Genetic diversity and population structure in Malus sieversii, a wild progenitor species of domesticated apple

  title={Genetic diversity and population structure in Malus sieversii, a wild progenitor species of domesticated apple},
  author={Christopher M. Richards and Gayle M. Volk and Ann A. Reilley and Adam D. Henk and Dale R. Lockwood and Patrick A. Reeves and Philip L. Forsline},
  journal={Tree Genetics \& Genomes},
Malus sieversii (Lebed.) M. Roem. is a wild progenitor species of the domesticated apple. It is found across a mountainous region of central Asia and has been the focus of several collection expeditions by the USDA-ARS-National Plant Germplasm System. This study used microsatellite variation at seven loci to estimate diversity and differentiation within M. sieversii using several complimentary approaches. Multilocus genotypes were amplified from 949 individuals representing seedling trees from… 
Genetic Diversity and Population Structure of Seedling Populations of Pyrus pashia
Analysis of molecular variation indicated that the major variation occurred within families and that the minimum partitions of genetic variation exist among families, representing 89.14 and 10.86 % of the total variety, respectively.
Molecular-genetic analysis of Malus sieversii – comparison of Dzungarian populations in situ and ex situ
A high genetic diversity of various clones and samples of Sievers apple tree of the Dzungarian populations is revealed and there is an active information exchange between the populations.
Malus sieversii: A Diverse Central Asian Apple Species in the USDA-ARS National Plant Germplasm System
The gene pools that comprise the accessions within the NPGS Central Asian Malus collection are highly overlapping with respect to both phenotypic traits and genotypic characters, suggesting that this region is a center of origin for the domesticated apple.
Genetic diversity and population structure analysis of wild Malus genotypes including the crabapples (M. baccata (L.) Borkh. & M. sikkimensis (Wenzig) Koehne ex C. Schneider) collected from the Indian Himalayan region using microsatellite markers
The existing high degree of genetic diversity among the studied wild apple genotypes could be the valuable genetic resource for the apple improvement programmes.
Variation in Microsatellite Loci Reveals a Natural Boundary of Genetic Differentiation among Pyrus betulaefolia Populations in Northern China
Thirteen simple sequence repeat loci were detected to infer the genetic composition of 18 P. betulaefolia populations in northern China, and a distinct pattern appeared to be obscured by pollen-mediated gene flow in the distribution of nuclear microsatellite variation.
Geographic patterns of genetic variation and population structure in Pinus aristata, Rocky Mountain bristlecone pine
Pinus aristata Engelm., Rocky Mountain bristlecone pine, has a narrow core geographic and elevational distribution, occurs in disjunct populations, and is threatened by rapid climate change, white
Genetic diversity and structure of local apple cultivars from Northeastern Spain assessed by microsatellite markers
The results highlight that the genetic diversity encompassed by currently cultivated apple accounts only for a small fraction of that existing within the species, and that an important part of the local material analyzed constitutes a good example of genetic distinctness with respect to the main cultivars used in European orchards.
A comprehensive approach toward conserving Malus germplasm
The USDA-National Plant Germplasm System apple (Malus) collection has traditionally been conserved by maintaining orchards in Geneva, NY and cryopreserving dormant buds of clones. The orchard Malus
Population Genetics Reveals That the Western Tianshan Mountains Populations of Agrilus mali (Coleoptera: Buprestidae) May Have Not been Recently Introduced
The results suggest that A. mali in the western Tianshan region has possibly been present in the area for a long period, and may not have been introduced recently, and highly frequent gene flows within Tianjin populations are possibly caused by human activities and may enhance the adaptability of A.mali along the westernTianshan Mountains, leading to periodic outbreaks.


Partitioning of Allozyme Diversity in Wild Populations of Malus sieversii L. and Implications for Germplasm Collection
Results suggest that plants belonging to M. sieversii effectively form a panmictic population, and a thorough sampling of a few large populations will efficiently capture most of the genetic diversity present in wild M. Sieversii.
Microsatellite (SSR) markers reveal genetic identities, genetic diversity and relationships in a Malus×domestica borkh. core subset collection
These SSR markers show great promise as tools for managing Malus ex situ germplasm collections as well as for collection and preservation strategies concerning wild Malus populations in situ.
Genetic Diversity and Disease Resistance of Wild Malus orientalis from Turkey and Southern Russia
Wild populations of M. orientalis from regions around the Black Sea are genetically distinguishable and show high levels of diversity, and disease resistance is described for 496 seedlings collected in southern Russia and Turkey in 1998 and 1999.
Genetic diversity in a collection of ancient cultivars of apple (Malus × domestica Borkh.) as revealed by SSR-based fingerprinting
A collection of 48 accessions of Malus domestica Borkh from the apple germplasm repository of the Campania Region in Italy was screened together with eight ancient well-known cultivars, used to determine genetic identities, estimate genetic diversity and to identify genetic relationships between the accessions.
Microsatellite (SSR) variation in a collection of Malus (apple) species and hybrids
The detection of identical accessions in the collection, which were previously considered to be unique, highlights the critical need to further bolster collections of certain Malus species.
Ex Situ Conservation of Vegetatively Propagated Species: Development of a Seed-based Core Collection for Malus sieversii
Seeds and scionwood of Malus sieversii Lebed. have been collected from wild populations of apple trees in Kazakhstan. Seedlings and grafted trees were planted in the orchards at the U.S. Dept. of
Chloroplast diversity in the genus Malus: new insights into the relationship between the European wild apple (Malus sylvestris (L.) Mill.) and the domesticated apple (Malus domestica Borkh.)
To unravel the relationship between the European wild apple, Malus sylvestris (L.) Mill., and its domesticated relative M. domestica Borkh., we studied chloroplast DNA variation in 634 wild and 422
High level of genetic differentiation for allelic richness among populations of the argan tree [Argania spinosa (L.) Skeels] endemic to Morocco
It is shown that the measure of subdivision, θST, obtained when allelic richness is used in place ofh (Nei's index of diversity), is much larger than the FST, which suggests that rare alleles have a more scattered distribution than more frequent ones.
Morphology and microsatellites in Spanish apple collections
The fingerprints indicated that the famous triploid Dutch cultivar ‘Belle de Boskoop’ may be derived from an unreduced gamete of ‘Reinette de Caux’, an unexploited resource for breeding programmes.
Genetic variation in the endangered wild apple (Malus sylvestris (L.) Mill.) in Belgium as revealed by amplified fragment length polymorphism and microsatellite markers
Gene flow between wild and cultivated gene pools is shown to be almost absent, with only three genotypes that showed evidence of admixture between the wild and edible cultivar gene pools.