@article{fdi:010024126, title = {{M}olecular diversity in pineapple assessed by {RFLP} markers}, author = {{D}uval, {M}.{F}. and {N}oyer, {J}.{L}. and {P}errier, {X}. and {C}oppens d'{E}eckenbrugge, {G}. and {H}amon, {P}erla}, editor = {}, language = {{ENG}}, abstract = {{P}ineapple, #{A}nanas comosus$ ({L}.) {M}err, is the third most important tropical fruit cultivated in all tropical and subtropical countries. {P}ineapple germplasm includes all seven species of the genus #{P}seudananas$. {A} knowledge of its diversity structure is needed to develop new breeding programs. {R}estriction fragment length polymorphism ({RFLP}) was used to study molecular diversity in a set of 301 accessions, most of which were recently collected. {T}his sample was analysed using 18 homologous genomic probes. {D}issimilarities were calculated by a {D}ice index and submitted to {F}actorial {A}nalysis. {T}he same data were represented as a diversity tree constructed with the score method. #{P}seudananas sagenarius$ displayed a high polymorphism and shares 58.7% of its bands with #{A}nanas$. {W}ithin #{A}nanas$, variation appears continuous and was found mostly at the intraspecific level, particularly in the wild species #{A}nanas ananassoides$ and #{A}nanas parguazensis$. {A}s for the cultivated species, #{A}nanas comosus$ appears relatively homogeneous despite its wide morphological variation and #{A}nanas bracteatus$, which is grown as a fence and for fruit, appears still much less variable. {B}y contrast #{A}nanas lucidus$ cultivated by the {A}merindians for fiber, displays a high polymorphism. {T}his tree displayed a loose assemblage of numerous clusters separated by short distances. {M}ost species were scattered in various clusters, a few of these being monospecific. {S}ome accessions which had not been classified, as they shared morphological traits typical of different species, re-group with one or the other, and sometimes with both species in mixed clusters. {N}o reproductive barrier exists in this germplasm and these data indicate the existence of gene flow, enhancing the role of effective sexual reproduction in a species with largely predominant vegetative multiplication. ({R}{\'e}sum{\'e} d'auteur)}, keywords = {{PLANTE} {FRUITIERE} ; {ANALYSE} {GENETIQUE} ; {DIVERSITE} {GENETIQUE} ; {POLYMORPHISME} {GENETIQUE} ; {TECHNIQUE} {RFLP} ; {ANALYSE} {FACTORIELLE} ; {REPRODUCTION} {SEXUEE} ; {MULTIPLICATION} {VEGETATIVE} ; {ETUDE} {EXPERIMENTALE} ; {ZONE} {TROPICALE}}, booktitle = {}, journal = {{T}heoretical and {A}pplied {G}enetics}, volume = {102}, numero = {1}, pages = {83--90}, ISSN = {0040-5752}, year = {2001}, DOI = {10.1007/s001220051621}, URL = {https://www.documentation.ird.fr/hor/fdi:010024126}, }