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GINKGO BILOBA L. 1771.

Dobro došli!

Već samo jedna biljka u kući prirodna je i priručna apoteka!

• Za sve informacije u vezi uzgoja ginka (nabave i uzgoja sadnica, sadnje...) nazovite 098 1365 893 ili se javite na e-mail:
ginkgo.begovic@gmail.com
Dolje: poznati dokumentarac o ginku u produkciji ZDF-a i mikroskopski filmski prikaz pokretnog spermija i oplodnja.

Poznati dokumentarac iz produkcije ZDF-a o ginku.

Fantastično - pokretni spermiji ginka pod mikroskopom

Eliksir života - Ginkgo biloba (Prirodno liječenje ginkom), Pitomača-Hrvatska 2014.

petak, 6. travnja 2012.

Ginkgo biloba

Ginkov list iz herbarija spremljen u ljetu i jesen.



3 godine stara biljka ginka! Foto: B. M. Begović Bego

POTPUNO NOVA INFORMACIJA

(New)

Ukratko: nove informacije o fosilima ginka - jedan fosil ginkovog pretka pronađen u Sjevernoj Dakoti dobio je ime (Ginkgo cranii) po do nedavnom direktoru Kew Gardensa - Kraljevskog Bot. vrta u Londonu - UK (Royal Botanic Gardens), Siru Dr. Peteru Crane - koji je trenutno na Yale School of Forestry and Environmental Studies at Yale University in New Haven, Connecticut, USA.
(U stvari se radi o varijanti fosila direktnog evolucijskog pretka vrste Ginkgo biloba, Ginkgo adiantoides (starost do oko 55 mil. godina), a od koje je starija u evolucijskom slijedu vrsta Ginkgo apodes koju je pronašao i deskripirao dr. Z-Y. Zhou 2003. godine, Nanjing, Kina).
Sretan sam što sam sudjelovao na direktan način prilikom rekonstrukcije (itd.) ove nove vrste u tijeku 2010/2011. godine.

Autori ovog članka su

Abstract:
Tertiary Ginkgo ovulate organs with associated leaves from North Dakota, USA and its evolutionary significance.
The evolutionary history of Ginkgo, a living fossil once flourished in the geological time, has been better understood for the Mesozoic Era, but was still elusive in the Tertiary because of the rarity of reproductive organs. We here describe a new species, Ginkgo cranii sp. nov., based on studies using SEM and LM on well-preserved ovulate organs and associated leaves from the Upper Paleocene Sentinel Butte Formation of North Dakota, USA. The ovulate organ is of the modern type and pedicel-absent, with two ovules seated in separate collars directly attached to the peduncle, but only one of them is matured. The fully developed ovules are platyspermic, 12-14 mm long by 11-14 mm wide and about 10-12 mm thick. Stomata with deeply-sunken guard cells and slightly-raised subsidiary cells are sparsely distributed among epidermal cells which are characterized by dome-like, strongly bulging periclinal walls and developed anticlinal wall flanges in integument and collar cuticles. The pollen grain adhered to the cuticle is fusiform with a narrow medium colpus and finely granulate exine. The associated leaves are generally similar to the ovulate organ in cuticular structure, especially in having epidermal cells with more or less bulging periclinal walls and developed periclinal wall flanges. Ginkgo cranii is the only Tertiary species of the genus described so far, of which the ovulate organs are known. The study further corroborates the hypothesis that modern Ginkgo was evolved from its ancestors by reduction, and is helpful to classify Cenozoic ginkgos in a natural system.

(Više vidi - link: see more click here - klikni ovdje)


Ginkgo adiantoides - new var. fos. G. adian. - Ginkgo cranii (North Dakota, USA), recon. - Dr. Z. Zhou (China) & B.M. Begovic Bego (Croatia), 2011.

1 - Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sci, Nanjing, 210008 , China
2 - East Tennessee State University, Department Of Biology, PO Box 70703, Johnson City, TN, 37614-1710, USA
Keywords:
cuticular structure
Ginkgo cranii
North Dakota
ovulate organs
Paleocene
reduced evolutionary trends
Sentinel Butte Formation.
Presentation Type: Poster:Posters for Sections
Session: P
Location: Khorassan Ballroom/Chase Park Plaza
Date: Monday, July 11th, 2011
Time: 5:30 PM
Number: PPB003
Abstract ID:155

Za sada smijemo objaviti samo toliko!!!! Source (vidi izvor): Botanical Society of America.

Još jedan odličan članak o evoluciji ginka: 
Thilo C Fischer, Barbara Meller, Evelyn Kustatscher and Rainer Butzmann:

Permian ginkgophyte fossils from the Dolomites resemble extant O-ha-tsuki aberrant leaf-like fructifications of Ginkgo biloba L