VI GENETIC LINKAGES

Unless otherwise indicated, estimates are for T. aestivum, T. turgidum (tv:) and T. monococcum (dv:).

All genetic recombination values and standard errors (S.E.) from the literature are presented as percentages with references. Where values were converted to map units by authors these values, S.E.s and references appear in appropriate columns. Recombination values of 15% or greater were converted to map units using the Kosambi function:

X=25 loge [(1+2y)/(1-2y)]

where X is the map distance in centimorgans (cM) and y is the recombination fraction. This function has little effect on values of less than 15%. Obviously, high values with large S.E.s should be treated with caution.

The S.E. for X was computed from the formula:

S.E.X = 100 S.E.y/(1-2y2).

As far as possible genes are listed in order from the distal end of the short (S) arm to the distal end of the long (L) arm. Map distances between DNA markers are not listed individually; these are summarized and referenced in the maps following this section.

I = genetically independent; cent = centromere; @= therefore; W = approximately.