Reproductive Studies in Ipecac (Cephaelis ipecacuanha (Brot.) A. Rich; Rubiaceae): Flower Bud and Anther Size Associated to Male Gamete Development Stages

抄録

Reproductive studies were carried out on Brazilian accessions of Cephaelis ipecacuanha, which is considered a threatened species. Meiotic behavior was studied using squashing technique with 1% acetic carmine and floral buds and anther were measured for the following male gamete development stages: meiosis I, meiosis II, tetrads, microspores and pollen. Bud and anther length showed significant differences (P<0.01) among the stages of pollen development. There was high significant correlation between bud and anther length by Pearson correlation. Tukey test results indicated that each analyzed stage could be associated to bud length mean but it was not found the same association for anther length.