Biologia reprodutiva de Copaifera langsdorffii Desf. (Leguminosae, Caesalpinioideae)
Furkejuvvon:
| Váldodahkki: | |
|---|---|
| Almmustuhttinbeaivi: | 2002 |
| Eará dahkkit: | |
| Materiálatiipa: | Article |
| Giella: | eng |
| Gáldu: | Repositório Institucional da UnB |
| Download full: | http://repositorio.unb.br/handle/10482/25872 https://dx.doi.org/10.1590/S0100-84042002000300007 |
Čoahkkáigeassu: | A survey on the phenology and reproductive biology of Copaifera langsdorffii Desf. was carried out in a cerradão area at Fazenda Capim Branco, Uberlândia, MG. Flowering occurs during the rain season and seed dispersal during the dry season. Flowers are pale-green, 0.5 cm in diameter, weakly zigomorphic and organized in paniculate inflorescences. They are highly odoriferous, one-day flowers. Anthesis begins at about 5:00 h. The nectar production is very small (0.2 ml) with 49% of sucrose equivalents. The most frequent flower visitors and pollinators were Apis mellifera, Scaptotrigona cf. depiles and Trigona spinipes bees. Controlled hand-pollinations showed that the species is mostly self-sterile and non-apomictic. However, pollen tubes were observed growing down to the ovary and penetrating the ovules in self-pollinated pistils, a fact which suggests late-acting self-sterility phenomena or inbreeding depression. Fruit-set was always low and related to low flower to fruit conversion, may be due to inefficient pollination and fruit predation. |
Geahča maid: Biologia reprodutiva de Copaifera langsdorffii Desf. (Leguminosae, Caesalpinioideae)
- Fenologia da copaíba (Copaifera langsdorffii Desf. -- Leguminosae, Caesalpinioideae) em uma floresta semidecídua no sudeste do Brasil
- Alterações estruturais e fisiológicas em sementes de Copaifera Langsdorffii DESF. - Leguminosae-Caesalpinioideae submetidas ao tratamento com hipoclorito de sódio
- Regeneração e estabelecimento de Copaifera langsdorffii (Desf.) e Emmotum nitens (Benth.) Miers em condições naturais
- Micodiversidade associada a árvores de Copaifera langsdorffii Desf. em Brasília, Distrito Federal
- Sistema distílico e biologia reprodutiva de cinco espécies de Psychotria L. (Rubiaceae) em dois fragmentos do sudeste Goiano
- Crescimento e repartição de biomassa em plântulas de copaifera langsdorffii desf. submetidas a diferentes níveis de sombreamento em viveiro
