4.4 Review

Back to the future: Using ancient Bere barley landraces for a sustainable future

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Summary: Future crops need to be sustainable in the face of climate change. Modern barley varieties have suffered genetic erosion, losing genetic diversity and becoming vulnerable to climate change. Utilizing diversity in landrace populations, combined with information about local environmental and climatic conditions, allows targeted selection of key traits and genotypes, enabling crop production in marginal soils. Genomics technologies and big data can be used to support sustainable agriculture through germplasm development from landrace collections.

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The evolutionary relationship between bere barley and other types of cultivated barley

Konstantina Drosou et al.

Summary: This study used genotyping-by-sequencing to investigate the evolutionary history of bere, the oldest cultivated barley variety in Britain and possibly in Europe. The results showed that bere can be genetically categorized into two distinct groups, one of which has a close genetic affiliation with Scandinavian barley and the other represents a more recent introduction from central Europe. The findings emphasize the uniqueness of bere barley and its significance as a heritage crop.

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Evaluating Variation in Germination and Growth of Landraces of Barley (Hordeum vulgare L.) Under Salinity Stress

Jonathan E. Cope et al.

Summary: Climate change is causing increased salinity in soil, rising saline groundwater, and droughts, which lead to salinity stress in crops like barley. Landraces of barley, particularly Scottish Bere lines, show potential tolerance to salinity stress. The study analyzed 140 heritage cultivars and landrace lines of barley and found that most lines showed increased germination time and decreased shoot biomass and early root growth under salinity stress. Elite cultivars had a stronger response to salinity compared to landrace lines. One specific line, Bere 49 A 27 Shetland, showed high salinity tolerance in all experiments. Genome Wide Association Screening identified genomic regions associated with salinity tolerance. Promising candidate genes were identified within these regions. Further analysis and field trials are needed to identify targets for future breeding for salinity tolerance.

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Identifying potential novel resistance to the foliar disease 'Scald' (Rhynchosporium commune) in a population of Scottish Bere barley landrace (Hordeum vulgare L.)

Jonathan E. Cope et al.

Summary: Barley 'Scald' is a fungal disease causing significant economic losses in the UK barley industries. This study identified potential sources of resistance in Scottish Bere barley, with three lines consistently showing reduced infection levels. Genome-wide association analysis revealed new genetic regions with promising candidate genes for future disease-resistant breeding targets.

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Daniela Marone et al.

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The nutritional properties of flours derived from Orkney grown bere barley (Hordeum vulgare L.)

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