Request pdf radial growth of the saharas oldest trees. Breeding value and variance component estimation from data. The chemical composition of essential oils obtained by hydrodistillation of leaves, wood and cones of cupressus dupreziana cupressaceae was analyzed by gc and gcms. The present report is a part of our study on the reproductive biology of a traditional indian medicinal plant, commiphora wightiia source of guggul steroids. Pdf unreduced diploid nuclei in cupressus dupreziana a. Read article for free, from open access legal sources, via unpaywall. The most thorough morphological treatment of the western hemisphere species of cupressus is the revision of wolf 1948, who only included the new world species in his study on the grounds that the eurasian. The italian cypress or cupressus sempervirens stricta is a vigorous, evergreen, coniferous tree with a dense, thin, fastigiate almost pencillike habit, sometimes becoming broader with age. Unreduced diploid nuclei in cupressus dupreziana a. Terpenoid analysis were carried out on 160 trees of 12 natural populations with a view to determining the intraspecific. Camus, a highly endangered mediterranean conifer, were assessed by cytomorphological observations and flow cytometric analyses and then compared to c. The board of trustees of the royal botanic gardens, kew.
Paternal apomixis was recently reported in the endangered mediterranean cypress, cupressus dupreziana. Camus, a highly endangered mediterranean conifer, were. Cypress surrogate mother produces haploid progeny from. This cultivar has dark green, scalelike stem clasping leaves that are quite aromatic. The record derives from wcsp data supplied on 20120323 which reports it as an accepted name record 383095 with original publication details. The highly endangered mediterranean conifer, cupressus dupreziana a. Cupressus cashmeriana wikimili, the free encyclopedia.
Browse pictures and read growth cultivation information about saharan cypress, moroccan cypress, tarout cupressus dupreziana supplied by member gardeners in the plantfiles database at daves ga. Constituents from fruits of cupressus sempervirens. Cupressus dupreziana, the saharan cypress, or tarout, is a very rare coniferous tree native to the tassili najjer mountains in the central sahara desert, southeast algeria, where it forms a unique population of trees hundreds of kilometres from any other trees. Pdf the endangered saharan cypress cupressus dupreziana. Camus pollen size and dna content of pollen of cupressus dupreziana a. Cupressus dupreziana, threatened conifer of the sahara philip stewart, m. Browse pictures and read growth cultivation information about saharan cypress, moroccan cypress, tarout cupressus dupreziana supplied by member gardeners in. Numbers along branches are posterior probabilities. A unique case of paternal apomixis in plants has been recently reported in cupressus dupreziana, an endangered mediterranean conifer. These two cypresses could between them conserve much of the genetic material of the original population, making possible an interesting. Sep 01, 2000 size and dna content of pollen of cupressus dupreziana a.
See also androgenesis and androclinesis described below, a type of male apomixis that occurs in a conifer, cupressus dupreziana. Materials and methods plant material the male cones used in this investigation were collected from an adult, ex situ growing cupressus dupreziana a. Here we show how the diploid pollen of the mediterranean cypress tree cupressus dupreziana naturally produces an embryo without. Cupressus atlantica cupressus dupreziana cupressus sempervirens juniperus occidentalis juniperus osteosperma juniperus grandis hesperocyparis sensu stricto 14. Cupressaceae is a conifer family, the cypress family, with worldwide distribution. Based on genetic and morphological analysis, the genus cupressus is found in the subfamily cupressoideae. Lack of mother tree alleles in zymograms of cupressus dupreziana a. Cupressus dupreziana, the saharan cypress, or tarout, is a very rare coniferous tree native to. Although most living organisms reproduce sexually, some have developed a uniparental reproduction where the embryo usually derives from the female parent. Around 35% of the grains exhibited a size similar to c. Cupressus is one of several genera of evergreen conifers within the family cupressaceae that have the common name cypress.
Pdf unexpected ploidy levels observed in a previous flow cytometric analysis of cupressus dupreziana endosperm, led us to. There are only 233 specimens of this critically endangered species, the largest about 22 m tall. Cypress surrogate mother produces haploid progeny from alien. Microsporogenesis in the endangered species cupressus. Cupressus dupreziana wikispecies, free species directory. Cupressus dupreziana, threatened conifer of the sahara. One consists of the single species cupressus dupreziana, the saharan cypress pichot et al. Forest 40 moroccan cypress, tarout national arboretum. Files are available under licenses specified on their description page. They are monoecious, subdioecious or rarely dioecious trees and shrubs up to 116 m 381 ft tall.
Chorological and conservation status of the endemic. A molecular biogeography of the new world cypresses. When gynogenetic reproduction is applied to fully inbred individuals, homozygous clone lines are produced. Monoterpenes constitute the main chemical groups in the oils from the three organs. The common name comes from old french cipres and that from latin.
A mixed model method was developed for breeding value and variance component estimation in gynogenetic families. Lavauden during his journey over the tassile range in the sahara between rhat and djanet early in 1925 dallimore et al. Cupressus dupreziana, the saharan cypress, is a very rare coniferous tree native to the tassili najjer mountains in the central sahara desert, southeast algeria, where it forms a unique population of trees hundreds of kilometres from any other trees. This page was last edited on 7 novemberat this article is about plants. Plants profile for cupressus sempervirens dupreziana.
Cupressus dupreziana, represented today by not more than 200 adult trees in the central sahara, is perhaps a local adaptation of a population that until recently was continuous, and whose other living representative would be c. Molecular evidence for the natural production of homozygous. Watson2 introduction with its narrow columnar habit of growth, this evergreen forms tall, dark green columns 40 to 60 feet in height in the western united states but are often much shorter fig. Cones may persist on the tree for several years because, as with many other cupressus species, c. Tsenden is a species of cypress native to the eastern himalaya in bhutan and adjacent areas of arunachal pradesh in northeastern india. Cupressus definition of cupressus by the free dictionary. Under gynogenetic reproduction, offspring receive genes only from their dams and completely homozygous offspring are produced within one generation. Species within the genus cupressus are trees rarely shrubs evergreen, and monoecious. Cupressus cashmeriana bhutan cypress, kashmir cypress, weeping cypress. Terpenoid analysis were carried out on 160 trees of 12 natural populations with a. The bark of mature trees is commonly orange to red brown. This conservation project aims at planting groves of endangered species of cupressus, namely cupressus stephensonii, cupressus atlantica and cupressus dupreziana.
It was combined by silba 1981 at the varietal level c. Request pdf unreduced diploid nuclei in cupressus dupreziana a. Cupressus was a hot topic in conifer systematics during the first decade of the 21st century, with various proposals to subdivide it into multiple genera. This species produces unreduced pollen that develop into. The aborted fetus has a typical leukoencephalomalacia. Jun 27, 2019 agamospermy occurs mainly in two forms. Collections were made weekly from september 1998 to january 1999.
This page was last edited on 10 november 2017, at 10. Biomedicinal and chemical profile of cupressus sempervirens. Handpollination experiments and embryological studies have confirmed the occurrence of nonpseudogamous apomixis, nucellar polyembryony and autonomous endosperm formation for the first time in this plant, which is presently threatened by overexploitation. Cupressus dupreziana saharan cypress, tarout mountain states. Cupressus dupreziana landscape plants oregon state university. Camus or tassili cypress, is to our knowledge the first plant species where in planta paternal apomixis i. Though the authors concluded that it seems appropriate to place xanthocyparis vietnamensis and x.
Cypress surrogate mother produces haploid progeny from alien pollen. Pdf lack of mother tree alleles in zymograms of cupressus. Camus is an accepted name this name is the accepted name of a species in the genus cupressus family cupressaceae. The cypress cupressus dupreziana is native to the inhospitable tassili najjer desert of algeria and is one of the worlds most endangered trees, with only 231 remaining. The cypress cupressus dupreziana is native to the inhospitable tassili najjer desert of algeria and is one of the worlds most endangered. Every page goes through several hundred of perfecting techniques. Cupressus dupreziana in habitat, in the sahara desert inaturalist observation 7367127 andras zboray, 2011. Cupressus have male reproductive cones with 8 to 20 opposite decussate scales. The family cupressaceae includes 30 genera and 3 species of conifers distributed especially in the northern hemisphere, more scattered in south temperate regions stevens, 2012. Cupressus dupreziana has a very unique reproduction strategy, it does not involve the usual combining of male and female sex cells. This species acts as a surrogate mother for the development of allpaternal embryos from.
Camus cupressus dupreziana, the saharan cypress, is a very rare coniferous tree native to the tassili najjer mountains in the central sahara desert, southeast algeria, where it forms a unique population of trees hundreds of kilometres from any other trees. Cupressus dupreziana landscape plants oregon state. The current stateoftheart creates a sound basis for the preservation of unique species cupressus dupreziana provided that targeted effort and care is devoted to the accomplishment of multiplication protocols. The drug was used externally for head colds, coughs and bronchitis77. The family includes 2730 genera 17 monotypic, which include the junipers and redwoods, with about 140 species in total. Cupressus dupreziana in world checklist of selected plant families. Aug 26, 2009 paternal apomixis was recently reported in the endangered mediterranean cypress, cupressus dupreziana. The species was described based on fragmentary material collected by m. Then the rank was changed by the same author silba 1998 to a variety of c. The radial growth of duprez cypress cupressus dupreziana a. Cupressus dupreziana variety dupreziana other common names. Cupressus gigartea, the big tree at bajie daniel winkler 2007. Xiang and li 2005 reexamined xanthocyparis, chamaecyparis, cupressus and juniperus using nrdnaits sequences. Camus which is endemic to the algerian tassili najjer desert.
All structured data from the file and property namespaces is available under the creative commons cc0 license. Foliar sesquiterpene variations in natural populations of. At least 25 taxa have been identified and described, which. These microsporophylls bear 2 to 10 microsporangia. Size and dna content of pollen of cupressus dupreziana a. Seed lots were collected from 6 openpollinated in situ c. I will not belabor the history of this controversy, but will summarize it as follows. The endangered saharan cypress cupressus dupreziana. Saharan cypress, moroccan cypress, tarout cupressus dupreziana. Media in category cupressus dupreziana the following 2 files are in this category, out of 2 total.