Titre :
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Genetic variation in Myzus persicae populations associated with host-plant and life cycle category
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Titre original:
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Genetic variation in Myzus persicae populations associated with host-plant and life cycle category
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Auteurs :
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K. Zitoudi ;
J. Margaritopoulos ;
Z. Mamuris ;
J. Tsitsipis
|
Type de document :
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article/chapitre/communication
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Année de publication :
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2001
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Format :
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303-311
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Langues:
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= Anglais
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Mots-clés:
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Myzus persicae
;
RAPD-PCR
;
life cycle category
;
Greece
;
Homoptera
;
Aphididae
;
Genetique des populations
;
Clone
;
Gamme d'hotes
;
Marquage moleculaire
;
RAPD
;
Cycle biologique
;
Nicotiana tabacum
;
Prunus persicae
;
Capsicum annuum
|
Résumé :
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Random amplified polymorphic DNA (RAPD) analysis was applied on 96 clones of Myzus persicae (Sulzer) (Homoptera: Aphididae) representing seven populations collected from different host-plants and regions of Greece. Ten decamer random primers were used to evaluate genetic variation among the examined samples. Despite the variability found between clones, no specific RAPD marker was detected to discriminate the different populations. A significant finding was that aphids from peach and pepper, which were collected far away from tobacco-growing regions, especially those from peach, showed genetic divergence from the tobacco-feeding clones. Moreover, data analysis revealed a significant genetic divergence between holocyclic and anholocyclic populations from tobacco. Lastly, holocyclic clones showed higher level of estimated heterozygosity than the nonholocyclic (anholocyclic, androcyclic and intermediate) ones.
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Source :
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Entomologia Experimentalis Et Applicata VL 99 NO 3
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