KuaS
Schumannia
Schumannia 1 (vergriffen)
Schumannia 2
Schumannia 3
Schumannia 4
Schumannia 5
Kalender
Sonderpublikationsreihe der DKG
sonstige Publikationen der DKG
Schnelleinstieg
Aktuelle KuaS
Juli 2010
61. Jahrgang
Titelbild:
Euphorbia phosphorea
Foto: Detlev Metzing
Neuste Beiträge
Druckansicht: Deutsche Kakteen-Gesellschaft e.V.
Seite: Schumannia 2
Datum: 30.07.2010
Link: http://www./cms/cs/index.pl?navid=sonstige_Publikationen_der_DKG_1027
Seite: Schumannia 2
Datum: 30.07.2010
Link: http://www./cms/cs/index.pl?navid=sonstige_Publikationen_der_DKG_1027
Aus dem Inhalt (contents):
I. Breuer: Die Gattung Haworthia im Überblick - Verbreitung der Gattung Haworthia - Klassifikation und Taxonomie der Gattung Haworthia - Chromosomenzahlen der Gattung Haworthia - Geschichte und Klassifikation der Gattung Haworthia seit 1809 - Zur Kultur der Haworthien. AbstractK. Zimmer: Zur Keimung von Kakteensaatgut - Optimale Keimtemperaturen - Nachreife und Alterung - Keimung einiger Ferocacteen - Lichtersatz durch Gibberellinsäure. Abstract
K. Gilmer & H. P. Thomas: Die Gattung Tephrocactus Lemaire s. str. - Taxonomie, Ökologie und Kultur / The genus Tephrocactus - taxonomy, ecology and cultivation. - Einleitung - Gattungsbeschreibung - Standortbedingungen - Verbreitung - Taxonomie - Die Arten der Gattung Tephrocactus - Kultur (Text in Deutsch und Englisch). Abstract
Ein Sonderheft der DKG, SKG und GÖK.
Herausgegeben von Detlev Metzing & Joachim Thiede
141 S., Format 17 x 24 cm, 100 Farbbilder, zahlreiche Zeichnungen und Verbreitungskarten.
ISBN 3-89598-585-6 / ISSN 1437-2517
1998
Preis: 20,- EURO (zzgl. Porto)
Abstracts from Schumannia 2
Abstract: Breuer, I.: Die Gattung Haworthia im Überblick. [A survey of the genus Haworthia.] - Schumannia 2: 3-74. 1998.
The taxonomy and nomenclature of the genus Haworthia (Asphodelaceae) is outlined, the currently accepted classification is presented by a list of accepted taxa with full references to their source and type data. Distribution maps are presented for all species. A compilation of already published chromosome numbers is given. Requirements for successful cultivation of the plants are described.Abstract: Zimmer, K.: Zur Keimung von Kakteensaatgut. [Germination of cactus seeds.] - Schumannia 2: 75-84. 1998.
Sowing experiments has shown distinct germination behaviour of cactus seeds from different species. The optimal germination temperature of the selected species is varying between 15 and 35oC. For practical purposes in cultivation a temperature of 20-25oC is recommended, a lower temperature (20-18oC) should be applied only to few species, which are adapted to less high temperatures. The germination capacity is dependent from the time between harvesting and sowing, the temperature has an influence, too. After-ripening of the seeds could be verified for several species, whereas in other species the germination rate decreases after some years. Germination of Maihuenia is encouraged by storing the seeds under cold and moist conditions. In Ferocactus, where most species are adapted to high germination temperature, an increase of germination rate by after-ripening was proven for several species, although this may be less high for particular species. Germination of seeds in darkness is affected by treatment of gibberellins, where in most cases a higher germination rate was achieved.Abstract: Gilmer, K. & Thomas, H.-P.: Die Gattung Tephrocactus Lemaire s. str. - Taxonomie, Ökologie und Kultur. [The genus Tephrocactus - taxonomy, ecology and cultivation.] - Schumannia 2: 85-141. 1998.
The authors give a survey about the genus Tephrocactus (Cactaceae). The taxonomy of the genus is outlined and a key for identification of the five accepted species is presented. The habitats of the species are characterized and the distribution areas are illustrated. Guidelines for successful cultivation of Tephrocactus species are given, too.[The full text of this paper is printed bilingual, German and English]
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