Abstract
1) Since 1929 linkage studies were begun in order to get a fundamental knowledge to the genetics in einkorn-wheats, Triticum aegilopoides var. boeoticum and T. monococcum var. vulgare. The former species is assumed to be the standard type of the latter. The F1 hybrids showed in most cases aegilopoides- or nearly aegilopoides-characters.
2) A linkage group involving 3 genes is established.
sca1 (scabra)....One of the duplicate genes for pubescent leaf-blades. The phenotypes corresponding to the normal alleles of sca1 and sca2 are apparently different (Fig. 1). The gene is recessive to its normal allele+ of T. aegilopoides.
gla1 (glabrescens)....One of the duplicate genes for hairiness of the rachis (Fig. 2). Recessive to its normal allele+.
his (hispidulus)....A recessive gene for hairy nodes (Fig. 3). The normal allele+ of the gene is so far completely linked with a gene for pubescence on sheaths.
3) The linkage relationship is shown in Fig. 4.
