Morphology, germination, and geographic distribution of Pentaclethra macroloba (Fabaceae): a hyperdominant Amazonian tree
نویسندگان
چکیده
منابع مشابه
Effect of clonal reproduction on genetic structure in Pentaclethra macroloba (Fabaceae: Mimosoideae).
The existence of monodominant forests on well-drained soils in tropical regions has been widely reported. Such forests most likely result from a combination of both ecological and evolutionary factors. Under conditions of high seed and seedling mortality, vegetative reproduction could create a reproductive advantage leading to forest dominance, and profoundly affect the distribution of genetic ...
متن کاملTriterpenoid Saponins from Stem Bark of Pentaclethra macroloba
Duas novas e duas conhecidas saponinas triterpênicas foram isoladas da casca do caule de Pentaclethra macroloba. As estruturas foram determinadas usando uma combinação de técnicas de RMN homo(1D: RMNH, RMNC-{H}, RMNC-DEPT135; 2D: H-H-COSY, H-HTOCSY, H-H-NOESY) and heteronuclear 2D (HMQC and HMBC), espectros de massas obtidos com ionização por pulverização eletrônica (ESIMS) e métodos químicos. ...
متن کاملRiverine barriers and the geographic distribution of Amazonian species.
Rivers have been suggested to have played an important role in shaping present-day patterns of ecological and genetic variation among Amazonian species and communities. Recent molecular studies have provided mixed support for the hypothesis that large lowland Amazonian rivers have functioned as significant impediments to gene flow among populations of neotropical species. To date, no study has ...
متن کاملDiterpenoids from Amazonian crude drug of Fabaceae.
A new cassane diterpene was isolated from Amazonian crude drug, "Acapu, " the wood of Vouacapoua americana, together with two known cassane furanoditerpenes, (+)-vouacapenic acid and (+)-methyl vouacapenate. The structure was characterized as cassa-13(14), 15-dien-19-oic acid on the basis of spectroscopic evidence.
متن کاملSeed Success of Pentaclethra Macroloba across Soil Types and Seed Densities
Seed dispersal and germination are critical to the fitness of all tree species. Moreover, among most trees the percentage of seeds that become seedlings, or “seedling success”, is very low. We examined seed success of a dominant lowland rainforest species, Pentaclethra macroloba, across a soil moisture gradient. Previous studies have established that P. macroloba has reduced seed germination ra...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Revista de Biología Tropical
سال: 2020
ISSN: 2215-2075,0034-7744
DOI: 10.15517/rbt.v69i1.43446