Genetic evidence for early flax domestication with capsular dehiscence

  title={Genetic evidence for early flax domestication with capsular dehiscence},
  author={Yong-Bi Fu},
  journal={Genetic Resources and Crop Evolution},
  • Yong-Bi Fu
  • Published 2 February 2011
  • Biology
  • Genetic Resources and Crop Evolution
Flax (Linum usitatissimum L.) is the earliest oil and fibre crop, but little is known about its domestication process. Attempt was made here to assess genetic relationships of 63 Linum accessions representing seven typical groups of cultivated flax and its wild progenitor, pale flax (Linum bienne Mill.), by using 49 informative expressed sequence tag-derived simple sequence repeat (EST-SSR) primer pairs. The seven groups were pale flax from Turkey, pale flax from other countries, and five… 

Flax (Linum usitatissimum L.) Genomics and Breeding

The mapping of QTL for target traits may accelerate application of molecular breeding in flax improvement programs, and genome-wide QTL have shown potential in GS for the prediction of complex quantitative traits.

Population-based resequencing revealed an ancestral winter group of cultivated flax: implication for flax domestication processes

  • Yong-Bi Fu
  • Biology, Medicine
    Ecology and evolution
  • 2012
The genetic relationships of 48 Linum samples representing pale flax and four trait-specific groups of cultivated flax are assessed through population-based resequencing at 24 genomic regions, and revealed a winter group of cultivated Flax that displayed close relatedness to its progenitor, paleflax.

Variation in phenotypic characters of pale flax (Linum bienne Mill.) from Turkey

Pale flax displayed larger variation in vegetative plant parts and growth habit than the cultivated flax and more heterogeneity within accessions, and a higher degree of variation was observed in many generative parts such as the flower characters than in the capsule and seed characters.

Locus-specific view of flax domestication history

A phylogenetic analysis of the sad2 locus in 43 pale and 70 cultivated flax accessions established a complex domestication history for flax that has not been observed previously, and supports multiple paths of flax domestication for oil-associated traits before selection of the other domestication- associated traits of seed dispersal loss and fiber production.

The potential of pale flax as a source of useful genetic variation for cultivated flax revealed through molecular diversity and association analyses

It is demonstrated that pale flax is a potential source of novel variation to improve multiple traits in cultivated flax and that association mapping is a suitable approach to screening pale Flax germplasm to identify favorable quantitative trait locus alleles.

Genetic characterization of a core collection of flax (Linum usitatissimum L.) suitable for association mapping studies and evidence of divergent selection between fiber and linseed types

The genomic scans provide the first insights into candidate regions affected by divergent selection in flax, and have the ability to increase the power to detect loci influencing complex traits in combination with association mapping studies.

An Overview on Flax (Linum usitatissimum L.) and its Genetic Diversity

In-depth studies based on both morphological and molecular markers will help in better conceiving the genetic diversity of flax germplasm.

Biodiversity in Ethiopian linseed (Linum usitatissimum L.): molecular characterization of landraces and some wild species

The results show the range of characters that can be exploited in breeding lines appropriate for smallholder and commercial farmers in Ethiopia, producing a sustainable, secure, high-value crop meeting agricultural, economic and cultural needs.

Effects of domestication bottleneck and selection on fatty acid desaturases in Indian sesame germplasm

This study suggested that sesame has undergone domestication bottleneck during its use for a long time, and reduced diversity in these critical quality governing genes in improved cultivars suggested that future sesame cultivation would benefit from the incorporation of alleles from sesame's wild relatives.



Genetic diversity of cultivated flax (Linum usitatissimum L.) and its wild progenitor pale flax (Linum bienne Mill.) as revealed by ISSR markers

Pale flax displayed more ISSR variation than landraces and dehiscent type, but less than winter type, of cultivated flax, while genetic distances among the pale flax accessions were significantly associated with their geographic distances and elevation differences.

Evidence of the domestication history of flax (Linum usitatissimum L.) from genetic diversity of the sad2 locus

The phylogenetic evidence indicates that flax was first domesticated for oil, rather than fibre, and that the elevated synonymous substitution rate is compatible with a population expansion of flax since domestication, followed by a population decline in historic times.

Variation of cultivated flax (Linum usitatissimum L. subsp.usitatissimum) and its wild progenitor pale flax (subsp.angustifolium (Huds.) Thell.)

Range of variation, genetically based variation, heritability and correlation of several characters are considered, especially with respect to the influence of domestication, and cultivated flax shows higher variation in the characters of generative plant parts, while pale flax varies more in the vegetative parts of the plant.

RAPD analysis of genetic relationships of seven flax species in the genus Linum L

Genotyped 12 flax accessionsrepresenting seven flax species in the genus Linum with 527 RAPD loci from 29 informative RAPD primers and analyzed their genetic relationships with simple matching, Dice's and Jaccard's similarity coefficients.

Pod Dehiscence of Soybean: Identification of Quantitative Trait Loci

The results establish the genomic location of one major and a few minor QTL, identify an epistatic interaction, and indicate transgressive segregation which is plausibly the result of susceptibility alleles contributed by the resistant parent.

Phenotypic and Molecular (RAPD) Differentiation of Four Infraspecific Groups of Cultivated Flax (Linum usitatissimum L. subsp. usitatissimum)

The infraspecific classification and the presented characterization data increase the transparency of genetic diversity available in cultivated flax and in particular in the PGRC flax collection and underlining the phenotypic and genotypic validity of this grouping.

Characterization of expressed sequence tag-derived simple sequence repeat markers for 17 Linum species.

A set of 100 informative expressed sequence tag-derived simple sequence repeat (EST-SSR) primer pairs developed in cultivated flax were characterized on 35 Linum accessions representing 17 Linum species for their transferability to otherLinum species.

Genetic differentiation of cocoa (Theobrotna cacao L.) populations revealed by RAPD analysis

Analysis of the variability detected using RAPDs clearly discriminated between the geographical origin of the three cocoa populations and revealed that most variation was detected within a population.

Development and analysis of EST-SSRs for flax (Linum usitatissimum L.)

The EST-SSRs developed herein represent the first large-scale development of SSR markers in flax and have potential to be used for the development of genetic and physical maps, quantitative trait loci mapping, genetic diversity studies, association mapping and fingerprinting cultivars for example.

The Genetics of Domestication of the Azuki Bean (Vigna angularis)

Genes found related to germination and flowering time in cultivated azuki bean may confer a selective advantage to the hybrid derivatives under some ecological conditions and may explain why azukibean has evolved as a crop complex in Japan.