LINKAGE RELATIONSHIPS IN WILD EMMER WHEAT, TRITICUM DICOCCOIDES

[摘要] The linkage relationships in wild emmer wheat, Triticum dicoccoides , between nine enzymatic loci ( Mdh-1, Ipo, β-Glu, Pept-1, Pept-3, Est-5, Est-1, 6Pgdh-2 and Hk ) and a coleoptile pigment locus ( Rc ) were investigated. Chromosome locations of genes were inferred from analysis of ditelocentric lines of Triticum aestivum , cultivar Chinese Spring. The loci Mdh-B1 and Hk are linked (lambda = 0.1869) and are most likely located on the chromosome 1B . The loci Pept-B1 and Rc are linked (lambda = 0.2758) and are located on the 6Bq chromosomal arm. Rc also has significant interactions with the loci Pept-3 and Ipo , although there is no significant linkage detectable. The interactions may be a result of epigenetic interactions. Est-1 has only one active product in T. dicoccoides and is most likely located on the 3Ap chromosome arm. No significant interactions were found for the remaining loci.

[学科分类] 医学（综合）