| Journal: | Revista de biología tropical |
| Database: | PERIÓDICA |
| System number: | 000146775 |
| ISSN: | 0034-7744 |
| Authors: | Camargo Ricalde, Sara L1 Grether, Rosaura |
| Institutions: | 1Universidad Autónoma Metropolitana, División de Ciencias Biológicas y de la Salud, México, Distrito Federal. México |
| Year: | 1998 |
| Season: | Sep |
| Volumen: | 46 |
| Number: | 3 |
| Pages: | 543-554 |
| Country: | Costa Rica |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Analítico, descriptivo |
| English abstract | Mimosa tenuiflora (Willd.) Poir. is an important natural resource in Mexico, due to its diverse uses. However, seed germination, dissemination and seedling establishment of this species had not been studied up to date. Fruits and seeds were collected in the State of Chiapas, Mexico (S. L. Camargo el al. 118, UAMIZ). Germinatíon experiments were carried out afier four years of seed storage; I 935 seeds were sown in Petri dishes containing moistened Wathman filter papero Optimum temperatures were determined in a gradíent 5-40° C, with continuous light for mechanically scarified and non scarified seeds. Three photoperiod experiments were made: a) continuous light, b) constant darkness and e) 12 hr lightJ12 hr darkness. Three germinate pretreatments were applied: al meehanical scarification, b) sulfuric acid scarification, el fire scarification and d) control. Three replicates of 15 seeds each were made for each variable and pretreatment. Standard deviations (S) were determined, a one-way analysis of variance (ANOVAl and media comparison (Scheffé's test) were applied (p<0.05). Analysis of fruit and seed dissemination and seedling establishment was made qualitatively on the basis of field and laboratory observations; radius of dissemination of the fruits from the mother plant was measured; development of laboratory grown seedlings was followed during three months. Seeds germinated al 10-3(J°C; however, the highest percentages of geCllÚnation were obtained at 200e (84.44%) and 25°C (95.55%); seeds are indistinctIy photoblastic and percentages of germination, afier the three germinate pretreatments, were: control (24.44-35.55%), mechanical scarification (84.44-88.88%), sulfuric acid searificatÍon (73.33-91.11%) and fire scarification (0% l |
| Disciplines: | Biología |
| Keyword: | Botánica, Fisiología vegetal, Reproducción y desarrollo, Diseminación, Germinación, Semillas, Mimosa tenuiflora |
| Keyword: | Biology, Botany, Plant physiology, Reproduction and development, Dissemination, Germination, Seeds, Mimosa tenuiflora |
| Full text: | Texto completo (Ver HTML) |
