Morphological and genetic characterization of barley (Hordeum vulgare L.) landraces in the Canary Islands

Hagenblad, Jenny; Leino, Matti W.; Afonso, Guacimara Hernández; Morales, D. Afonso

doi:10.1007/s10722-018-0726-2

Cited by 21 publications

(21 citation statements)

References 26 publications

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“…Islands are natural laboratories for the study of the evolution and ecology of wild plants and endemisms [2][3][4]. Therefore, due to their isolation and special environmental features, islands are also considered as sites of special interest to prospect and conserve plant genetic resources [5,6]. The Greek archipelago includes ca.…”

Section: Introductionmentioning

confidence: 99%

Multi-Level Characterization of Eggplant Accessions from Greek Islands and the Mainland Contributes to the Enhancement and Conservation of this Germplasm and Reveals a Large Diversity and Signatures of Differentiation between both Origins

et al. 2019

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Crop landraces are found in many inhabited islands of Greece. Due to the particularity of environment and isolation from the mainland, Greek islands represent a natural laboratory for comparing the diversity of landraces from the islands with those of the Greek mainland. A collection of 36 Greek eggplant landraces and traditional cultivars from the mainland and the islands has been phenotypically and genetically characterized using 22 morphological descriptors and 5 SSR markers. The mineral composition (K, Mg, Cu, Fe, Mn, Zn) of fruits was also determined. The objectives of this study include the multi-level characterization of eggplant local landraces and the comparison of diversity among accessions from the Greek mainland and the islands. Characterization of eggplant landraces will contribute to the enhancement and prevention of genetic erosion in this local group and will provide a resource for future investigation and breeding. PCA analysis of morphological traits explained 45.4% of the total variance revealing the formation of two clusters, one with most of the island accessions, and another with most of the mainland ones. The SSR markers used exhibited high average values for the number of alleles/locus (4.6), expected heterozygosity (0.60) and PIC (0.55), while the observed heterozygosity was low (0.13). Both STRUCTURE and PCoA analyses based on SSR data revealed two genetic clusters, one made up mainly by the mainland accessions, while the other one was mainly made up by the island accessions. Although there was considerable variation among the landraces for the concentration of minerals studied, only average Mg concentration was significantly different between mainland and island accessions. Based on our data, the Greek eggplant landraces present considerable morphological and genetic diversity with some differentiation signatures between the island and the mainland accessions. Our results have

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Section: Introductionmentioning

confidence: 99%

Multi-Level Characterization of Eggplant Accessions from Greek Islands and the Mainland Contributes to the Enhancement and Conservation of this Germplasm and Reveals a Large Diversity and Signatures of Differentiation between both Origins

et al. 2019

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“…Forty five barley samples were analyzed, 42 were ancient landraces from the Canary Islands, and three were commercial ones used as control. Data about island of origin, spike density, number of rows, aleurone layer color, and length of vegetative cycle are shown in Table 1 (Hagenblad et al., 2019). Most of the barley samples were of six rows, and only four (two landraces and two commercial samples barley) were of two rows.…”

Section: Methodsmentioning

confidence: 99%

“…The molecular studies carried out using single nucleotide polymorphism concluded that their genetics have remained intact for the last 900 years (Leino, Hagenblad, Edqvist, & Strese, 2009), which gives an idea of the invaluable legacy that these landraces provide. However, the production of this cereal in the Canary archipelago has markedly decreased in the first two decades of the 21st century, which put these ancient landraces at serious risk, not only for the loss of this genetic heritage but also because of the disappearance of the landscapes associated with this crop (Hagenblad et al., 2019). Knowledge of the nutritional profile of traditional barley landraces of the Canary Islands is a good way to increase the value of this genetic heritage, and thereby encouraging its use and promotion.…”

Section: Introductionmentioning

confidence: 99%

The chemical composition of barley grain (Hordeum vulgare L.) landraces from the Canary Islands

Panizo-Casado

Déniz-Expósito²,

Rodríguez-Galdón

et al. 2020

Journal of Food Science

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The proximate composition, total phenolics, antioxidant activity, minerals, and trace elements were determined in 42 barley landraces in order to highlight their nutritional potential and promote their cultivation. Two‐row barley landraces had a higher average content of starch, protein, total phenolic compounds, and iron, when compared with six‐row ones that presented higher mean ash and fiber concentrations. Additionally, the six‐row barley landraces with strongly pigmented grains had lower zinc and manganese and higher protein mean concentrations than the whitish or lightly pigmented barley landraces. Factor analysis and linear discriminant analysis were used to correctly differentiate samples according to type of barley (landrace or commercial) and number of rows. In general, all the parameters varied considerably among the barley landraces analyzed, but some barley landraces could be emphasized according to fiber, minerals, and phenolic antioxidants. There were important differences in the mean values in all the chemical parameters according to the island of origin of the barley grains. The application of linear discriminant analysis was also a useful tool to differentiate all the barley landraces with six rows according to the island of origin. Practical Application Barley is a versatile cereal that can be used for human and animal feed, brewing, and as biodiesel. From the nutritional point of view, barley is rich in starch, protein, dietary fiber and minerals, as well as antioxidant compounds and vitamins. The landraces analyzed in this study have remained intact for the last 900 years, which gives opportunity to genome of these barley landraces to evolve some very specific traits. The physicochemical characterization of these local landraces carried out by us could be very useful as a source of new quality in breeding programs.

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“…1 Map of the studied area. Geography of the Canary Islands and location of the Canary archipelago (inset) Hagenblad et al 2019). The period when this isolation arose on the archipelago is not known.…”

Section: Barley Cultivation In Hispanic Timesmentioning

confidence: 99%

An Evolutionary Approach to the History of Barley (Hordeum vulgare) Cultivation in the Canary Islands

Hagenblad

Morales

2020

Afr Archaeol Rev

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The Canary Islands are an archipelago that lies about 100 km west of North Africa. Barley (Hordeum vulgare) has been continuously cultivated since the colonization of the islands. To investigate the agricultural history of the islands, the DNA from multiple individuals of six extant landraces of barley was sequenced, and the resulting data were analyzed with ABC modeling. Estimates of separation times of barley populations on the different islands and the mainland were congruent with archaeological dating of the earliest settlements on the islands. The results of the genetic analyses were consistent with the continuous cultivation of barley on Lanzarote island since it was first colonized, but suggested cultivation was carried out at a smaller scale than on Gran Canaria and Tenerife. Contrary to archaeological evidence and early written historical sources, the genetic analyses suggest that barley was cultivated on a larger scale on Tenerife than on Gran Canaria. The genetic analysis of contemporary barley added support to the dating of the colonization of the islands and pointed to the need for more archaeological data concerning barley cultivation on Tenerife.

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Morphological and genetic characterization of barley (Hordeum vulgare L.) landraces in the Canary Islands

Cited by 21 publications

References 26 publications

Multi-Level Characterization of Eggplant Accessions from Greek Islands and the Mainland Contributes to the Enhancement and Conservation of this Germplasm and Reveals a Large Diversity and Signatures of Differentiation between both Origins

Multi-Level Characterization of Eggplant Accessions from Greek Islands and the Mainland Contributes to the Enhancement and Conservation of this Germplasm and Reveals a Large Diversity and Signatures of Differentiation between both Origins

The chemical composition of barley grain (Hordeum vulgare L.) landraces from the Canary Islands

An Evolutionary Approach to the History of Barley (Hordeum vulgare) Cultivation in the Canary Islands

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