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Alonso Segura, Jose Manuel - Autor (correspondencia)
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Agro-morphological diversity of local and international accessions of the Spanish Pear Germplasm Bank in Zaragoza

Publicado en:Acta Horticulturae. 1303 71-78 - 2021-02-05 1303(), doi: 10.17660/ActaHortic.2021.1303.11

Alonso Segura, Jose Manuel;

Afiliaciones

Agrifood Res & Technol Ctr Aragon CITA, Hort Dept, Av Montanana 930, Zaragoza 50059, Spain - Autor o Coautor
Centro de Investigaci?n y Tecnolog?a Agroalimentaria de Arag?n - Autor o Coautor
Centro de Investigación y Tecnología Agroalimentaria de Aragón - Entidad de origen
Instituto Nacional de Investigacion y Tecnologia Agraria y Alimentaria - Financiador

Resúmen

Resúmen: A set of 34 landraces and local accessions and 39 international reference cultivars from the Spanish Pear Germplasm Bank in Zaragoza (Spain) was agro-morphologically characterized based on 50 Bioversity International and UPOV descriptors (24 quantitative and 26 qualitative) in order to evaluate the agro-morphological variability of the Spanish germplasm, identify the most relevant differences with the international reference cultivars and group the accessions according to their agro-morphological distances. The correlation analysis between the 24 quantitative descriptors revealed few significant correlations, four positive ('leaf blade length'-'leaf blade width', 'season of ripening'-'fruit size', 'russet around eye basin'-'russet on cheeks' and 'russet on cheeks'-'russet around stalk') and one negative ('leaf blade width'-'ratio length/with'). The traits showing the highest phenotypic variability were 'fruit size', 'fruit firmness', 'fruit acidity', 'leaf distance from the stipules to the petiole base' and 'length of leaf pointed tip'. As a whole, the Spanish accessions were more precocious in flowering and ripening time than the international reference group, showed a bigger flower petal size, a smaller fruit size, a more rounded fruit shape, less incidence of skin russet and more 'spreading' fruit attitude of sepals. The dendrogram obtained from the agro-morphological distances do not group the accessions according to their geographical origin; nevertheless, a small group of seven Spanish cultivars ('Don Guindo', 'L-3.2.10', 'Duquesa Barreda', 'Limón de Verano', 'Malacara', 'Tocinera' and 'Magallón') showed a higher distance to the rest of accessions included in the study.

Palabras clave: agro-morphological characterization; cultivars; genetic resources; variability; Agro-morphological characterization; Apricot germplasm; Genetic resources; Pyrus communis

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WoS Scopus by Scimago
Best Categ.-Horticulture
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IF-0.163--6.500
Rank-78/94
Q-Q4-----B1
D-D9-
T-T3
P-P83
Index ERIC-
Index Emergin-
Index AHCI-