Genetic Diversity and Population Structure of Collard Landraces and their Relationship to Other Brassica oleracea Crops

@article{Pelc2015GeneticDA,
  title={Genetic Diversity and Population Structure of Collard Landraces and their Relationship to Other Brassica oleracea Crops},
  author={Sandra E. Pelc and David M. Couillard and Zachary Stansell and Mark W. Farnham},
  journal={The Plant Genome},
  year={2015},
  volume={8}
}
Landraces have the potential to provide a reservoir of genetic diversity for crop improvement to combat the genetic erosion of the food supply. A landrace collection of the vitamin‐rich specialty crop collard (Brassica oleracea L. var. viridis) was genetically characterized to assess its potential for improving the diverse crop varieties of B. oleracea. We used the Illumina 60K Brassica SNP BeadChip array with 52,157 single nucleotide polymorphisms (SNPs) to (i) clarify the relationship of… Expand
Investigation of the Genetic Diversity and Quantitative Trait Loci Accounting for Important Agronomic and Seed Quality Traits in Brassica carinata
TLDR
Results would not only provide insights for genetic improvement of this species, but will also identify useful genetic variation hidden in the Cc subgenome of B. carinata to improve canola cultivars. Expand
Genotyping-by-sequencing of Brassica oleracea vegetables reveals unique phylogenetic patterns, population structure and domestication footprints
TLDR
The study identifies a large pool of genetic diversity within broccoli landraces that could be used to improve future breeding efforts and clarifies the population structure, phylogeny, and domestication footprints of landrace and improved B. oleracea broccoli using many genotyping-by-sequencing markers. Expand
The Evolutionary History of Wild, Domesticated, and Feral Brassica oleracea (Brassicaceae)
TLDR
The authors' analyses point to the Aegean endemic B. cretica as the closest living relative of cultivated B. oleracea, supporting an origin of cultivation in the Eastern Mediterranean region and several feral lineages, suggesting that cultivated plants of this species are able to revert to a wild-like state with relative ease. Expand
The Evolutionary History of Wild, Domesticated, and Feral Brassica oleracea (Brassicaceae)
TLDR
The authors' analyses point to the Aegean endemic B. cretica as the closest living relative of cultivated B. oleracea, supporting an origin of cultivation in the Eastern Mediterranean region and identifying several feral lineages, suggesting that cultivated plants of this species can revert to a wild-like state with relative ease. Expand
From landrace to modern hybrid broccoli: the genomic and morphological domestication syndrome within a diverse B. oleracea collection
TLDR
This work broadens the understanding of broccoli germplasm, informs conservation efforts, and enables breeding for complex quality traits and regionally adapted cultivars. Expand
Study of the genetic structure of a Brassica napus L. canola population derived from six interspecific crosses of B. napus × B. oleracea
TLDR
While comparing the two breeding methods for introgression of B. oleracea alleles, significantly greater loss of alleles occurred in the F2- derived population as compared with the BC1-derived population, suggesting that the knowledge from this study can be used for efficient introgressive of exotic alleles from B. Oleracea into B. napus for broadening the genetic base of this crop. Expand
The Bnapus50K array: a quick and versatile genotyping tool for Brassica napus genomic breeding and research
TLDR
The novel Bnapus50K DNA array developed in this study could prove to be a quick and versatile genotyping tool for B. napus genomic breeding and research. Expand
Opening the Treasure Chest: The Current Status of Research on Brassica oleracea and B. rapa Vegetables From ex situ Germplasm Collections
TLDR
This review covers recent reports on the utilization of germplasm material to isolate genotypes of Brassica oleracea and B. rapa vegetables, focusing on high nutrient use efficiency, accumulation of biologically active metabolites, pest resistance, and favorable phenotypic appearance. Expand
Bridging Sensory Evaluation and Consumer Research for Strategic Leafy Brassica (Brassica oleracea) Improvement.
TLDR
A standardized sensory lexicon is developed for kale and related leafy Brassicas, variation for texture and flavor in the authors' breeding program is identified, and a better understanding of consumer preferences is gained to guide future breeding efforts. Expand
Genetic components of consumer liking based on visual appearance of leaf types in Brassica vegetables
TLDR
The capacity of existing breeding materials to introduce novel leafy Brassica cultivars with market potential is demonstrated, highlighting the importance of parental selection in developing new genotypes to suit current consumer preferences and the use of next-generation sequencing to draw connections between genotypic diversity and consumer liking. Expand
...
1
2
...

References

SHOWING 1-10 OF 84 REFERENCES
Genetic diversity of traditional South American Landraces of Cassava (Manihot esculenta Crantz): an analysis using microsatellites
TLDR
The results showed that traditional landraces of sweet and bitter cassava form an important source of genetic diversity and merit more attention from managers of crop genetic resources. Expand
Genetic Variation among and within United States Collard Cultivars and Landraces as Determined by Randomly Amplified Polymorphic DNA Markers
TLDR
RAPD analysis identified collard landraces as unique genotypes and showed them to be sources of unique DNA markers, which should enhance diversity of the B. oleracea germplasm pool and provide genes for future crop improvement. Expand
Sub-genomic selection patterns as a signature of breeding in the allopolyploid Brassica napus genome
TLDR
Evidence is provided for strong selection of large chromosome regions associated with important rapeseed seed quality traits conferred by C-subgenome QTL, implying that an increase in genetic diversity and recombination within the C-genome is particularly important for breeding. Expand
Population genomic and genome-wide association studies of agroclimatic traits in sorghum
TLDR
This genome-wide map of SNP variation in sorghum provides a basis for crop improvement through marker-assisted breeding and genomic selection and traces the independent spread of multiple haplotypes carrying alleles for short stature or long inflorescence branches. Expand
High-density single nucleotide polymorphism (SNP) array mapping in Brassica oleracea: identification of QTL associated with carotenoid variation in broccoli florets
TLDR
This is the first description of the use of a B. napus SNP array to rapidly construct high-density genetic linkage maps of one of the constituent diploid species, and demonstrates the value and impact this resource will have on Brassica research. Expand
Rapid Genomic Characterization of the Genus Vitis
TLDR
This study demonstrates that the authors can move quickly towards genome-wide studies of crop species using next-generation sequencing, and suggests that whole-genome sequencing will become the genotyping method of choice for genome- wide genetic mapping studies in high-diversity plant species. Expand
Genetic diversity and population differentiation of traditional fonio millet (Digitaria spp.) landraces from different agro-ecological zones of West Africa
TLDR
Investigation of the genetic diversity and population differentiation in fonio millets found a clear-cut differentiation between the two species and a clustering of D. exilis accessions in three major genetic groups fitting to their geographical origins. Expand
Selective microenvironmental effects play a role in shaping genetic diversity and structure in a Phaseolus vulgaris L. landrace: implications for on‐farm conservation
TLDR
The authors' data suggest that a complex interaction of factors (differential microenvironmental selection pressures by farmers and by biotic and abiotic conditions, migration rate and drift) explains the observed pattern of diversity. Expand
Brassica taxonomy based on nuclear restriction fragment length polymorphisms (RFLPs)
TLDR
Molecular evidence for an ascending order of chromosome numbers in the evolution of Brassica and allied genera was obtained on the basis of RFLP data and phylogenetic analysis, suggesting that two basic evolutionary pathways exist for the diploid species examined. Expand
Genetic structure and isolation by distance in a landrace of Thai rice
TLDR
Bue Chomee rice shows slight but significant genetic differentiation among Karen villages which conforms to an isolation by distance model of differentiation, suggesting that landrace rice is a dynamic genetic system that responds to evolutionary forces, both natural and those imposed by humans. Expand
...
1
2
3
4
5
...