scholarly journals Population genetic structure analysis in endangered Hordeum vulgare landraces from Tunisia: Conservation strategies

2011 ◽  
Vol 10 (51) ◽  
pp. 10344-10351 ◽  
Author(s):  
Zoghlami Neacute jia ◽  
Bouagila Aida ◽  
Lamine Myriame ◽  
Hajri Haifa ◽  
Ghorbel Abdelwahed
Keyword(s):  
Genetic Structure ◽  
Hordeum Vulgare ◽  
Structure Analysis ◽  
Population Genetic Structure ◽  
Population Genetic ◽  
Conservation Strategies

scholarly journals Association Mapping for Yield Attributing Traits and Yellow Mosaic Disease Resistance in Mung Bean [Vigna radiata (L.) Wilczek]

2022 ◽  
Vol 12 ◽  
Author(s):  
Versha Rohilla ◽  
Rajesh Kumar Yadav ◽  
Atman Poonia ◽  
Ravika Sheoran ◽  
Gita Kumari ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Genetic Structure ◽  
Association Mapping ◽  
Structure Analysis ◽  
Population Genetic Structure ◽  
Vigna Radiata ◽  
Mung Bean ◽  
Population Genetic ◽  
Mosaic Disease ◽  
Yellow Mosaic Disease

Mung bean [Vigna radiata (L.) Wilczek] is an important short-duration grain legume widely known for its nutritional, soil ameliorative, and cropping system intensification properties. This study aims at evaluating genetic diversity among mung bean genotypes and detecting genomic regions associated with various yield attributing traits and yellow mosaic disease (YMD) resistance by association mapping. A panel of 80 cultivars and advanced breeding lines was evaluated for 10 yield-related and YMD resistance traits during kharif (monsoon) and summer seasons of 2018–2019 and 2019–2020. A total of 164 genome-wide simple sequence repeat (SSR) markers were initially screened, out of which 89 were found polymorphic which generated 317 polymorphic alleles with an average of 3.56 alleles per SSR locus. The number of alleles at each locus varied from 2 to 7. The population genetic structure analysis grouped different genotypes in three major clusters and three genetically distinct subpopulations (SPs) (i.e., SP-1, SP-2, and SP-3) with one admixture subpopulation (SP-4). Both cluster and population genetic structure analysis categorized the advanced mung bean genotypes in a single group/SP and the released varieties in other groups/SPs, suggesting that the studied genotypes may have common ancestral history at some level. The population genetic structure was also in agreement with the genetic diversity analysis. The estimate of the average degree of linkage disequilibrium (LD) present at the genome level in 80 mung bean genotypes unveiled significant LD blocks. Over the four seasons, 10 marker-trait associations were observed significant for YMD and four seed yield (SY)-related traits viz., days to flowering, days to maturity, plant height, and number of pods per plant using the mixed linear model (MLM) method. These associations may be useful for marker-assisted mung bean yield improvement programs and YMD resistance.

Defining conservation units in a rich and fragmented flora: implications for the management of genetic resources and evolutionary processes in south-west Australian plants

2000 ◽  
Vol 48 (3) ◽  
pp. 329 ◽  
Author(s):  
David J. Coates
Keyword(s):  
Genetic Structure ◽  
Species Diversity ◽  
Population Genetic Structure ◽  
Population Genetic ◽  
Conservation Strategies ◽  
The South ◽  
Conservation Units ◽  
Ecological Processes ◽  
South West ◽  
Australian Flora

The south-west Australian flora shows a diverse array of evolutionary patterns and exceptionally high species diversity. A significant component of this flora consists of relictual species which often have naturally fragmented and geographically restricted distributions. Many of these species appear to apportion significant levels of genetic diversity among populations. Diversity at both the population and species level presents a major challenge to the development of appropriate conservation strategies for this flora. To be effective these strategies should not only aim to preserve current levels of species diversity, but also consider intraspecific variation and the evolutionary and ecological processes associated with the generation and maintenance of that variation. The identification and characterisation of conservation units, based on population genetic structure and phylogeographic patterns within species, provide a useful basis upon which more general conservation principals can be developed for the maintenance of these processes. Population genetic structure and phylogeographic studies are used to show how conservation units can be identified in Lambertia orbifolia, Acacia anomala, Stylidium coroniforme, Stylidium nungarinense and Banksia cuneata, and taxa from a range of other genera. Determining conservation units in these taxa defines not only suitable units for their conservation but also the appropriate geographical scale for management. These findings indicate the potential this approach can have in determining strategies and priorities for the conservation of the south-west Australian flora.

scholarly journals Retraction: Population genetic structure analysis of Sclerotina sclerotiorum (Lib.) de Bary from different host plant species in northern Iran. Hossein B, Seyed AD, Seyed AR. Arch Biol Sci. 2013;65(1)171-81. DOI:10.2298/ABS1301171B

2016 ◽  
Vol 68 (3) ◽  
pp. 689-689
Author(s):  
E Editorial
Keyword(s):  
Genetic Structure ◽  
Host Plant ◽  
Plant Species ◽  
Structure Analysis ◽  
Sclerotinia Sclerotiorum ◽  
Population Genetic Structure ◽  
Population Genetic ◽  
Morphological Characteristics ◽  
Northern Iran ◽  
Host Plant Species

The article: Population genetic structure analysis of Sclerotina sclerotiorum (Lib.) de Bary from different host plant species in northern Iran. Hossein B, Seyed AD, Seyed AR. Arch Biol Sci. 2013;65(1) 171-81. DOI:10.2298/ABS1301171B, repeats data already published in: Genetic and morphological diversities in Sclerotinia sclerotiorum isolates in northern parts of Iran. Barari H, Alavi V, Badalyan SM. World App Sci J. 2010;8(3)326-33, and published in: Study of genetic variations based on the morphological characteristics, within the population of Sclerotinia sclerotiorum from the major oilseed planting areas in Iran. Barari H, Alavi V. Int J Biol. 2011;3(2)61-6, without any referencing. <br><br><font color="red"><b> Link to the retracted article <u><a href="http://dx.doi.org/10.2298/ABS1301171B">10.2298/ABS1301171B</a></b></u>

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