“
“Foliar epidermal characters often species from the genus Cassia L. Emend. Gaertner, Senna Miller and Chamaecrista Moench found in South Western Nigeria were studied. The. aim was to establish some useful diagnostic features that may be employed in combination with other characters as intra or inter-specific or generic tools for their delimitation. Our results revealed exciting features that are helpful in the www.selleckchem.com/products/hsp990-nvp-hsp990.html identification of each species. These include guard
cell area, stomatal index and frequency, presence or absence of trichomes, types of trichomes, as well as their length on epidermal surfaces and wall types. These results, therefore suggest diagnostic features that were found on the epidermal surface that can be employed to justify the separation of the new genera Senna and Chamaecrista from their initial genus Cassia.”
“In the present paper, the recent development of new silyl chemistry based photoinitiating systems for sunlight induced polymerization is presented. The inherent issues of the effects of a low light intensity and oxygen inhibition are discussed. Some selected examples leading to tack free coatings in free radical photopolymerization (FRP) and cationic photopolymerization (CP) are provided. The use of the silyl radical chemistry to overcome
the O(2) inhibition is presented. The sunlight induced polymerization might be a promising way for practical low cost and environmentally friendly curing processes. The use of renewable AZ 628 molecular weight epoxy monomers (such as epoxidized soybean oil (ESO), epoxidized linseed oil (ELO) or limonene dioxide (LDO)) in combination with a sunlight induced process also appears particularly worthwhile Selleckchem BIBF 1120 for green chemistry applications.”
“Recent studies show that the mutualistic role of lizards as pollinators and seed dispersers has been underestimated, with several ecological factors promoting such plant-animal interactions, especially on oceanic islands. Our aim is to provide a quantitative assessment of pollination and seed dispersal mutualisms
with lizards in continental xeric habitats. We carried out focal observations of natural populations of Melocactus ernestii (Cactaceae) in the Caatinga, a Brazilian semiarid ecosystem, in order to record the frequency of visits, kind of resource searched and behaviour of visiting animals towards flowers and/or fruits. We made a new record of the lizard Tropidurus semitaeniatus foraging on flowers and fruits of M.ernestii. During the search for nectar, T.semitaeniatus contacted the reproductive structures of the flowers and transported pollen attached to its snout. Nectar production started at 14:00h, with an average volume of 24.4l and an average concentration of solutes of 33%. Approximately 80% of the seeds of M.ernestii found in the faeces of T.semitaeniatus germinated under natural conditions. The roles of T.semitaeniatus as pollinator and seed disperser for M.