Results 41 to 50 of about 49,439 (316)
All orchids rely on mycorrhizal fungi for organic carbon, at least during early development. Orchid seed germination leads in fact to the formation of a protocorm, a heterotrophic postembryonic structure colonized by intracellular fungal coils, thought ...
A. Ghirardo+6 more
semanticscholar +1 more source
We all know that the original intent of the Convention on International Trade in Endangered Species was for the protection of animals. Adding flora was an afterthought that seemed like a good idea at the time. But it has gotten out of hand, and CITES regulation is now deeply entrenched worldwide caus- ing unnecessary expense, heartache and aggravation,
openaire +4 more sources
Untying the Gordian knot of plastid phylogenomic conflict: A case from ferns
Phylogenomic studies based on plastid genome have resolved recalcitrant relationships among various plants, yet the phylogeny of Dennstaedtiaceae at the level of family and genera remains unresolved due to conflicting plastid genes, limited molecular ...
Ting Wang+12 more
doaj +1 more source
The olfactory basis of orchid pollination by mosquitoes
Significance Nectar feeding by mosquitoes is important for survival and reproduction, and hence disease transmission. However, we know little about the sensory mechanisms that mediate mosquito attraction to sources of nectar, like those of flowers, or ...
Chloé Lahondère+6 more
semanticscholar +1 more source
Background Dendrobium catenatum/D. officinale (here after D. catenatum), a well-known economically important traditional medicinal herb, produces a variety of bioactive metabolites including polysaccharides, alkaloids, and flavonoids with excellent ...
Zhicai Wang+5 more
doaj +1 more source
While roots and leaves have evolved independently in lycophytes, ferns and seed plants, there is still confusion regarding the morphological evolution of ferns, especially in whisk ferns, which lack true leaves and roots and instead only exhibit leaf ...
Zengqiang Xia+5 more
doaj +1 more source
The Effects of Hydro-alcoholic Extracts of Allium sativum L. and Orchismaculata L. on Spermatogenesis Index and Testosterone Level in Cyclophosphamide-treated Rats [PDF]
Background:One of the most common side effects of cyclophosphamide (CP) is oligo-spermatozoa, azoospermia and elimination of spermatogenic cycles. This study was done to find the efficacy of simultaneous consumption of garlic (Allium sativum L.) and ...
Firouze Sadeghzadeh+6 more
doaj +1 more source
Orchid mycorrhizal fungi (OMF) are critical for seed germination and maintaining natural populations of orchids, yet the degree of specificity of most orchids to their mycorrhizal associates remains unknown.
Jonathan P. Kendon+6 more
semanticscholar +1 more source
I HAVE been struck by a most cogent remark of Mr. Wallace's in his review of Mr. Allen's “The Colour Sense” (NATURE, vol. xix. p. 501), viz., “But surely in orchids the perianth more highly specialised than in any existing flowers whatever; and if we take into account the world-wide distribution of these plants, their intense richness in genera and ...
openaire +3 more sources