Oferta de Semillas y Ecología de la Germinación de una Especie Altoandina,como Aproximación a las Estrategias de Reclutamiento

Abstract

This work had as general objective to characterize the supply of seeds and germination ecology of the high Andean species (Myrteola nummularia) as an approach to recruitment strategies of the species; thus evaluated the supply of seeds and germination rates in controlled laboratory and natural conditions (EGE , EG2 and EGc1) . After the departure, with the results and meeting the research needs of the Botanical Garden of Bogota to find possible ways to speed up the germination process and to estimate their potential storage, two trials (EG3 and EG4) were mounted. Thus 4 Total in controlled laboratory trials conditions , each with 4 replications of 50 seeds evaluated were conducted every three days ; seeds without pretreatment ( EG1 ) , seed with 5% in moisture content (EG2) , seed scarification (EG3) and finally in 5% seed moisture content and scarification (EG4) . Under natural conditions it was made only a trial; seeds without pretreatment (EGc1), this three replicates of 30 seeds, evaluated once a week. To evaluate the seed supply the spatial pattern of the species, its coverage, number of fruits per ramet and number of seeds per fruit, all this was done with the help of three transepts each with 24 squares linear grid identified. As a pattern aggregation results for the species, this pattern in most clonal plants are obtained. Most mulch is presented in the transept 1 by soil composition and moisture of the site. For germination under controlled laboratory conditions they were obtained: 1% for EG1 to EG2 0% to 79% EG3 and EG4 52.2 %. Presenting the EG3 And what percentage EG4 trials and higher germination rates. EGc1 seed germination 0 %. What leads to the conclusion that Myrteola nummularia semmilas present a latent state which then came to be scarified, it presents one Orthodox desiccation tolerant seeds. Capable of keeping up with possible seed storage potential. As Myrteola nummularia a clonal plant, a large supply of seeds does not seem to offer an advantage to the establishment and possible recruitment of new individuals.