Search results for "Orchid"
showing 10 items of 40 documents
Influence of Culture Conditions on In Vitro Asymbiotic Germination of Anacamptis longicornu and Ophrys panormitana (Orchidaceae)
2021
This study is the first approach to in vitro asymbiotic germination of two species of Sicilian threatened terrestrial orchids, Anacamptis longicornu and Ophrys panormitana. Seeds were collected in the wild and cultured in two different media—Orchimax medium (OM) and Murashige and Skoog (MS)—and exposed to different photoperiods and temperatures to evaluate the best conditions for the specific stages of development. The germination of A. longicornu was very high on OM (95.5%) and lower on MS medium (21.4%), whereas O. panormitana germinated only on OM medium, with significantly lower percentages (12.0%), compared with A. longicornu. This difference is caused by variation in quality and quant…
Ernesta Foldāta publikāciju saraksts
1990
Latviešu orhideju pētnieka Ernesta Foldāta sastādīts saraksts ar paša publikācijām, 42 kā vienīgajam autoram un 10 kā līdzautoram. Drukāts mašīndrukā uz 4 lapām. Glabājas Latvijas Universitātes Muzeja Botānikas un mikoloģijas kolekciju krājumā.
Notas taxonómicas y distributivas sobre Serapias lingua subsp. tunetana (Orchidaceae), una rara espècie endémica de Túnez
2019
Serapias lingua subsp. tunetana, a rare endemic orchid confined to Tunis, northern of Tunisia, has been rediscovered far away from its type locality nearly after 22 years. Since its first finding in 1996 and its description published in 2005, the subspecies has not been found again, and was presumed to be extinct, or the taxon was erroneously identified. A detailed description of the subspecies justifying an amendment to its description, a map of its current distribution and colour photographs are also provided. The affinities to the related taxa within the S. lingua group occurring in Tunisia are here presented. The global IUCN status for this taxon is evaluated. Serapias lingua subsp. tun…
Ernesta Foldāta albums
1991
Latvijas Universitātes Muzeja Botānikas un mikoloģijas kolekciju krājumā atrodas ar latviešu orhideju pētnieku Ernestu Foldātu (1925-2003) saistīti materiāli. Viens no tiem ir Ernesta Foldāta sastādīts albums ar savu diplomu un sertifikātu (iegūtu Venecuēlā un Latvijā) kopijām, dažu paša atklātu orhideju sugu fotoattēliem un zīmējumiem.
Effects of defoliation on male and female reproductive traits of a perennial orchid, Dactylorhiza maculata
2000
1The effects of defoliation on male reproductive traits of plants have received little attention. We conducted two field experiments with Dactylorhiza maculata (L.) Soo to examine the effects of defoliation on both male and female reproductive traits. We removed 0, 50 or 100% of leaves prior to flowering. The quality of pollen was tested by transferring pollen from the differently treated plants to untreated plants of the same population. 2The non-defoliated plants did not differ from the defoliated plants in mass of pollinia. No differences were found in the weight of seed capsules or in the proportion of embryonic seeds raised by flowers receiving pollen from differently treated pollen do…
Reproductive success ofDactylorhiza incarnatassp.incarnata(Orchidaceae): the effects of population size and plant visibility
2007
Reproduction of plants pollinated solely by flower-visiting animals depends on the ability of the population and each of its flowering member to attract pollinators. Factors affecting the pollination of nectarless species differ somewhat from those affecting the pollination of rewarding species due to the avoidance behaviour of pollinators after visiting empty flowers. We studied a non-mimic food-deceptive orchid, Dactylorhiza incarnata ssp. incarnata, in 16 populations in central Finland to examine if population properties and plant size affected reproductive success of plants. We found that the number of flowering plants increased total pollinia removal and seed production of the populati…
Data from: Rumbling orchids: how to assess divergent evolution between chloroplast endosymbionts and the nuclear host
2015
Phylogenetic relationships inferred from multilocus organellar and nuclear DNA data are often difficult to resolve because of evolutionary conflicts among gene trees. However, conflicting or “outlier” associations (i.e., linked pairs of “operational terminal units” in two phylogenies) among these data sets often provide valuable information on evolutionary processes such as chloroplast capture following hybridization, incomplete lineage sorting, and horizontal gene transfer. Statistical tools that to date have been used in cophylogenetic studies only also have the potential to test for the degree of topological congruence between organellar and nuclear data sets and reliably detect outlier …
Predictors of testicular viability in testicular torsion
2007
Abstract Aim Testicular torsion (TT) requires prompt diagnosis and treatment to avoid testicular loss. Most studies have focused on the ideal work up to rule TT out in cases of acute scrotum. We attempted here to define objective criteria to select between orchidopexy and orchidectomy in patients undergoing surgery for TT. Patients and methods Fifteen boys with a median age at presentation of 7.8 (range 6.4–12) years undergoing surgical treatment for TT underwent color-Doppler ultrasound (CDU) preoperatively, and a bleeding test intraoperatively. Duration of preoperative history, degree of torsion, CDU findings and degree of bleeding were analyzed. Results Salvageability was independent of …
In memorium Ernests Foldāts (1925.g.15.maijs-2003.g.15.janvāris)
2003
Latviešu biologa Riharda Kondratoviča sarakstīts latviešu orhideju pētnieka Ernesta Foldāta nekrologs. Rakstīts par Foldāta dzīves gājumu, iegūto izglītību, zinātniskajiem sasniegumiem, akadēmiskajiem amatiem, atklātajām orhideju sugām, iegūtajiem apbalvojumiem, sakariem ar Latviju. Drukāts uz 2 lapām, apakšā Riharda Kondratoviča paraksts. Glabājas Latvijas Universitātes Muzeja Botānikas un mikoloģijas kolekciju krājumā.
Origami orhideju modeļu locīšana
2020
Attālināta nodarbība "Orhideju dzimta, orhideju pētnieks Ernests Foldāts, origami orhideju modeļu locīšana", kurā stāstīts par orhideju dzimtu, tās raksturojumu, Latvijā savvaļā sastopāmajām šīs dzimtas sugām, par orhideju pētnieku Ernestu Foldātu (1925-2003), kā arī piedāvātas 3 dažādu sarežģītības pakāpju orhideju origami modeļu locīšanas video instrukcijas.