Resistance to Verticillium wilt in olive progenies from open-pollination

Arias‐Calderón, Rocío; León, Lorenzo; Bejarano-Alcázar, José; Belaj, Angjelina; Rosa, Raúl de la; Rodrı́guez-Jurado, Dolores

doi:10.1016/j.scienta.2015.01.015

Cited by 28 publications

(26 citation statements)

References 30 publications

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“…Parents included some of the cultivars of the World Olive Collection of IFAPA Córdoba (WOGB, CAP-UCO-IFAPA), Spain, that have showed higher resistance response in previous works ('Changlot Real', 'Dolce Agogia', 'Empeltre' and 'Frantoio') as well as cultivars cataloged previously as moderately susceptible ('Koroneiki') and susceptible ('Arbosana') (López-Escudero et al 2004;Martos-Moreno et al 2006;Arias-Calderón et al 2015).…”

Section: Plant Materialsmentioning

confidence: 99%

“…In olive, the wide dispersion of the disease and the increase importance of crop losses associated with the rapid extend of fungal pathotypes highly virulent, together with the reduced number of traditional cultivars showing a significant level of resistance to VW, have promoted the development of breeding programs to select new cultivars with improved resistance levels to the disease (Erten and Yildiz 2011;Trapero et al 2013;Arias-Calderón et al 2015). However, even in progenies from crosses between cultivars of known merit, most of the seedlings obtained show poor agronomic performance and should be discarded as soon as possible.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of Verticillium wilt resistance in selections from olive breeding crosses

et al. 2015

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Verticillium wilt (VW) resistance was evaluated in genotypes from olive crosses including resistant cultivars as parents. Thirty-eight genotypes from three crosses were evaluated: 'Changlot Real' 9 'Dolce Agogia' (16), 'Frantoio' 9 'Arbosana' (13) and 'Koroneiki' 9 'Empeltre' (9). These genotypes were previously selected for several agronomic traits from wider initial progenies populations. Several disease severity and plant colonization parameters were evaluated in inoculation experiments under controlled conditions by dipping roots cutting in a conidial suspension of a highly virulent defoliating isolate of Verticillium dahliae. Significant differences among the evaluated genotypes, including parents and selections from crosses, were obtained for all the disease parameters assessed. A wide variability in disease parameters was observed in the three cross combinations tested. Genotypes with lower relative susceptible index values than both parents were found in the three progenies tested and 10 out of 38 genotypes (26 %) were finally classified as resistant. The level of resistance of these genotypes will be confirmed in future studies under field conditions.

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Section: Plant Materialsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Evaluation of Verticillium wilt resistance in selections from olive breeding crosses

et al. 2015

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“…sylvestris ideal for in situ conservation programmes. Wild genotypes from the forest stand investigated in the present study, as well as progenies obtained from crosses with cultivar 'Picual', have been recently studied with the aim of exploiting the characteristics of this subspecies to improve the Spanish olive breeding programme from a qualitative and an agronomic point of view (Klepo et al, 2013;Arias-Calderon et al, 2015). The results stressed that the gene pool of this wild population could actually represent a future source of genetic diversity linked to interesting agronomical and ecophysiological characteristics, and suggested the high conservation value of this forest genetic resource.…”

Section: Population Genetic Diversitymentioning

confidence: 99%

“…The results of our study have therefore provided important information which can be used to plan conservation and utilization of wild olive genetic resources based on improved knowledge of the spatial extent of dispersal in wild olive. Wild olive has become increasingly of interest for breeding programmes of cultivated olive due to its resistance to biotic stresses and earliness of bearing (Klepo et al, 2013Arias-Calderon et al, 2015). The presence of weak but significant SGS suggests that, for future ex situ conservation and breeding strategies, seeds need to be collected from selected parents belonging to different genetic clusters at a distance >40 m to avoid collecting seeds from genetically related individuals.…”

Section: Implications For Conservation and Use Of O Sylvestris Genetmentioning

confidence: 99%

“…resistance to diseases, stress) to be introduced into the genome of cultivated plants (Fischer and Fischer, 2004;Hajjar and Hodgkin, 2007;Sorkheh et al, 2009;De la Rosa et al, 2014). Indeed, Klepo et al (2013Klepo et al ( , 2014 and Arias-Calderon et al (2015) demonstrated the usefulness of wild olive for generating new genotypes with relevant characteristics. Despite their acknowledged importance, wild olive populations are being affected by several threats due to human activities, climatic pressure and gametic introgression from plantations.…”

Section: Introductionmentioning

confidence: 99%

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Pollen-mediated gene flow and fine-scale spatial genetic structure inOlea europaeasubsp.europaeavar.sylvestris

Beghè

Piotti

Šatović

et al. 2016

Ann Bot

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Background and Aims Wild olive (Olea europaea subsp. europaea var. sylvestris) is important from an economic and ecological point of view. The effects of anthropogenic activities may lead to the genetic erosion of its genetic patrimony, which has high value for breeding programmes. In particular, the consequences of the introgression from cultivated stands are strongly dependent on the extent of gene flow and therefore this work aims at quantitatively describing contemporary gene flow patterns in wild olive natural populations.Methods The studied wild population is located in an undisturbed forest, in southern Spain, considered one of the few extant hotspots of true oleaster diversity. A total of 225 potential father trees and seeds issued from five mother trees were genotyped by eight microsatellite markers. Levels of contemporary pollen flow, in terms of both pollen immigration rates and within-population dynamics, were measured through paternity analyses. Moreover, the extent of fine-scale spatial genetic structure (SGS) was studied to assess the relative importance of seed and pollen dispersal in shaping the spatial distribution of genetic variation.Key Results The results showed that the population under study is characterized by a high genetic diversity, a relatively high pollen immigration rate (0Á57), an average within-population pollen dispersal of about 107 m and weak but significant SGS up to 40 m. The population is a mosaic of several intermingled genetic clusters that is likely to be generated by spatially restricted seed dispersal. Moreover, wild oleasters were found to be selfincompatible and preferential mating between some genotypes was revealed.Conclusions Knowledge of the within-population genetic structure and gene flow dynamics will lead to identifying possible strategies aimed at limiting the effect of anthropogenic activities and improving breeding programmes for the conservation of olive tree forest genetic resources.

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Elaboration of Table Olives: Assessment of New Olive Genotypes

Rallo

Morales‐Sillero

Brenes

et al. 2018

Euro J Lipid Sci & Tech

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Thirty‐three new genotypes coming from a table olive cross‐breeding program are evaluated to assess their adaptability to standard processes, namely Spanish‐style and black ripe olives. Different physical and chemical parameters are evaluated in fresh fruits, processed olives, and brines. Most of these traits exhibit large variability among all genotypes and within each cross. Seven new genotypes, 05–138, 05–166, 05–217, 05–322, 05–499, 04–1390, and 04–1396, are selected based on fruit weight, pulp‐to‐pit ratio, olive oil content, and bruising parameters. In particular, two genotypes (04–1355 and 05–271) did not develop fermentation by lactic acid bacteria. Some genotypes had firmness problems in the final product, especially the 02–1000, and in both elaboration processes this cultivar was excessively soft. Other genotypes developed an unacceptable color when they were processed as Spanish‐style olives. Nevertheless, all new genotypes could be elaborated as both Spanish‐style and black ripe olives by adapting specific criteria in the processes for each genotype. Correlations between traits measured in fresh fruit and those measured in processed olives are explored. Practical Applications: Currently, the consumption of table olives is increasing and the table olive industry has a greater problem with the raw material that reaches its cooperatives. The relevance of this work is that almost all genotypes tested have produced a final product of high quality. In addition, they have agronomic advantages over traditional cultivars. It opens up the possibility to employ theses new cultivars to obtain table olives, both Spanish‐style and black ripe olives, with less post‐harvest, and processing problems. New olive genotypes are processed as both Spanish‐style and black ripe olives. An edible final product is obtained.

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Resistance to Verticillium wilt in olive progenies from open-pollination

Cited by 28 publications

References 30 publications

Evaluation of Verticillium wilt resistance in selections from olive breeding crosses

Evaluation of Verticillium wilt resistance in selections from olive breeding crosses

Pollen-mediated gene flow and fine-scale spatial genetic structure inOlea europaeasubsp.europaeavar.sylvestris

Elaboration of Table Olives: Assessment of New Olive Genotypes

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