Flax (Linum usitatissimum L.) Genomics and Breeding

摘要: Flax (Linum usitatissimum L.) is a self-pollinating crop grown for its stem fiber and seed oil. Owing to long-term domestication, cultivated flax has diversified into two main morphotypes, namely oil or linseed types. In the last decade, significant progress been achieved in genomics, such as development of genetic physical maps, chromosome-scale reference genome sequences, large number molecular markers (SSRs, SNPs) quantitative trait loci (QTL) associated with traits importance. Genome-wide QTL can be effectively used evaluation germplasm. Rust, Fusarium wilt, powdery mildew, pasmo are four major diseases concern breeding. Biparental hybridization breeding pedigree selection off-season operations remains predominant method improvement Canadian programs, requiring about ten years reach registration cultivar. However, use doubled haploid (DH) may shorten this cycle by approximately three generations simultaneously advantageous application genomic (GS). The mapping target accelerate programs. have shown potential GS prediction complex traits. With more identified, it possible pyramid all superior alleles multiparental crossing combining DH develop cultivars.