Seed anatomy and histochemistry of Myrciaria dubia (Kunth) McVaugh, an Amazonian Myrtaceace

Myrciaria dubia, or camu-camu, is a perennial species that produces fruits of great nutritional interest because they have high levels antioxidant compounds. The occurs spontaneously on Amazonian river margins and requires low amount resources. Further, dubia are collected via extractivism managing this process still at an incipient stage. present study investigated the anatomical histochemical aspects seeds five clones dubia. external seed coat has epidermis comprising single layer tabular cells rich in phenolic content, pectins, alkaloids, terpenes. cotyledons uniseriate epidermis, polyhedral parenchyma with concentration starch grains, dispersed vascular bundles, idioblasts lipids, proteins. embryonic axis protoderm cuboid, juxtaposed thin walls conspicuous nucleus. Secondary metabolites mainly coat. This work provides new information about seeds. No differences structural characteristics ovules were recorded among since these most conserved reproductive organs plants.