We describe and illustrate Croton restingae Sodré & Riina sp. nov., a new species endemic to restricted area in the state of Rio de Janeiro, Brazil, characterized by particular type vegetation Atlantic Forest known as restinga. The belongs sect. Adenophylli subsect. Laceratoglandulosus, which is supported morphology phylogenetic analysis based on nrDNA ITS sequence data. most closely relate...

To understand the mechanisms that control starch metabolism in the nectary, this study combined TEM analysis of floral nectaries in ornamental tobacco with gene expression analysis of a number of starch metabolism genes over the time course of nectary development. Using TEM, we observed an increase in amyloplasts accumulating from early developmental stages until stage 9 (S9), and their subsequ...

Background and aims: The onion (Allium cepa var. cepa) is an allogamous species in which male-sterile lines have been developed. However, the structure of flower floral nectaries only briefly described. objective this study to update anatomy data, comparing gynoecium androecium male-fertile lines, analyze three-dimensional nectary. M&M: Conventional optical scanning electron microscopy tech...