Temporal trends of genetic diversity in European barley cultivars (Hordeum vulgare L.)

Malysheva-Otto, Lyudmyla V.; Ganal, Martin W.; Law, John; Reeves, J. C.; Röder, Marion S.

doi:10.1007/s11032-007-9093-y

Cited by 53 publications

(47 citation statements)

References 33 publications

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“…Results from published studies vary considerably. Some studies showed a decrease in diversity over time (Russell et al 2000;Fu et al 2003;Reif et al 2005;Figliuolo et al 2007;Malysheva-Otto et al 2007,), while others observed increases (Fu 2006;White et al 2008) or a decrease in the diversity levels after which an increase occurred (Roussel et al 2004;Qi et al 2006). Our findings are consistent with the work of Le Clerc et al (2006) analysing changes in the pea germplasm genetic diversity through time.…”

Section: Breeding and Genetic Diversitysupporting

confidence: 91%

“…As farmers and agricultural scientists continue to focus on the world's ever-increasing food requirements, conservation of genetic diversity will play a crucial role in the development of new varieties and in meeting new environmental challenges (Esquinas-Alcázar 2005). Since the genetic diversity of a crop can change over time, the studies were devoted to comparisons of the overall genetic diversity either at temporal or spatial stratification (Russell et al 2000;Le Clerc et al 2005Figliuolo et al 2007;Hysing et al 2008;Malysheva-Otto et al 2007;van de Wouw et al 2009van de Wouw et al , 2010, mostly with no clear general results.…”

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confidence: 99%

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Molecular analysis of temporal genetic structuring in pea (Pisum sativum L.) cultivars bred in the Czech Republic and in former Czechoslovakia since the mid-20th century

Cieslarová¹,

Hýbl²,

Griga³

et al. 2012

Czech J. Genet. Plant Breed.

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Changes in genetic diversity of peas bred in the Czech Republic and in former Czechoslovakia since the mid-20 th century were analysed using 38 molecular marker loci, including retrotransposons and microsatellites, differentiating a total of 84 alleles. Both marker types were comparably effective in revealing the genetic diversity, with a high correlation (r = 0.81), although the pairwise genetic distances of each marker type differed. In total, 175 accessions, selected from the Czech pea gene bank collection and representing the pea cultivars collected or bred in the country, were divided into three groups according to their date of sampling or variety registration. The first group contained 70 old cultivars and landraces collected prior to 1961. The second group contained 46 cultivars released from 1961 to 1980. The third group contained 59 cultivars released between 1981 and 2004. In spite of the decline in several diversity measures, differences in allele frequencies and even allele loss in three microsatellite loci were recorded over the 70-year period, while these differences between the groups were not statistically significant. In addition, genetic heterogeneity was detected in 29 accessions (15%). This indicates that although no genetic erosion could be observed since then, it is important to monitor the genetic diversity, furthermore it highlights the vital role of germplasm collections for the crop diversity conservation.

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Section: Breeding and Genetic Diversitysupporting

confidence: 91%

mentioning

confidence: 99%

Molecular analysis of temporal genetic structuring in pea (Pisum sativum L.) cultivars bred in the Czech Republic and in former Czechoslovakia since the mid-20th century

Cieslarová¹,

Hýbl²,

Griga³

et al. 2012

Czech J. Genet. Plant Breed.

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“…The drawback of using landraces such as 'Oslo' or 'Sort Glatstakket' in breeding programmes is the risk of transferring unwanted genetic material, and disturbing established allele complexes in the optimized germplasm. Nevertheless, introduction of germplasm from exotic accessions can be advantageous in widening the genetic base of crops (Brantestam et al, 2007;Malysheva-Otto et al, 2007;Russell et al, 2000) as traditionally performed in breeding for disease resistance. Here traits have successfully been transferred to elite cultivars to achieve resistance (Colton et al, 2006;Czembor, 2000;Silvar et al, 2013).…”

Section: Identification Of High Yielding and Stable Accessionsmentioning

confidence: 99%

Significant decrease in yield under future climate conditions: Stability and production of 138 spring barley accessions

Ingvordsen

Backes

Lyngkjær

et al. 2015

European Journal of Agronomy

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a b s t r a c tThe response in production parameters to projected future levels of temperature, atmospheric carbon dioxide ([CO 2 ]), and ozone ([O 3 ]) was investigated in 138 spring barley accessions. The comprehensive set of landraces, cultivars, and breeder-lines, were during their entire life cycle exposed to a two-factor treatment of combined elevated temperature (+5• C day/night) and [CO 2 ] (700 ppm), as well as single-factor treatments of elevated temperature (+5• C day/night), [CO 2 ] (700 ppm), and [O 3 ] (100-150 ppb). The control treatment was equivalent to present average South Scandinavian climate (temperature: 19/12• C (day/night), [CO 2 ]: 385 ppm). Overall grain yield was found to decrease 29% in the two-factor treatment with concurrent elevation of [CO 2 ] and temperature, and this response could not be predicted from the results of treatments with elevated [CO 2 ] and temperature as single factors, where grain yield increased 16% and decreased 56%, respectively. Elevated [O 3 ] was found to decrease grain yield by 15%. Substantial variation in response to the applied climate treatments was found between the accessions. The results revealed landraces, cultivars, and breeder-lines with phenotypes applicable for breeding towards stable and high yield under future climate conditions. Further, we suggest identifying resources for breeding under multifactor climate conditions, as single-factor treatments did not accurately forecast the response, when factors were combined.

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“…The low number of markers might underestimate the variability within the collection. SSRs are hypervariable DNA markers that have been used extensively for identifying cultivars or accessions and in diversity studies (Koebner et al 2003;Sjakste et al 2003;Malysheva-Otto et al 2007), for linkage mapping (Chen et al 2007), and in population genetics and ecology studies (Turpeinen et al 2001;Maestri et al 2002;Matus and Hayes 2002). They offer a number of advantages, such as a high level of polymorphism, locus specificity, codominance and reproducibility, and random distribution throughout the genome (Rafalski and Tingey 1993;Powell et al 1996).…”

Section: Introductionmentioning

confidence: 99%

Analysis of Diversity in Chinese Cultivated Barley with Simple Sequence Repeats: Differences Between Eco-Geographic Populations

Chen

Vallés

et al. 2009

Biochem Genet

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The genetic diversity of 116 barley accessions, representing five Chinese eco-geographic populations, was studied using simple sequence repeat (SSR) markers. The 21 SSR loci revealed 128 alleles with an average of 6.1 alleles per locus. The highest values of proportion of polymorphic loci (P) and gene diversity index (He) were obtained in the Northern (P = 1.00; He = 0.60) and the Yangtze River reaches and Southern populations (P = 1.00; He = 0.59). The lowest values were in the populations of the Yellow River reaches (P = 0.86; He = 0.44). The highest average number of alleles per locus (4.52) and number of unique alleles (7) were found in the Qinghai-Tibet plateau population. Cluster analysis revealed that together with the row type, strong eco-geographic variables influenced the classification. Associations of SSR and eco-geographic values were established for 11 SSR loci. Four to six markers were found to discriminate among geographic groups, which may serve as tools for diagnosis of the eco-geographic populations and provide evidence for the adaptive nature of SSR markers.

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Temporal trends of genetic diversity in European barley cultivars (Hordeum vulgare L.)

Cited by 53 publications

References 33 publications

Molecular analysis of temporal genetic structuring in pea (Pisum sativum L.) cultivars bred in the Czech Republic and in former Czechoslovakia since the mid-20th century

Molecular analysis of temporal genetic structuring in pea (Pisum sativum L.) cultivars bred in the Czech Republic and in former Czechoslovakia since the mid-20th century

Significant decrease in yield under future climate conditions: Stability and production of 138 spring barley accessions

Analysis of Diversity in Chinese Cultivated Barley with Simple Sequence Repeats: Differences Between Eco-Geographic Populations

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