{"id":852,"date":"2021-01-01T22:38:04","date_gmt":"2021-01-01T22:38:04","guid":{"rendered":"http:\/\/cannadaily.news\/?p=852"},"modified":"2021-01-01T22:38:07","modified_gmt":"2021-01-01T22:38:07","slug":"cannabis-plant-origins-to-the-tibetan-plateau","status":"publish","type":"post","link":"https:\/\/cannadaily.news\/fr\/cannabis-plant-origins-to-the-tibetan-plateau\/","title":{"rendered":"L\u2019Origine du Cannabis : le plateau tib\u00e9tain"},"content":{"rendered":"
<\/div><\/div><\/div>\n\n\n\n

Aujourd'hui, nous avons de tr\u00e8s bonnes nouvelles: un groupe de chercheurs de l\u2019Universit\u00e9 du Vermont a d\u00e9montr\u00e9 que la plante de cannabis s\u2019est d\u00e9velopp\u00e9e il y a 28 millions d\u2019ann\u00e9es, dans une r\u00e9gion sp\u00e9cifique du plateau tibetain.<\/p>\n\n\n\n

L\u2019\u00e9tude essaye d\u2019\u00e9tablir le plus ancien anc\u00eatre commun de la plante de cannabis. Les chercheurs ont analys\u00e9 les donn\u00e9es sur la distribution des plantes sauvages, en incluant \u201c155 \u00e9tudes de fossiles de pollens\u201d.<\/p>\n\n\n\n

Ils ont beaucoup avanc\u00e9 sur ce sujet, en vue de d\u00e9terminer les origines de la plante de cannabis, lesquelles restaient encore inconnues. Mais finalement, ils ont r\u00e9v\u00e9l\u00e9 que la plante aurait prosp\u00e9r\u00e9 dans une steppe caract\u00e9ris\u00e9e pour avoir des conditions tr\u00e8s arides.\nCette r\u00e9gion fut, \u00e0 l\u2019origine, cr\u00e9\u00e9e par les formations tectoniques du plateau tibetain. Et la plante fut d\u00e9couverte autour du Lac Qinghai, d\u00e9montrant donc une existence de 28 millions d\u2019ann\u00e9es !<\/p>\n\n\n\n

C\u2019est-\u00e0-dire que la plante aurait cohabit\u00e9 avec les premi\u00e8res communaut\u00e9s steppiques qui ont peupl\u00e9 l\u2019Asie. Bien que le pollen du cannabis ressemble au pollen du houblon, les chercheurs ont r\u00e9ussi \u00e0 distinguer les deux sp\u00e9cimens. Ils affirment que le houblon et le cannabis partagent un anc\u00eatre commun.<\/p>\n\n\n\n

\"cannabis<\/figure><\/div>\n\n\n\n

L'ancien cannabis<\/strong><\/h2>\n\n\n\n


Depuis le plateau tibetain, le cannabis est arriv\u00e9 en Europe il y a pr\u00e8s de 6 millions d'ann\u00e9es. Pendant des milliers d'ann\u00e9es, le cannabis a migr\u00e9 \u00e0 travers le monde. Depuis l\u2019Afrique, il arrive en Am\u00e9rique du Sud au XIXe si\u00e8cle, et il aborde les \u00c9tats-Unis au d\u00e9but du XXe si\u00e8cle.
Apr\u00e8s une \u00e9volution de 28 millions d\u2019ann\u00e9es, et un usage probant par les humains depuis 30 mill\u00e9naires, cette \u00e9tude \u00e9claire notre compr\u00e9hension sur la plante. Les humains auraient utilis\u00e9 le cannabis pendant au moins 27.000 ans. La question n\u2019est pas \u2018quand est-ce que la plante de cannabis a \u00e9volu\u00e9\u2019, sinon \u2018depuis quand les humains auraient commenc\u00e9 \u00e0 l\u2019utiliser comme un m\u00e9dicament et dans des c\u00e9r\u00e9monies rituelles\u2019.
Pendant plusieurs ann\u00e9es, les scientifiques \u00e9mirent l'hypoth\u00e8se selon laquelle cette plante curative et psychotrope aurait \u00e9volu\u00e9 en Asie centrale, et pour la premi\u00e8re fois, ils auraient d\u00e9couvert sa position exacte.<\/p>\n\n\n\n

\"cannabis<\/figure><\/div>\n\n\n\n

L\u2019endroit d\u2019origine du cannabis se trouve \u00e0 pr\u00e8s de quelques centaines de kilom\u00e8tres des cavernes Baishiya Karst. Les chercheurs ont affirm\u00e9 que cette r\u00e9gion fut habit\u00e9e par les anciens cousins de l\u2019Homo Sapiens : les Denisovans.
Des tests ADN faits sur une mandibule trouv\u00e9e dans ces cavernes d\u00e9montrent l'existence des populations Denisovans. Cela indique que l'esp\u00e8ce \u00e9tait plus r\u00e9pandue que ce qu'on pensait. De plus, les plus anciennes souches de cannabis ont \u00e9t\u00e9 trouv\u00e9es dans la m\u00eame r\u00e9gion.<\/p>\n\n\n\n

Et le cannabis fut consid\u00e9r\u00e9 comme ill\u00e9gal pendant plusieurs ann\u00e9es ! Toutefois, le XXI si\u00e8cle a vu l\u2019effondrement des lois punitives par la pression du peuple am\u00e9ricain ainsi que d\u2019autres pays autour de la plan\u00e8te. La l\u00e9galisation de la marijuana est, litt\u00e9ralement, en expansion \u00e0 travers le globe.<\/p>\n\n\n\n

\"ancient<\/figure><\/div>","protected":false},"excerpt":{"rendered":"

We come today with great news from a team of researchers at the University of Vermont who present us with their evidence that the…<\/p>","protected":false},"author":2,"featured_media":877,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[94],"tags":[375,373,377,17,376,378,379,305,374],"gutentor_comment":130,"yoast_head":"\nCannabis Plant Origins to the Tibetan Plateau - CannaDaily<\/title>\n<meta name=\"description\" content=\"The University of Vermont present us their evidence that the cannabis origins evolved 28 million years ago in a specific area of the Tibetan Plateau.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"http:\/\/cannadaily.news\/fr\/cannabis-plant-origins-to-the-tibetan-plateau\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Cannabis Plant Origins to the Tibetan Plateau - 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