Biologia floral, reprodutiva, polinizadores e viabilidade do pólen de Eugenia myrcianthes Nied

Abstract

The peach bush is native fruit very little known by the population, but that produces fruit that can meet niches of market avid by novelty. For this, it is important to establish knowledge about the plant, such as those related to floral biology, so that management strategies can be defined. The present work aimed to elucidate aspects of the floral and reproductive biology, and pollinators of the Eugenia myrcianthes Nied. The work was carried out at the Laboratory of Plant Physiology and Orchard of Native Fruits, UTFPR - Câmpus Dois Vizinhos. The characteristics of the floral biology of the plant were analyzed through: field evaluation phenophases from 5:00 a.m. to 8:00 p.m. on five nonconsecutive days following the opening and floral senescence, morphological characterization made through assessments with pachymeter And millimeter leaf of floral structures, reproductive biology through analyzes of pollen germination at different concentrations of sucrose and pollen source, and detection of pollinator recognition structures through luminescence and olfactory bioassay. The concentration of 5 % Sucrose promoted greater germination of peach pollen grains collected in post-anthesis. The main floral visitors of the species belong to the families Apidae, Melyridae and Chrysopidae. The anthesis of the flowers occurs until 9:00 am, and can remain open for up to 48 hours. The flowers have an odor of fruity, slightly sweet notes, which is secreted by the anthers.