Structure, development and histochemistry of embryo and endosperm in Sesbania speciosa Taub. Ex Engl.

Sesbania speciosa Taub. ex Engl. is an introduced plant cultivated in India for fibre, green manure and nutraceutical potential. The development histochemistry of the endosperm embryo this have not been yet at all reported present study was carried out effort to bridge that gap our knowledge. Two-micrometer sections seeds S. various stages were cut on a rotary microtome. DNA, ribonucleic acid insoluble polysaccharides found be locally localized. It observed ovule campylotropous bitegmic crassinucellate sac 7-celled structure. synergids possess PAS-positive filiform apparatus. All cells mature sac, before fertilization bereft polysaccharide grains. proper, during early embryogenesis, contains high concentration proteins nucleic acids but lacks At dicotyledonous stage, declines followed by synthesis suspensor massive. nuclear type. late globular pre-embryo micropylar 1/3 becomes cellular leaving rest free-nuclear. cytoplasm nuclei aggregate region are rich total acids. these metabolites, however, when cellular. aleurone layer, seed, compared other persisting layers.