungi filtrate for 8 hours , free hand sectioning were made for tissue differentiation studies in root , hypocotyl and cotyledon of germinated seeds. The treated seeds showed a decrease in their germination percentage , and inhibition in the root , and hypocotyl growth , sections showed increased numbers of trichomes in the epidermis , disturbance in size, shape and organization of parenchyma cells in the cortex . Changes in vacuoles of endodermis cell making a continues vacuolar ring , and disappearing and disperse in some xylem bundles. Cross sections in cotyledon showed the mass starch grain distributed in all parenchyma cells which disappeared except from cells surrounding vascular bundles in treated sections , no changes were found in the pith .