نتایج جستجو برای: nauclea latifolia
تعداد نتایج: 1415 فیلتر نتایج به سال:
Hydraulically connected wetland microcosms vegetated with either Typha latifolia or Myriophyllum aquaticum were amended with an NH4NO3 and permethrin mixture to assess the effectiveness of both plant species in mitigating effects of the pollutant mixture on phytoplankton (as chlorophyll a) and Hyalella azteca. Phytoplankton grew in response to increased NH4NO3 in the presence of all plant speci...
A total of 34 floral visitors of Lavandula latifolia (Labiatae) at a southern Spanish locality were examined from the perspective of their "quality" as pollinators. I considered frequency of pollen transfer, number of pollen grains deposited on the stigma, selection of floral sexual stage (flowers are markedly protandrous), and patterns of flight distance between flowers. Hymenoptera deposited ...
Intra-specific variability of root biomass production (RP) of six rooted macrophytes, i.e. Juncus effusus, Phragmites australis, Schoenoplectus lacustris, Typha latifolia, Phalaris arundinacea, and Iris pseudacorus grown from clones, in response to Cu exposure was investigated. Root biomass production varied widely for all these macrophytes in control conditions (0.08 μM) according to the sampl...
The evolution of dioecy from hermaphroditism allows for avoidance self-pollination, and its evolutionary background has been investigated both experimentally theoretically since it was first proposed by Darwin. To reproduce this evolution, we screened hermaphroditic mutants Silene latifolia using heavy-ion beam or γ-ray irradiation characterized the phenotypes their floral organs. Our scatterpl...
The subfamily Bambusoideae comprises three monophyletic tribes, Arundinarieae, Bambuseae and Olyreae. Here we report the gametic number chromosomal meiotic behavior of two species belonging to herbaceous tribe Olyreae, Olyra latifolia humilis. Accessions were collected in Misiones, at Northeastern Argentina. We a new for O. humilis, n=18, confirmed n=11 latifolia. Chromosomal features, like bas...
Phytochemical investigation on the bark of Nauclea officinalis led to isolation a new monoterpenoid indole alkaloid, nauclediol. The structure compound was identified through extensive spectroscopic analysis. Nauclediol displayed cholinesterase-inhibitory activities towards AChE and BChE with IC50 values 15.429 8.756 µM, respectively. Statistical analysis revealed that mode inhibition naucledio...
INT~ODUCTION ................................................................... Hypothesis of heterogametism ..................................................... Equivalence, within strain C, of pollen of Oenothera pratincola f. typica and mut. latifolia. . The Fa and F, generations of the cross mut. formosa from strain E X mut. latifolia from strainc ............................................
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