Developing a core collection of olive (Olea europaea L.) based on molecular markers (DArTs, SSRs, SNPs) and agronomic traits

Developing a core collection of olive (Olea europaea L.) based on molecular markers (DArTs, SSRs, SNPs) and agronomic traits

Molecular markers (SSR, SNP and DArT) and agronomical traits have been used in the world’s largest olive (Olea europaea L.) germplasm collection (IFAPA, Centre Alameda del Obispo, Cordoba, Spain) to study the patterns of genetic diversity and underlying genetic structure among 361 olive accessions....

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Bibliographic Details
Published in:Tree genetics & genomes Vol. 8; no. 2; pp. 365 - 378
Main Authors: Belaj, Angjelina, Dominguez-García, Maria del Carmen, Atienza, Sergio Gustavo, Martín Urdíroz, Nieves, De la Rosa, Raúl, Satovic, Zlatko, Martín, Antonio, Kilian, Andrzej, Trujillo, Isabel, Valpuesta, Victoriano, Del Río, Carmen
Format: Journal Article
Language:English
Published: Berlin/Heidelberg Springer-Verlag 01-04-2012
Springer Nature B.V
Subjects:
agronomic traits
Algorithms
alleles
Biomedical and Life Sciences
Biotechnology
Conservation
data collection
Data processing
Forestry
Genetic distance
Genetic diversity
genetic markers
Genetic structure
genetic variation
Genomes
Geographical distribution
Germplasm
germplasm conservation
Life Sciences
microsatellite repeats
Olea
Olea europaea
olives
Original Paper
Plant Breeding/Biotechnology
Plant Genetics and Genomics
Single-nucleotide polymorphism
Tree Biology
Spain
Molecular markers
Olive germplasm
Olive breeding
Genetic diveristy
Core sets
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Summary:Molecular markers (SSR, SNP and DArT) and agronomical traits have been used in the world’s largest olive (Olea europaea L.) germplasm collection (IFAPA, Centre Alameda del Obispo, Cordoba, Spain) to study the patterns of genetic diversity and underlying genetic structure among 361 olive accessions. In addition the marker data were used to construct a set of core collections by means of two different algorithms (MSTRAT and PowerCore) based on M (maximization) strategy. Our results confirm that the germplasm collection is a useful source of genetically diverse material. We also found that geographical origin is an important factor structuring genetic diversity in olive. Subsets of 18, 27, 36, 45 and 68 olive accessions, representing respectively 5%, 7.5%, 10%, 12.5% and 19% of the whole germplasm collection, were selected based on the information obtained by all the data set as well as each marker type considered individually. According to our results, the core collections that represent between 19% and 10% of the total collection size could be considered as optimal to retain the bulk of the genetic diversity found in this collection. Due to its high efficiency at capturing all the alleles/traits states found in the whole collection, the core size of 68 accessions could be of special interest for genetic conservation applications in olive. The high average genetic distance and diversity and the almost equal representation of accessions from different geographical regions indicate that the core size of 36 accessions, could be the working collection for olive breeders.
Bibliography:http://dx.doi.org/10.1007/s11295-011-0447-6
ObjectType-Article-2
SourceType-Scholarly Journals-1
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content type line 23
ISSN:1614-2942
1614-2950
DOI:10.1007/s11295-011-0447-6