Recovery, morphological and molecular characterization of globe artichoke 'Romanesco' landraces

The 'Romanesco' globe artichoke is of substantial economic importance for Italy, its major world producer. The widespread adoption of single early uniform micropropagated clones has led to erosion of local genetic resources. In an attempt to characterise landrace diversity for future breed...

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Bibliographic Details
Published in:Genetic resources and crop evolution 2008-09, Vol.55 (6), p.823-833
Main Authors: Crinò, Paola, Tavazza, Raffaela, Rey Muñoz, Nestor A, Trionfetti Nisini, Paola, Saccardo, Francesco, Ancora, Giorgio, Pagnotta, Mario Augusto
Format: Article
Language:English
Subjects:
Agriculture
Amplified fragment length polymorphism
Artichokes
Biomedical and Life Sciences
Breeding
Cloning
Conservation
Correlation analysis
Cynara scolymus
Deoxyribonucleic acid
Design factors
DNA
Economic conditions
Economic importance
Erosion
Genetic resources
Germplasm
Heritability
Life Sciences
Morphology
Plant Genetics and Genomics
Plant Physiology
Plant Sciences
Plant Systematics/Taxonomy/Biogeography
Principal components analysis
Regression analysis
Research Article
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Summary:The 'Romanesco' globe artichoke is of substantial economic importance for Italy, its major world producer. The widespread adoption of single early uniform micropropagated clones has led to erosion of local genetic resources. In an attempt to characterise landrace diversity for future breeding activities and/or germplasm conservation, a set of 19 clones derived from plants cultivated in traditional areas of Latium region were typed using a combination of morphological traits (UPOV descriptors) and DNA markers (AFLP and ISSR). Principal Component Analysis and significant correlations among some of the morphological traits showed that a reduced number of descriptors could be used efficiently to discriminate between the clones. Stepwise regression analysis identified a number of significant and consistent associations between certain morphological characters and marker loci. Heritability for important economic traits were computed; moreover, remarkable clones for future breeding activities were recognized. The variability present within the farmers' fields is an important factor in the design of a rational strategy of in situ germplasm conservation.
ISSN:0925-9864
1573-5109
DOI:10.1007/s10722-007-9287-5