scholarly journals A morphological and molecular characterization of vine mealybug populations (Hemiptera, Pseudococcidae) from Tunisia

2012 ◽  
Vol 44 (1) ◽  
pp. 5 ◽  
Author(s):  
Ramzi Mansour ◽  
Vincenzo Cavalieri ◽  
Gaetana Mazzeo ◽  
Kaouthar Grissa Lebdi ◽  
Agatino Russo

Some vine mealybug, <em>Planococcus ficus </em>(Signoret) populations in Tunisian vineyards have been morphologically and genetically characterized. The morphological examination was based on the main distinctive characteristics of species of <em>Planococcus</em>, namely the number and distribution of the multilocular disc pores and tubular ducts on the adult female. This showed the existence of two different vine mealybug populations in Tunisia. Likewise, in the molecular analyses, two separate clades were revealed in the neighbour-joining phylogenetic tree, supporting the morphological studies and suggesting that there are two distinct populations of <em>P. ficus</em> on grapevine in Tunisia.

Genetika ◽  
2012 ◽  
Vol 44 (1) ◽  
pp. 189-200
Author(s):  
Violeta Oro ◽  
Vesna Oro-Radovanovic

The morphology of potato cyst nematodes (PCN) was until recently almost the only way to identify these quarantine organisms. In the last two decades, molecular analyses contributed to faster and more efficient identification of two Globodera species (Globodera pallida and G. rostochiensis) and allowed insight into the genetic structure of those parts that were practically inaccessible by morphological studies. Molecular characterization was performed in ITS1-5.8S-ITS2 region. The comparison was made with sequences of different foreign PCN populations via NCBI GenBank database. The results of molecular studies showed similarities and differences between local and foreign PCN populations in the part of genome that was studied.


2017 ◽  
pp. 69-74
Author(s):  
E.W.L.P. Nunes ◽  
A.O. Ricarte ◽  
E.M. Martínez ◽  
C. Esteras ◽  
G.H.S. Nunes ◽  
...  

2016 ◽  
Author(s):  
Nor’Aishah Hasan ◽  
Mohd Y. Rafii ◽  
Harun A. Rahim ◽  
Nusaibah Syd Ali ◽  
Norida Mazlan ◽  
...  

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