Variation in plant sex ratios is often attributable to sex-specific mortality heterogeneous environments that differentially limit male and female reproduction. Yet sexual dimorphism plastic responses environmental heterogeneity are common may co-vary with variation ratios. Here, we show the ratio degree of for a number traits varied along climatic elevation gradients three wind-pollinated dioe...

OBJECTIVE To systematically review the existing evidence regarding the efficacy and safety of phytotherapeutic compounds used to treat men with symptomatic benign prostatic hyperplasia (BPH). DESIGN Randomized trials were identified searching MEDLINE (1966--1997), EMBASE, Phytodok, the Cochrane Library, bibliographies of identified trials and review articles, and contact with relevant authors...

Environmental niche modelling and associated species distribution models often ignore intraspecific ecological differentiation linked with ploidal differentiation, i.e. the occurrence of several cytotypes same species. Here we tested hypotheses that (i) tetraploid (4x) cytotype is characterized by a broader than diploid (2x), (ii) at regional scale can serve as proxy measure for smaller landsca...

Ursolic acid is a triterpenoid compound in the plant kingdom and has important biological functions. In this study, ursolic contents of nine herbs including Anethum graveolens (dill), Camellia sinensis L. (green tea), Lepidium sativum (garden cress), Ocimum basilicum (sweet basil), Petroselinum crispum (parsley), Rosmarinus officinalis (rosemary), Salvia (sage), Thymus vulgaris (thyme) Urtica d...