[Comparison of genetic diversity (RAPD) of ex situ collections and natural populations of Naufraga balearica Constance & Cannon].
Naufraga balearica Constance & Cannon (Hydrocotyloideae) cultivated in the Botanical Gardens of Lyon, Brest and Porquerolles stem from two or three shoots collected in Corsica in 1981. The genetic diversity of these plants was evaluated using RAPD markers (random amplified polymorphic DNA). It was compared with the diversity found in individuals collected from five natural sites in Majorca. Only a few patterns were present in the collections derived from the Corsican shoots. The plants kept in the Botanical Gardens appeared to be of clonal origin: most individuals (81%) showed a 'dominant pattern'. In contrast, nearly all individuals sampled in the natural populations of the Balearic Islands exhibited a unique pattern. The five populations appeared genetically distinct; the individuals probably resulted from cross-fertilizations. The cultivated Corsican plants from Lyon, Brest and Porquerolles appeared genetically closely related to the individuals sampled in the population of Cala San Vicente in Majorca. The spontaneity of this paleoendemic in Corsica was discussed.
Fridlender
A
A
Laboratoire de phanérogamie, MNHN, Paris, France.
Boisselier-Dubayle
M C
MC
D005602:France; D014644:Genetic Variation; D005843:Geography; D008521:Mediterranean Islands; D010802:Phylogeny; D018520:Plant Shoots; D010944:Plants / Q000235:genetics*; D019105:Random Amplified Polymorphic DNA Technique; D013030:Spain