A European
            <i>in situ</i>
            (on-farm) conservation and management strategy for landraces.

Negri, Valeria; Freudenthaler, P.; Gaši, Fuad; Maxted, Nigel; Moreira, Pedro Mendes; Strãjeru, S.; Tan, Ayfer; Veteläinen, Merja; Vogel, Ron; Weibull, Jens

doi:10.1079/9781780646138.0297

Cited by 14 publications

(19 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Landraces are mostly composed of genotypes that are homozygous and have signi cant genetic diversity. Therefore, they show wide genetic variation both in quantitative and qualitative characteristics (Negri et al 2009; Cebolla-Cornejo et al, 2013; Reddy et al, 2013). Genetic pro les of landraces are also quite different from modern cultivars (Sacco et al 2015).…”

Section: Introductionmentioning

confidence: 99%

RETRACTED: Screening Tomato (Lycopersicon esculentum Mill.) Landraces collected from Aegean-Mediterranean Region of Anatolia: Diversity in organic acid

KAYA

Erken

Kızılkaya

2023

Preprint

View full text Add to dashboard Cite

Tomato landraces can be a source for breeding new cultivars to improve the fruit quality in terms of organic acids. Number of 19 tomato landraces spreading along the Mediterranean coasts of Anatolia was evaluated to determine the basic internal quality parameters and organic acids. Fruit weight, diameter, length, pH, titrable acidty (TA%), soluble solid content (SSC%), SSC/TA ratio and organic acids including oxalic (OA), tartaric (TarA), malic (MA), malonoic (MalA), lactic (LA), acetic (AA), citric (CA) and ascorbic acids (AscA) were evaluated. High diversity was found for the traits among landraces. It was determined that within landraces the most abundant organic acid was citric acid. On the other hand, the highest and lowest values for CA were found in Ege 8 as 105.73 and TR62707 as 31.10 mg g− 1, respectively, which can be suggested as a promising source for future breeding programs. Ascorbic acid (AscA) was the lowest among total organic acids, which fell within the range of 0.06–0.12 mg.g− 1 (as 64–116 µg.g− 1). Furthermore, the highest and lowest malic acid content between tomato landraces was determined as 8.23 mg g− 1 in TR49646 and 5.11 mg g− 1 in Ege 6. The TR49646 landrace can be recommended as a source of high malic acid content. On the other hand, the lowest oxalic acid content was determined in the landrace TR63233 from a health point of view. Multidimensional scale analysis also confirmed the candidates that have been determined by the anova and one-way anom tests. Results showed that there was a high diversity among landraces and the identified traits could be useful in selection and breeding for improving new cultivars.

show abstract

Section: Introductionmentioning

confidence: 99%

RETRACTED: Screening Tomato (Lycopersicon esculentum Mill.) Landraces collected from Aegean-Mediterranean Region of Anatolia: Diversity in organic acid

KAYA

Erken

Kızılkaya

2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Solina d’Abruzzo is a local population of common wheat that has been cultivated for a very long time in an environment that, although restricted, has peculiar environmental and climatic variations. It is a case of long-term in situ conservation on-farm, able to drive microevolution of the crop under a dynamic management of its diversity [ 9 , 37 , 38 ]. Both natural and farmers-driven selective forces can, in fact, modulate adaptive, agronomic, and qualitative traits.…”

Section: Discussionmentioning

confidence: 99%

Long-Term In Situ Conservation Drove Microevolution of Solina d’Abruzzo Wheat on Adaptive, Agronomic and Qualitative Traits

Morcia

Flaviis

Terzi

et al. 2023

Plants

View full text Add to dashboard Cite

Solina is an example of a bread wheat landrace that has been conserved in situ for centuries in Central Italy. A core collection of Solina lines sampled in areas at different altitudes and climatic conditions was obtained and genotyped. A clustering analysis based on a wide SNP dataset generated from DArTseq analysis outlined the existence of two main groups, which, after Fst analysis, showed polymorphism in genes associated with vernalization and photoperiod response. Starting from the hypothesis that the different pedoclimatic environments in which Solina lines were conserved may have shaped the population, some phenotypic characteristics were studied in the Solina core collection. Growth habit, low-temperature resistance, allelic variations at major loci involved in vernalization response, and sensitivity to photoperiod were evaluated, together with seed morphologies, grain colour, and hardness. The two Solina groups showed different responses to low temperatures and to photoperiod-specific allelic variations as well as the different morphology and technological characteristics of the grain. In conclusion, the long-term in situ conservation of Solina in environments sited at different altitudes has had an impact on the evolution of this landrace which, despite its high genetic diversity, remains clearly identifiable and distinct so as to be included in conservation varieties.

show abstract

“…Research into food security should focus on all aspects of the human food chain but logically should start with ensuring stable production of highly nutritious and diverse crops (Dhankher and Foyer, 2018). However, in recent years industrial agriculture has focused on the cultivation of fewer genetically homogeneous crop varieties leading to a reduction in crop diversity (FAO, 2012) caused by fewer crops in cultivation, fewer cultivars of each crop and reduced genetic diversity within each cultivar (Negri et al, 2009). There are about 31,128 plant species which currently have documented uses, of which 5,538 are associated with direct food production and a further 5,338 have potential for adaptive allele donation (RBG Kew, 2016).…”

Section: Introduction Backgroundmentioning

confidence: 99%

“…The price paid for crop uniformity is that these homogeneous cultivars are vulnerable to new strains of diseases or pests, or extreme changes in the growing environment (Committee on Managing Global Resources, 1993;FAO, IFAD, UNICEF, WFP and WHO, 2017). The threat to overall crop diversity by the replacement of landraces by higher-yielding but genetically uniform cultivars is well established at a global level (Negri et al, 2009;FAO, 2010). While modern varieties usually outperform landraces under optimal conditions, landraces may still be competitive in marginal environments where modern cultivars lose their advantage or where there is an associated niche market to sustain production (Yahiaoui et al, 2014;Marone et al, 2021).…”

Section: Introduction Backgroundmentioning

confidence: 99%

Trends, challenges and opportunities in the in situ conservation of cereal landraces in Scottish islands

Martin

Shoemark

Scholten³

et al. 2023

GenResJ

View full text Add to dashboard Cite

Landraces are traditional crop varieties that often have special adaptations to the farming environment in which they have evolved and are therefore a valuable source of useful traits for plant breeders. In most agriculturally advanced countries, landraces of the main crops have generally been superseded by modern varieties. An exception to this in the United Kingdom is the cultivation on the Scottish archipelagos of Orkney, Shetland and the Outer Hebrides of three cereal landraces: bere, a 6-row barley (Hordeum vulgare), small oat (Avena strigosa) and Hebridean rye (Secale cereale). Our study focused on trends in their cultivation and use over the past 20 years. In the Outer Hebrides, a mixture of all three has continued to be grown on more than 200ha for feed because of its tolerance of nutrient-deficient sandy soils. Future cultivation is threatened, however, by damage from geese and deer, especially to fields used for seed production. In Orkney and Shetland, only bere and small oat are grown, and always as sole crops. The area of bere has increased in Orkney, from about 10ha in 2004 to almost 75ha in 2020 and has been driven by two supply chains producing bere for milling and malting. However, small oat in Orkney, and both small oat and, especially bere, in Shetland have been grown by very few farmers since 2018 and are at serious risk of being lost from cultivation. We discuss these results in the context of measures to support greater on-farm cultivation of these landraces.

show abstract

A European in situ (on-farm) conservation and management strategy for landraces.

Cited by 14 publications

References 0 publications

RETRACTED: Screening Tomato (Lycopersicon esculentum Mill.) Landraces collected from Aegean-Mediterranean Region of Anatolia: Diversity in organic acid

RETRACTED: Screening Tomato (Lycopersicon esculentum Mill.) Landraces collected from Aegean-Mediterranean Region of Anatolia: Diversity in organic acid

Long-Term In Situ Conservation Drove Microevolution of Solina d’Abruzzo Wheat on Adaptive, Agronomic and Qualitative Traits

Trends, challenges and opportunities in the in situ conservation of cereal landraces in Scottish islands

Contact Info

Product

Resources

About