Selecting with markers linked to the PPVres major QTL is not sufficient to predict resistance to Plum Pox Virus (PPV) in apricot

Decroocq, Stéphane; Chague, Aurélie; Lambert, Patrick; Roch, Guillaume; Audergon, J.M.; Geuna, F.; Chiozzotto, Remo; Bassi, D.; Dondini, Luca; Tartarini, Stefano; Salava, J.; Krška, B.; Palmisano, F.; Karayiannis, I.; Decroocq, Véronique

doi:10.1007/s11295-014-0750-0

Cited by 34 publications

(46 citation statements)

References 21 publications

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“…For example, the susceptible cultivar Alba and the selection (1002) 8-6 also showed these alleles. Similarly, Decroocq et al (2014) investigated the markers and concluded that the use of markers co-localizing with the PPVres major locus is not fully reliable for resistant apricot selection. We have not tested the reliability of the markers because we do not have phenotypic data for Turkish accessions.…”

Section: Discussionmentioning

confidence: 99%

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Evaluation of Turkish apricot germplasm using SSR markers: Genetic diversity assessment and search for Plum pox virus resistance alleles

Gürcan

Öcal

Yılmaz

et al. 2015

Scientia Horticulturae

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Section: Discussionmentioning

confidence: 99%

“…Three SSR markers, PGS1.21 PGS1.23, and PGS1.24, have been discovered to show allelic variants associated with PPVres without recombinants (Soriano et al, 2012). The potential use of these three SSR markers for MAS studies was investigated by Soriano et al (2012), Rubio et al (2014) and Decroocq et al (2014).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Turkish apricot germplasm using SSR markers: Genetic diversity assessment and search for Plum pox virus resistance alleles

Gürcan

Öcal

Yılmaz

et al. 2015

Scientia Horticulturae

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“…; Decroocq et al . ). However, selection based exclusively on the PPVres locus was not sufficient to unambiguously select PPV‐resistant apricot cultivars (Decroocq et al .…”

Section: Introductionmentioning

confidence: 97%

“…However, selection based exclusively on the PPVres locus was not sufficient to unambiguously select PPV‐resistant apricot cultivars (Decroocq et al . ; Rubio et al . ), suggesting that recombination can occur between the markers and the resistance locus or that this locus is not sufficient by itself to determine resistance to sharka.…”

Section: Introductionmentioning

confidence: 99%

New insights into the history of domesticated and wild apricots and its contribution to Plum pox virus resistance

et al. 2016

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Studying domesticated species and their wild relatives allows understanding of the mechanisms of population divergence and adaptation, and identifying valuable genetic resources. Apricot is an important fruit in the Northern hemisphere, where it is threatened by the Plum pox virus (PPV), causing the sharka disease. The histories of apricot domestication and of its resistance to sharka are however still poorly understood. We used 18 microsatellite markers to genotype a collection of 230 wild trees from Central Asia and 142 cultivated apricots as representatives of the worldwide cultivated apricot germplasm; we also performed experimental PPV inoculation tests. The genetic markers revealed highest levels of diversity in Central Asian and Chinese wild and cultivated apricots, confirming an origin in this region. In cultivated apricots, Chinese accessions were differentiated from more Western accessions, while cultivated apricots were differentiated from wild apricots. An approximate Bayesian approach indicated that apricots likely underwent two independent domestication events, with bottlenecks, from the same wild population. Central Asian native apricots exhibited genetic subdivision and high frequency of resistance to sharka. Altogether, our results contribute to the understanding of the domestication history of cultivated apricot and point to valuable genetic diversity in the extant genetic resources of wild apricots.

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“…Some of these natural sources of resistance to PPV in apricot were first identified in North America [15] and since then have been widely exploited in breeding programs [16,17]. There are different propositions about the genetic control of resistance to PPV in apricot, involving one, two or three genes [8,18].…”

Section: Introductionmentioning

confidence: 99%

Apricot Breeding at the Faculty of Horticulture in Lednice

Krška

Vachůn

2016

Agronomy

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Abstract:The aim of the apricot-breeding program in the Horticultural Faculty in Lednice, that has been developed since 1981, is to obtain new adaptable cultivars, which combine most of the valuable biological traits. Standard breeding techniques, such as crossing by emasculation and hand pollination, self-pollination and open pollination, were employed. A total of 1.154 crossings were produced from more than 110 different parents. So far more than 20,000 seedlings have been obtained, of which about 13,000 have already been evaluated. The most interesting selections were grafted and planted in trial orchards (we now have more than 650 elite genotypes). Ten of these have already been registered, and further promising new hybrids have been submitted for registration and law right protection (Betinka, Candela, Sophia and Adriana). The basic prerequisite for the initiation of the breeding program was a large collection of genetic resources, established and gradually supplemented since the 1970s. At the present time, we preserve and manage more than 300 accessions of apricot trees. In the frame of the descriptive work of the genetic resources and in order to use in breeding, a collection of apricots has been evaluated. We selected the genotypes and characters relating to an increased level of adaptation to the environment.

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Selecting with markers linked to the PPVres major QTL is not sufficient to predict resistance to Plum Pox Virus (PPV) in apricot

Cited by 34 publications

References 21 publications

Evaluation of Turkish apricot germplasm using SSR markers: Genetic diversity assessment and search for Plum pox virus resistance alleles

Evaluation of Turkish apricot germplasm using SSR markers: Genetic diversity assessment and search for Plum pox virus resistance alleles

New insights into the history of domesticated and wild apricots and its contribution to Plum pox virus resistance

Apricot Breeding at the Faculty of Horticulture in Lednice

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