acta societatis botanicorum poloniae - LV Zjazd Polskiego ...

More documents

Recommendations

Info

55th Meeting of the Polish Botanical Society, Warsaw 2010 MOrPHOGENESIS AT THE SHOOT APEx OF huPerziA BErNH. Gola Edyta M. University of Wrocław, Institute of Plantt Biology, 6/8 Kanonia St., 50-328 Wrocław, Poland, edytag@biol. uni.wroc.pl The Huperzia Bernh. genus belongs to Lycophyta, the sister clade to other vascular plants. Because of the phylogenetic position, different aspects of lycopod development are intensively studied. Presented results show the structure of the shoot apical meristem (SAM) and organogenic processes at the Huperzia apex. The SAM in Huperzia is relatively flat, covered by the microphyll primordia and by periodically initiated gemmae (bulbils). At the meristem surface a group of usually four initial cells is present, that are transient and can be replaced in ontogeny of a given apex. The central part of the meristem is occupied by the procambium which reaches to the subsuperficial layers of the meristem. Microphyll and gemmae primordia, the latter being a little bigger than the former ones, are exogenously initiated in the peripheral zone of the SAM due to the periclinal divisions of the superficial cells. Procambium of the microphyll and gemmae traces is formed simultaneously in the basal part of primordium and in the shoot stele. The primordia are regularly arranged at the apex according to the phyllotactic pattern regardless of the primordium identity. Stalked sporangia are formed in the proximal part of the meristem, adaxially to the microphylls. They are initiated by the periclinal divisions of the protoderm. POPULATION rESOUrCES ANd HABITAT PrEFEr- ENCES OF oPhioGlossum vulGAtum L. AT A LO- CALIty NEAR RACIążEK IN tHE KUJAWy REGIoN Łazowy-Szczepanowska Iwona 1 , Załuski tomasz 2 . 1,2 Nicolaus Copernicus University, Department of Biology and Pharmaceutical Botany, Ludwik Rydygier Collegium Medicum in Bydgoszcz, 9 M. Skłodowskiej-Curie St., 85-094 Bydgoszcz, Poland; 1 i.lazowy@cm.umk.pl; 2 tzaluski@cm.umk.pl A new locality of Ophioglossum vulgatum L. in the Kujawy region was characterised in a complex of a partially exploited and spontaneously overgrown fen surrounded by fields, near Raciążek. Exceptionally large population resources of the species as well as its local preferences for forest and shrub phytocoenoses were shown. Ophioglossum vulgatum L. was growing abundantly on 20 ares, its abundance was estimated at 140 thousand individuals (above-ground shoots) in total. In some places the number of individuals per 1 m2 exceeded 500. The species prefers mainly younger developmental stadia of Fraxino-Alnetum with dominance of Alnus glutinosa in a tree stand. It also grows numerously in Salicetum pentandro-cinereae and less often – in Thelypterido-Betuletum pubescentis, Molinio-Franguletum and in non-forest community with transitional features between Scheuchzerio-Caricetea nigrae and Molinion. EFFICIENCY OF TWO CrYOPrESErVATION TECH- NIqUES IN THE CONSErVATION OF FErN GAMETO- PHYTES Makowski damian1 , Mikuła Anna2 , Rybczyński Jan J. 3 1–3Polish Academy of Sciences, Botanical Garden – Center for Biological Diversity Conservation, 2 Prawdziwka St., 02-973 Warsaw, Poland; 1damian1718@poczta.onet.pl; 2mikula@obpan.pl; 3jjryb@obpan.pl Cryopreservation is actually recognised as one of the safest methods for the long-term preservation of diverse plant material. Experiments were carried out on the following fern gametophyte in vitro cultures: Osmunda regalis, Asplenium adiantumnigrum, Asplenium cuneifolium, Dicksonia fibrosa. In order to compare the efficiency of the conservation of the gametophytes 116 viability, two encapsulation procedures were examined: an encapsulation-dehydration and an encapsulation-vitrification. The first one relied on: 2-weeks of preculture (0,25 M sucrose and 0,01 ml ABA), 72 h of sucrose solution treatment ( 0,5 M; 0,75 M; 1 M) and 5 h air desiccation and freezing in liquid nitrogen. In the second technique the encapsulated gametophytes were treated with the PVS3 vitrification solution for 0,5 h; 1 h; 2 h; 3 h and frozen in liquid nitrogen. The experiments which we carried out demonstrated that both cryopreservation techniques are effective and can be applied in cryostorage the fern gametophytes. INITIATION ANd dEVELOPMENT OF THE MICrO- PHYLLOUS LEAF IN SPIKEMOSS selAGinellA SP. Punda Anna. University of Wrocław, Institute of Plant Biology, 6/8 Kanonia St., 50-328 Wrocław, Poland, anna-punda@wp.pl Microphyllous leaves, characteristic of the lycophytes, evolved in a different way than macrophyllous leaves of other vascular plants. It is possible that the development of microphylls differs from that of macrophylls. An analysis of the initiation of the microphyllous leaf in two Selaginella species, S. martensii Spring and S. kraussiana (Kunze) A. Brown, showed that the sequence of developmental events resulting in the emergence of a microphyllous leaf primordium is specific and recurrent. The primordium initiation becomes visible due to elongation in the anticlinal direction of one of the superficial prismatic cells in the peripheral zone. Subsequently, this cell undergoes an unequal formative division giving rise to a leaf apical cell (LAC). The LAC divides regularly, cutting segments off alternately to the adaxial and abaxial sites. As a result, the lateral organ primordium emerges, and grows axially. Due to gained ability to divide periclinally, the number of cell layers increases at the base of the emerging primordium (leaf thickening), and then, the procambium is initiated. In the next stages of the spikemoss leaf morphogenesis, a microphyll trace differentiates and connects to the shoot stele, leaf tissues maturate and ultimately the leaf becomes fully developed. In spite of the different phylogenetic origin of the microphyllous leaf, its morphogenesis resembles that of the macrophyllous leaf in ferns. AzollA filiculoides (AZOLLACEAE) IN POLANd – dISTrIBUTION, BIOLOGY ANd ECOLOGY Szczęśniak Ewa. University of Wrocław, Institute of Plant Biology, 6/8 Kanonia St., 50-358 Wrocław, Poland; ewaszcz@biol. uni.wroc.pl The monogeneric family Azollaceae consists of floating, not drought-tolerant ferns, found throughout the tropical and temperate zones. Azolla species are one of the smallest ferns occurring on Earth. Their relationship with Anabaena azollae is the only known mutualistic symbiosis between a pteridophyte and a diazotrophic prokaryote. A. filiculoides is the most frost-tolerant species, up to 2.5– 4 cm long, floating on the water surface in mats up to 20cm thick. It was introduced in Europe towards the end of the 19th century. A. filiculoides was classified as an ephemeral plant in Poland up to the end of the 20th century. In the last 15 years it appeared in 6 locations in south-west Poland. Two stands became destroyed, though four other populations still exist. Azolla filiculoides occurs in eutrophic or even polluted water of old river beds or anthropogenic ponds where it forms a dense mat up to 10cm thick. It stays sterile and propagates only in a vegetative manner. Frost resistance of Polish populations is higher than reported so far; fern may winter and rebuild the population after frost reaching -22 degree in Celsius scale. The size of a population is changeable during the vegetation season. In summer and autumn A. filiculoides substitutes native floating communities of Spirodela and Lemna. Szczęśniak E., Błachuta J., Krukowski M., Picińska-Fałtynowicz J. 2009. Dis-
tribution of Azolla filiculoides Lam. (Azollaceae) in Poland. Acta Soc. Bot. Pol. 78 (3): 241– 246 Weber E. 2005. Invasive Plant Species of the World. CABI Publishing. 548 pp. dIVErSITY OF FErNS FrOM THE dryoPteris Affinis COMPLEx IN CENTrAL POLANd Woziwoda Beata1 , Podsiedlik Marek2 . University of Łódź, Banacha 12/16, 90-237 Łódź, Poland; 1Department of Geobotany and Plant Ecology, woziwoda@biol.uni.lodz.pl; 2Student of Department of Nature Protection, adeno2@op.pl The work presents the morphological and ecological diversity of specimens from Scaly Male-fern group, Dryopteris affinis aggregate, which grow in 16 isolated localities in the lowland part of Poland. This fern forms very small populations – usually only 1 or 2 individuals are noted on the locality. The 17 characteristics are described and compared. Studied individuals represent two species: Dryopteris borreri (Newman) Newman ex Oberh. et Tavel and Dryopteris cambrensis (Fraser-Jenkins) Beitel et W.R. Buck (which means that D. affinis ss. has not been found on this area so far). The Scaly Male-ferns grow mainly in young forests, in unstable secondary communities with Scotch pine Pinus sylvestris (most of them are recent forests growing on arable abandoned fields), on oligotrophic and acid soils. A few localities are connected with anthropogenic monocultures of Betula pendula, Abies alba or Populus tremula as well as with hedgerows from the Rhamno-Prunetea class. These ferns are sporadically noted in oak-hornbeam forest (Tilio-Carpinetum) and riparian forest (Fraxino-Alnetum), on mezo- and eutrophic habitats. Pteridology EPIPHYTIC ANd TrEE FErNS OF qUEENSLANd STATE, AUSTrALIA Zenkteler Elżbieta. Adam Mickiewicz University, Institute of Experimental Biology, Department of General Botany, 89 Umultowska St., 61-614 Poznań, Poland, elzbieta.zenkteler@ amu.edu.pl Situated at the border between Queensland and New South Wales is the city of Brisbane with its three Botanical Gardens and the adjacent National Reserves in which the fern photographs shown in this lecture were taken. Within that area the tropical climate collides with the steppe climate of the Southern Hemisphere. This creates favorable conditions for the development of a rich pteridoflora in which species from both climatic zones are represented. In tropical broadleaf evergreen forests one encounters Antarctic species from genera Dicksonia and Cyathea growing in the vicinity of giant methuselahs of Nothofagus moorei, some about one thousand years old. The crown level is dominated by numerous epiphytic ferns, such as Asplenium australasicum, A. polyodon, Dictymia brownii, Vittaria and lush specimens of Platycerium. The rich forest floor is populated by large patches of terrestrial species from genera Davalia, Pellaea and Adiantum (sylvaticum, hispidulum, formosum, atroviride) growing together with mosses, liverworts, horsetails and club mosses. Fissures in the rocky cliffs of a volcanic crater in Springbrooke National Park are overgrown by filmy ferns Hymenophyllum australe and H. marginalis. This extraordinary species richness and the sometimes surprising combinations (occurrence of epiphytic ferns on tree ferns) form a very interesting panorama of the Australian pteridoflora.
Page 1 and 2:
ACTA SOCIETATIS BOTANICORUM POLONIA
Page 3 and 4:
55th MEETING OF THE POLISH BOTANICA
Page 5:
ACTA SOCIETATIS BOTANICORUM POLONIA
Page 9 and 10:
Plenary session
Page 11 and 12:
TENSOr ASPECTS OF THE PLANT OrGAN G
Page 13 and 14:
of the above are called neurotransm
Page 15 and 16:
Aerobiology
Page 17:
SPOrES OF THE GENUS AlternAriA - TH
Page 20 and 21:
55th Meeting of the Polish Botanica
Page 23 and 24:
Bryology
Page 25:
BrYOPHYTE OF CUTOVEr PEATLANd IN SE
Page 28 and 29:
55th Meeting of the Polish Botanica
Page 31 and 32:
Geobotany and Plant Cover Conservat
Page 33 and 34:
COSTS OF rEPrOdUCTION IN A PErENNIA
Page 35 and 36:
a comparison of three measurements
Page 37 and 38:
has a primary character. Its specia
Page 39 and 40:
tral Poland has a relatively high c
Page 41 and 42:
River oxbow, near Goniądz. In 2007
Page 43 and 44:
ECOLOGICAL INTErPrETATION OF CUrrEN
Page 45 and 46:
THE rOLE OF BIrdS IN LONG-dISTANCE
Page 47 and 48:
east heights of specimens which gro
Page 49 and 50:
dIVErSITY OF rIPArIAN TALL HErB FrI
Page 51 and 52:
COLONIZATION OF rECENT BLACK ALdEr
Page 53 and 54:
species of the class Trifolio-Geran
Page 55 and 56:
of species quantity from different
Page 57 and 58:
GENETIC dIVErSITY VErSUS MOrPHOLOGI
Page 59 and 60:
PLANT COVEr OF SEGMENTS OF THE BYdG
Page 61 and 62:
forest communities, which took plac
Page 63 and 64:
History of Botany
Page 65 and 66: Lichenology
Page 67 and 68: in vitro CULTUrING OF THE MYCOBIONT
Page 69: undescribed species outside of Euro
Page 72 and 73: 55th Meeting of the Polish Botanica
Page 107 and 108: Plant Tissue Cultures
Page 109 and 110: one week intervals for 9 weeks. 3)
Page 111 and 112: taxon. This plant contains secondar
Page 113 and 114: sor. Cultures were maintained in Mu
Page 115: Pteridology
Page 124: 55th Meeting of the Polish Botanica
show all

acta societatis botanicorum poloniae - LV Zjazd Polskiego ...

Create successful ePaper yourself

Delete template?

Save as template?