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  • 1
    Electronic Resource
    Electronic Resource
    Intraspecific olive diversity assessed with AFLP (2003)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 122 (2003), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Amplified fragment length polymorphism (AFLP) was used to study diversity within and among Spanish olive varieties. A high degree of diversity was found among the varieties present in each growing region. Olive oil production and quality relies on appropriate cultivar selection as well as good orchard management. Production based only on a few superior cultivars would result in improved yield, oil quality, and production management. Amplified fragment length polymorphism were evaluated as a tool to identify the intraspecific and intravarietal diversity of olive. Amplified fragment length polymorphism analysis of 38 accessions belonging to 10 cultivars using six primer combinations produced 106 polymorphic bands. Results were analyzed for similarity among accessions via unweighted pair-group means cluster analysis, resulting in 10 clusters corresponding to named variety designations. Similarity among varieties ranged from 0.60 to 0.72. Diversity within varieties was identified. Similarity within named varieties (accessions with the same varietal name) ranged from 0.75 to 0.96. Differences in several markers were found among 34 accessions. Intravarietal diversity was shown to exist within the Spanish olive varieties grown in the region surrounding Valencia.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1439-0523.2003.00808.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Pear decline in Spain (1997)
    Oxford, UK : Blackwell Science Ltd
    Plant pathology 46 (1997), S. 0 
    Details
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Pear decline in Spain, associated with the presence of phytoplasmas in sieve tubes, was studied. Samples of healthy and diseased pear trees were tested to confirm the presence of the pathogen. The polymerase chain reaction (PCR) technique was used, with universal and specific primers. Specimens of Cacopsylla pyri were also analysed by PCR. Phytoplasmas were detected in 79% of trees with premature reddening, in 67% of trees with weakness and necrotic spots (cv. Limonera) and in 20% of trees without symptoms. The pathogen was also detected in the psyllids, indicating that C. pyri could be the vector of the disease in Spain.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-3059.1997.d01-57.x
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Analysis of a germplasm collection of loquat (Eriobotrya japonica Lindl.) (2000)
    Springer
    Euphytica 114 (2000), S. 187-194 
    Details
    ISSN: 1573-5060
    Keywords: characterization ; cultivar description ; genetic resources ; morphological traits ; phenology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract A cultivar description of a loquat collection based on morphological traits, phenology and fruit quality is presented. Vegetative characteristics such as leaf blade length and width, leaf blade shape in cross section, thickness and distribution of lateral and central shoots, and size and shape of flower clusters were useful to distinguish cultivars. In this collection we found all categories described by UPOV for fruit characteristics such as size, skin and flesh color, shape in cross and longitudinal section, shape of stalk end of the fruit, shape of apex and calyx cavity, all of them allowed to distinguish cultivars. Flowering time was highly correlated to ripening time and percentage of fruiting spurs. Fruit set was correlated with flower cluster size. Vigor was highly correlated with fruit size and weight, which may be due in part to the method of cultivar selection by growers. Many fruit characteristics that are important to breeders are present in this collection with the exception of very late ripening genotypes. The PCA resulted in three main components that represented fruit size, phenology and quality of fruits respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1003950215426
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Analysis of apricot germplasm from the European ecogeographical group (1998)
    Springer
    Euphytica 102 (1998), S. 93-99 
    Details
    ISSN: 1573-5060
    Keywords: apricot ; cultivars ; fruit quality ; phenology ; principal components ; Prunus armeniaca
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Morphological, phenological and fruit quality traits of 55 apricot cultivars, including the most important clones grown in Spain, France and Italy, were evaluated using principal component analysis. Given that the studied material was made up of commercial cultivars, the range of variation observed was narrower than expected. Variation was observed for traits related to phenology and fruit quality. The only correlation observed between morphology and phenology was that of blossom and budbreak season being correlated with internode length. Harvest season was negatively correlated with acidity and not correlated with total soluble solids (TSS). Native cultivars from Spain and Tunisia are a good source of early ripening but they lack fruit size and postharvest handling qualities, respectively. The most appreciated fruit quality characteristics were present in several cultivars.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1018332312570
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    Paper (German National Licenses)
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