Crop wild relatives as genetic resources – the case of the European wild grape

2015 ◽  
Vol 95 (5) ◽  
pp. 905-912 ◽  
Author(s):  
Stephan Schröder ◽  
Andreas Kortekamp ◽  
Ernst Heene ◽  
Joachim Daumann ◽  
Ioana Valea ◽  
...  
Keyword(s):  
Genetic Resources ◽  
Genetic Resource ◽  
Resistance Breeding ◽  
Plasmopara Viticola ◽  
Crop Wild Relatives ◽  
Wild Relatives ◽  
Vitis Vinifera L ◽  
Guignardia Bidwellii ◽  
Wild Grape ◽  
Wild Grapevine

Schröder, S., Kortekamp, A., Heene, E., Daumann, J., Valea, I. and Nick, P. 2015. Crop wild relatives as genetic resources – the case of the European wild grape. Can. J. Plant Sci. 95: 905–912. Vitis vinifera L. ssp. sylvestris (Gmelin) Hegi, the European Wild Grape and ancestor of cultivated grapevine varieties (V. vinifera L. ssp. vinifera) is the sole wild grapevine species existing in Europe. This important crop wild relative (CWR) species is almost extinct, and persists only in residual habitats. Since these habitats are close to vineyards, this CWR species is endangered by hybridisation with its descendant crop and naturalised rootstocks that originate from viticulture. For this reason, we addressed two questions: To what extent have the remaining South German European Wild Grape accessions escaped hybridisation and preserved genetic identity? Second, what is the potential of this CWR species as a genetic resource for breeding in relation to several grapevine diseases? Using a set of highly resolving genetic markers, we were able to exclude introgression of autochthonous sylvestris accessions by cultivated grapevine. However, we detected introgression mostly from wild American species used as rootstocks in viticulture. The autochthonous accessions can be grouped into clusters. Comparative inoculation studies with the grapevine pathogens powdery mildew (Erysiphe necator), downy mildew (Plasmopara viticola), and black rot (Guignardia bidwellii) revealed relatively high levels of resistance in some of the ssp. sylvestris accessions and represents a valuable genetic resource for resistance breeding.

scholarly journals Evaluation of breeding potential of wild grape originating from Armenia

2019 ◽  
Vol 15 ◽  
pp. 01006
Author(s):  
K. Margaryan ◽  
E. Maul ◽  
Z. Muradyan ◽  
A. Hovhannisyan ◽  
G. Melyan ◽  
...  
Keyword(s):  
Vitis Vinifera ◽  
Allelic Variation ◽  
Resistance Breeding ◽  
Crop Wild Relatives ◽  
Breeding Programs ◽  
Genetic Traits ◽  
Breeding Potential ◽  
Wild Grape ◽  
Wild Grapevine ◽  
The Future

Crop wild relatives provide a useful source of genetic variation and represent a large pool of genetic diversity for new allelic variation required in breeding programs. Armenia is an important center of origin both for cultivated Vitis vinifera ssp. sativa and wild Vitis vinifera ssp. sylvestris. Owing to recent prospection in Armenian woods and river floodplains many forms of wild grapevine were discovered and inventoried, which is an important prerequisite to unlock their breeding potential in the future. The fact that some genotypes of V. sylvestris can withstand the diseases is likely to be due to a more efficient basal immunity. The overall goal of the proposed research was to characterize the diversity of V. sylvestris from Armenia with respect to its capacity for stilbene biosynthesis, which might be exploited as genetic resource for resistance breeding. The realized research stimulates the recovery, characterization and preservation of wild grape germplasm, presently at risk of extinction. The recovery and characterization of wild genotypes will be the base of selection of genetic traits important in breeding programs for the generation of biotic and changing climate tolerant grapevine varieties and rootstocks, both necessary for the future of viticulture in Armenia and in Europe.

Genotyping of Vitis vinifera L. within the Slovak national collection of genetic resources

2014 ◽  
Vol 9 (8) ◽  
pp. 761-767
Author(s):  
Ivana Dokupilová ◽  
Daniele Migliaro ◽  
Daniel Mihálik ◽  
Manna Crespan ◽  
Ján Kraic
Keyword(s):  
Genetic Diversity ◽  
Vitis Vinifera ◽  
Genetic Resources ◽  
Genetic Variants ◽  
Genetic Resource ◽  
Vitis Vinifera L ◽  
Total Genetic Diversity ◽  
Unusual Phenomenon ◽  
Resource Collection

AbstractMicrosatellites were used as a very effective tool for genetic diversity analysis and characterization of 51 grapevine (Vitis vinifera L.) accessions from the national collection of genetic resources. Genetic diversity was relatively high, 8.91 alleles were detected per analysed microsatellite locus in average, and fifty-one accessions were distinguished into 45 groups. Distribution of recent Slovak cultivars across the dendrogram accented both their genetic diversity and the effectiveness of the national breeding program in maintaining genetic diversity and generating new genetic variants. Each cultivar was different from the others and twelve of them contained 77.6% of the total genetic diversity of the whole analysed set. Microsatellite patterns were also able to confirm parentage in selected Slovak cultivars. An unusual phenomenon of triallelism was also detected in one of the analysed accessions. The present study has initiated molecular characterization within the national grapevine genetic resource collection and their comparison with well-established international cultivars.

scholarly journals Conservation status and sustainable local use of crop and crop wild relative species in the Bistoon protected area / West of Iran

2012 ◽  
Vol 29 (2) ◽  
pp. 55-62 ◽  
Author(s):  
Reza Rostami ◽  
Korous Khoshbakht
Keyword(s):  
Food Security ◽  
Genetic Resources ◽  
Plant Species ◽  
Protected Area ◽  
Conservation Status ◽  
Crop Wild Relatives ◽  
Wild Relatives ◽  
Wild Relative ◽  
Crop Wild Relative ◽  
Local Use

Abstract Collecting information about crop wild relatives (CWRs) as vital genetic resources for food security is the first stage of monitoring them. In this study, which was conducted in a protected area, we surveyed the conservation status of CWR sand, and the interaction between the condition of these plants and their local use. From 338 plant species in the area, 179 crop wild relatives in 38 families were identified. None of them is threatened, but some endemic rare or vulnerable plants such as Alkanna frigida Boiss. could cause some anxiety. Among these species 19 species of CWRs have edible usage in this area. Harvesting the crop wild relatives from nature by the local people is seen as a conservative factor although this is not usually true of other species.

scholarly journals Genetic Diversity and Utilization of Cultivated Eggplant Germplasm in Varietal Improvement

Plants ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 1714
Author(s):  
Yusuff Oladosu ◽  
Mohd Y. Rafii ◽  
Fatai Arolu ◽  
Samuel Chibuike Chukwu ◽  
Monsuru Adekunle Salisu ◽  
...  
Keyword(s):  
Genetic Resources ◽  
Solanum Melongena ◽  
Crop Wild Relatives ◽  
Wild Relatives ◽  
Germplasm Resources ◽  
Biotic And Abiotic Stresses ◽  
Varietal Improvement ◽  
Disease Resistances ◽  
Solanaceae Family ◽  
Point Of Departure

Eggplant is the fifth economically most important vegetable in the Solanaceae family after tomato, potato, chili, and tobacco. Apart from the well-cultivated brinjal or aubergine eggplant (Solanum melongena L.), two other underutilized eggplant species, the African eggplant (S. macrocarpon L.) and the scarlet eggplant (S. aethiopicum L.), were also cultivated with local importance where the leaves and fruits are used for food and medicinal purposes. The major objectives of the eggplant breeding program are to improve fruit quality, increase yield performance through heterosis breeding, and introduce pest and disease resistances from wild relatives. Europe and Asia hold a wide collection of germplasm resources with significant potential for genetic improvement. While cultivated eggplant is susceptible to several fungi and bacteria, many wild relatives offer potential resistance to these pathogens. In this paper, we review the genetic resources and diversity of cultivated eggplant and its wild relatives. As a point of departure, we examine the economic importance, domestication, taxonomy characterization, and relationships of the crop and its wild relatives. The importance of evaluating and safeguarding wild relatives is highlighted, as crop wild relatives are highly underrepresented. A key section in this study is an overview dedicated to genetic resources, resistance to biotic and abiotic stresses, pre-breeding, and breeding for sustainable eggplant production.

scholarly journals SPECIES DIVERSITY OF THE VIR COLLECTION OF GRAIN LEGUME GENETIC RESOURCES AND ITS USE IN DOMESTIC BREEDING

2019 ◽  
Vol 180 (2) ◽  
pp. 109-123
Author(s):  
M. A. Vishnyakova ◽  
T. G. Aleksandrova ◽  
T. V. Buravtseva ◽  
M. O. Burlyaeva ◽  
G. P. Egorova ◽  
...  
Keyword(s):  
Species Diversity ◽  
Genetic Resources ◽  
Crop Wild Relatives ◽  
Grain Legumes ◽  
Wild Relatives ◽  
The State ◽  
Grain Legume ◽  
Small Scale ◽  
Gene Pools ◽  
Domestic Breeding

The world’s genebanks hold 7.5 million germplasm accessions of plant genetic resources (PGR). One of the qualitative characteristics of the PGR collections is the species diversity, in particular, the presence of crop wild relatives (CWR), which makes it possible to widen the use of gene pools in the breeding process. The collection of the Vavilov Institute (VIR) is one of the most diverse holdings in the number of plant species. A survey is provided here of the species diversity in VIR’s grain legume collection, and its use in domestic breeding practice is analyzed. Comparison of this diversity with the state of PGR exploitation in the world makes it possible to assess the prospects of more efficient utilization of gene pool potential, especially for species that are unjustifiably cultivated on a too small scale or even neglected as crops in this country. The VIR collection of grain legumes incorporates 196 species from 9 genera of the family Fabaceae. This number includes cultigens and CWR. The cultivars of 21 species of grain legumes listed in the State Register of Breeding Achievements (2018) are adapted to the soil and climate conditions of this country. However, the species diversity of the collection could be used more efficiently in domestic plant breeding and crop production. This concerns both underutilized crops in Russia (broad beans, lima beans and grass pea) and those whose adaptive potential is adjusted only to certain and limited areas of the Russian Federation (Tepary beans and Vigna spp.). It is also necessary to exploit more efficiently species of the wild flora, both for direct utilization as pastures, green manure or phytoremediation crops and for introgressive breeding and domestication (Vicia benghalensis L., V. narbonensis L., Lathyrus sylvestris L., Lupinus hartwegii Lindl., etc.). Incorporation of crop wild relatives into the breeding process is promising for crop improvement in a number of aspects: for example, to increase resistance to diseases, pests, abiotic stressors, etc.

scholarly journals Confirmation and fine mapping of the resistance locus Ren9 from the grapevine cultivar ‘Regent’

2020 ◽  
Author(s):  
Daniel Zendler ◽  
Reinhard Töpfer ◽  
Eva Zyprian
Keyword(s):  
Fine Mapping ◽  
Fungal Pathogens ◽  
Genetic Resource ◽  
Mapping Population ◽  
Resistance Breeding ◽  
Plasmopara Viticola ◽  
Cabernet Sauvignon ◽  
Chromosome 15 ◽  
Resistance Locus ◽  
Grapevine Cultivar

AbstractGrapevine (Vitis vinifera ssp. vinifera) is a major fruit crop with high economic importance. Due to its susceptibility towards fungal pathogens such as Erysiphe necator and Plasmopara viticola, the causal agents of powdery and downy mildew (PM, DM), grapevine growers annually face a major challenge in coping with shortfall of yield caused by these diseases. Here we report the confirmation of a genetic resource for grapevine resistance breeding against PM. During the delimitation process of Ren3 on chromosome 15 from the cultivar ‘Regent’, a second resistance-encoding region on chromosome 15 termed Ren9 was characterized. It mediates a trailing necrosis associated with the appressoria of E. necator and restricts pathogen growth. In this study, we confirm this QTL in a related mapping population of ‘Regent’ x ‘Cabernet Sauvignon’. The data show that this locus is located at the upper arm of chromosome 15 between markers GF15-58 (0.15 Mb) and GF15-53 (4 Mb). The efficiency of the resistance against one of the prominent European PM isolates (EU-B) is demonstrated. Based on fine-mapping and literature knowledge we propose two possible regions of interest and supply genetic markers to follow both regions in marker assisted selection.

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