Articles
Evolution of genetic diversity patterns of worldwide Prunus armeniaca L. resources
Article number
1450_39
Pages
297 – 302
Language
English
Abstract
The study aimed to identify and characterize the evolution of the worldwide genetic diversity and structure of modern cultivated apricot accessions over time.
In this context, 1607 apricot accessions including both modern and traditional accessions with different origins through the world were characterized using a set of 25 microsatellite markers.
Results highlighted that all over the world, the modern cultivated varieties presented a quite similar genetic diversity compared to what was observed within the traditional cultivars.
However, it also showed that the improvement programs have mobilized all of the genetic funds identified within ancestral cultivars.
In Europe, the first breeding programs used diversity present locally, by initially mobilizing the Mediterranean cultivars then cultivars from the Iranian-Caucasian zone.
Afterward, looking for other characters, the breeding programs mobilized cultivars derived from East Asia and Central Asia as they are considered as the centre of origin of the species.
Knowledge of this diversity will allow to improve selection programs, particularly on adaptability traits.
In this context, 1607 apricot accessions including both modern and traditional accessions with different origins through the world were characterized using a set of 25 microsatellite markers.
Results highlighted that all over the world, the modern cultivated varieties presented a quite similar genetic diversity compared to what was observed within the traditional cultivars.
However, it also showed that the improvement programs have mobilized all of the genetic funds identified within ancestral cultivars.
In Europe, the first breeding programs used diversity present locally, by initially mobilizing the Mediterranean cultivars then cultivars from the Iranian-Caucasian zone.
Afterward, looking for other characters, the breeding programs mobilized cultivars derived from East Asia and Central Asia as they are considered as the centre of origin of the species.
Knowledge of this diversity will allow to improve selection programs, particularly on adaptability traits.
Publication
Authors
H. Bourguiba, G. Roch, R. Zarkouna, I. Scotti, J.-M. Audergon
Keywords
apricot, Prunus armeniaca L., diversity pattern, population structure, simple sequence repeat (SSR) markers
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