Genetic structure is determined by stochastic factors in a natural population of Drosophila buzzatii in Argentina

Genetica ◽  
1994 ◽  
Vol 92 (2) ◽  
pp. 123-128 ◽  
Author(s):  
Juan C. Vilardi ◽  
Esteban Hasson ◽  
Constantina Rodriguez ◽  
Juan J. Fanara
Keyword(s):  
Genetic Structure ◽  
Natural Population ◽  
Drosophila Buzzatii

Inversion Polymorphism, Longevity, and Body Size in a Natural Population of Drosophila buzzatii

Evolution ◽  
1999 ◽  
Vol 53 (2) ◽  
pp. 612 ◽  
Author(s):  
Constantina Rodriguez ◽  
Juan J. Fanara ◽  
Esteban Hasson
Keyword(s):  
Body Size ◽  
Natural Population ◽  
Inversion Polymorphism ◽  
Drosophila Buzzatii

scholarly journals Genetic structure of a natural population of Coriolus versicolor (L. ex Fr.) Quél.

1978 ◽  
Vol 32 (1) ◽  
pp. 55-65 ◽  
Author(s):  
N. K. Todd ◽  
A. D. M. Rayner
Keyword(s):  
Genetic Structure ◽  
Natural Population ◽  
Genetic Relationships ◽  
Coriolus Versicolor ◽  
White Rot

SUMMARYExperiments were carried out to investigate genetic relationships within a population of Coriolus versicolor (a polyporaceous basidiomyceto causing white rot of wood) present in a birch stump. The population consisted of individual dikaryons occupying longitudinally continuous columns of decay separated from one another by narrow, dark, relatively undecayed interaction zones. These dikaryons were shown to be genetically homogeneous throughout their respective decay columns by dedikaryotization procedures. They were mutually antagonistic when paired in culture, but monokaryons derived from their fruit-bodies were interfertile. Experiments using synthesized dikaryons indicated that antagonism is inevitable between genetically distinct mycelia, but that the intensity of interaction diminishes with increased relatedness. Results of pairings between synthesized dikaryons and monokaryons varied according to the relatedness of the isolates. Antagonism invariably occurred when the monokaryon contained a nucleus differing from both nuclei in the dikaryon, but this did not necessarily prevent dikaryotization. Often in this situation dikaryotized sectors developed in the monokaryon visibly separated by zones of antagonism (‘tracks’). Where the monokaryon contained the same nucleus as one of the components of the dikaryon, antagonism usually occurred initially, but normally the colonies eventually fused.

Variability and Genetic Structure of a Natural Population of Trichoderma spp. Isolated from Different Substrates in Morocco

2017 ◽  
Vol 17 (1) ◽  
pp. 1-11
Author(s):  
Wafa Khirallah ◽  
Amina Touhami ◽  
Ghizlane Diria ◽  
Fatima Gaboun ◽  
Rachid Benkirane ◽  
...  
Keyword(s):  
Genetic Structure ◽  
Natural Population ◽  
Trichoderma Spp

Analysis of the Genetic Structure of a Natural Population of Anastrepha fraterculus (Diptera: Tephritidae)

1999 ◽  
Vol 92 (5) ◽  
pp. 731-736 ◽  
Author(s):  
Andrea C. Alberti ◽  
Graciela Calcagno ◽  
Beatriz O. Saidman ◽  
Juan C. Vilardi
Keyword(s):  
Genetic Structure ◽  
Natural Population ◽  
Anastrepha Fraterculus
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