Le cypres de l'atlas - ressources genetiques
Source
Annales de la Recherché Foresriere au Maroc
Issue
Vol. 1997, Issue 8-10 (31 Dec. 1997), pp.144-154, 11 p.
Publisher
Centre de Recherche Forestière
Publication Date
1997-12-31
Country of Publication
Morocco
No. of Pages
11
Main Subjects
Earth Sciences, Water and Environment
Abstract EN
Cupressus atlantica Gauss, is an endemic species from the Moroccan Atlas, particularly well adapted to semi-arid conditions w ith large range of temperature.
C.
atlantica has a high plasticity, a good vigour and produces good quality wood, This species offers an important potential for soil and environment prevention and local economic development.
Today, its natural area is limited to few thousands of ha.
Natural stands are most often small places with mutilated trees.
.Among the 18 stands that were described by Destremau in 1974.
the "Aghbar" site is the only large forest.
Grazing pressure highly reduces possible natural regeneration.
Despite significant efforts made around 1 970 to heighten public opinion, to conserve and study genetic diversity of this species.
C.
atlantica has been poorly valorised and the genetic resource is still endangered.
Studies about conservation and evaluation of the remaining C.
atlantica resource must be initiated as soon as possible in order to: 1) update Destremau's inventory; 2) make in and ex-situ conservation (prevention from grazing and illegal exploitation, stimulation of natural regeneration, conservation plantations and seed banks), 3) estimate the amount and structuration of genetic variability with biochemical markers, adaptive and economic traits (growth, architecture, tolerance to drought) .
4) register stands for seed supply.
5) estimate genetic parameters of major traits if a breeding program was planned.
Abstract FRE
fspece cndemique du Ham Atlas Occidental.
le Cypres de 1'Atlas (Cupressus atlantica Gauss.) est une espece forestiere remarquable.
Particulierement bien adapte aux conditions climatiques semi-arides et anx fortes amplitudes thermic|ues.
le Cypres de 1'Atlas offre une grande plasticitc.
montre une bonne croissance et produit un Inns de qualite.
L'espeee presente un interet potentiel important taut pour la protection tlu milieu que pour la vie cconomique locale.
Dans son aire d'originc.
aujourd'hui limite a quelques milliers d'hectares.
il se presente generalement sous tonne d'ilots d'arbres souvent mutiles.
Panui les 18 stations decrites par Destremau en 1974.
seule la foret de I'Aghbar constitue un assez grand peuplement.
toutcfois assez pen dense.
D'autre part, la forte pression de paturage reduit a neant tout espoir de regeneration naturelle.
Malgre les efforts de sensibilisation.
de protection et d'etude de la diversite genetique inities dans les anuees 70.
l'espeee a etc pen valohsee et sa ressource genetique est aujourd'hui encore menacee.
l)es operations de conservation et devaluation de cette ressource encore existante doivent etre entreprises des que possible.
Ces travaux permettrout de: I) reactualiser l'iuventaire effectue par Destremau, 2) conserver in et ex-silu la ressource (mise en defens de peuplements et aide a la regeneration, plantations conservatoires, banque de semences).
}) evaluer l'ampleur et la structuration de la variability genetique de caracteres neutres (marqueurs biochimiques).
adaptatifs et d'interet cconomique majeur (croissance.
architecture, resistance a la secheresse).
4) classer des peuplements pour l'approvisionnement controle en graines.
5) estimer les parametres genetiques des prineipaux caracteres dans I'eventualite d'un programme ({'amelioration genetique.
American Psychological Association (APA)
Pichot, Christian. 1997. Le cypres de l'atlas - ressources genetiques. Annales de la Recherché Foresriere au Maroc،Vol. 1997, no. 8-10, pp.144-154.
https://search.emarefa.net/detail/BIM-534612
Modern Language Association (MLA)
Pichot, Christian. Le cypres de l'atlas - ressources genetiques. Annales de la Recherché Foresriere au Maroc No. 8-10 (1997), pp.144-154.
https://search.emarefa.net/detail/BIM-534612
American Medical Association (AMA)
Pichot, Christian. Le cypres de l'atlas - ressources genetiques. Annales de la Recherché Foresriere au Maroc. 1997. Vol. 1997, no. 8-10, pp.144-154.
https://search.emarefa.net/detail/BIM-534612
Data Type
Journal Articles
Language
French
Notes
Text in French; abstracts in French and English.
Record ID
BIM-534612
