期刊论文详细信息
Revista de Protecci贸n Vegetal
GENETIC DIVERSITY OF WILD Nicotiana SPECIES II: MOLECULARCHARACTERIZATION USING RAPD MARKERS
Hernández, Yuniet2  Valdés de la Cruz, Marlyn1  González-Pérez, Lien1  Piñeiro, Daniel3  Vázquez-Lobo, Alejandra3 
[1] Universidad de La Habana, Ciudad de La Habana, Cuba;Instituto Nacional de Ciencias Agrícolas (INCA), La Habana, Cuba;Universidad Autónoma de México (UNAM), Coyoacán, México
关键词: Nicotiana;    genetic diversity;    polymorphism;    Random Amplified Polymorphic DNA (RAPD) markers ;     ;     ;    (Recibido 4-3-2010;    Aceptado 17-5-2010)  ;    INTRODUCCIÓ;    NLa caracterizació;    n de los recursos fitogené;    ticos del gé;    nero Nicotiana está;    considerada entre las lí;    neas de investigació;    n estraté;    gicas del cultivo a nivel mundial;   
DOI  :  
学科分类:农业科学(综合)
来源: Centro Nacional de Sanidad Agropecuaria
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【 摘 要 】

Wild Nicotiana species are reservoir of genes for several pests, besides other genes for important phytochemical and quality traits, which are not present in cultivated varieties. The application of Random Amplified Polymorphic DNA (RAPD) analysis to determine the degree of genetic variation among ten wild Nicotiana species is herein presented. Four of the ten primers used in RAPD analysis, produced amplification products that were too faint to score or could not be consistently reproduced and six primers yielded a total of 117 bands, all of them polymorphic. All the bands were scored from the comparison of amplification, with an average of 19.5 bands scored per primer. The highest level of polymorphism among the species was observed for Nicotiana velutina Wheelen and Nicotiana glutinosa L., with 35.89% and 32.47% respectively, both from subgenus Petunioides. In contrast, the lowest level of polymorphism (18,80%) was observed for Nicotiana knightiana Goodsp, subgenus Rustica. The clustering pattern matched with the traditional classification of Nicotiana species. In nine of the ten wild Nicotiana species evaluated, all the primers generated at least two specifics bands. The total of the 32 species-specific markers identified in the present study will be useful in the genetic breeding programs.

【 授权许可】

CC BY-NC   

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