[The order of the bs, Skdh, and Aadh1 genes in chromosome 5R of rye Secale cereale L].

Segregation analysis was performed in the progenies obtained in analyzing crosses of hybrids of spring and winter accessions of rye Secale cereale L. and wild S. montanum subsp. anatolicum (Grossh.) Tzvel. (syn. S. strictum (J. Presl) J. Presl). The test genes controlled the brittle stem (bs), the allelic variants of aromatic alcohol dehydrogenase (Aadh 1) and shikimate dehydrogenase (Skdh), and the growth habit (Vrn 1). A linkage was observed in the inheritance of the brittle stem and the aromatic alcohol dehydrogenase and shikimate dehydrogenase alloenzymes. The order of genes was established to be bs-Skdh-Aadh 1, and the genetic distances were estimated to be bs-(9.0%)-Skdh, bs-(10.8%)-Aadh 1, and Skdh-(5.3%)-Aadh 1. The recombination coefficient between the Skdh and Aadh 1 genes varied from 2.2 to 18.2%, averaging 5.3%. The growth habit was inherited independently of the bs-Skdh-Aadh 1 linkage group.