The estimation of map distance
from recombination values.
Differences in marker order and map distances
were noticed when the vicinity of QTL-M was compared with the region in the integrated map published by Song et al.
pretiosa complex can be illustrated by plotting [D.sub.N] against map distance
(Table 4) for all pairwise population comparisons (Green 1983; D.A.
(2009), physical map distances
were transformed into Morgan genetic map distances
This Z value is used with a lookup table to extrapolate a map distance
between two genes (Griffiths et al., 2000; Immer, 1930; Macguire, 2005).
Linkage map distance
(cM) = 1/4 A- ln (1+2r)/(1-2r).
Plant SSR genotype Recombination Map SSR Plant Rps distance locus genotype AA AB BB P [+ or -] SE cM([dagger]) -- no -- -- Satt152 Rps1bRps1b 18 8 3 0.24 [+ or -] 0.11 rps1rps1 0 5 24 0.09 [+ or -] 0.07 Mean 0.16 [+ or -] 0.07 3.2 Satt530 Rps1bRps1b 20 5 4 0.22 [+ or -] 0.11 rps1rps1 2 2 21 0.12 [+ or -] 0.09 Mean 0.18 [+ or -] 0.07 1.6 Satt584 Rps1bRps1b 17 9 3 0.26 [+ or -] 0.12 rps1rps1 1 9 18 0.20 [+ or -] 0.11 Mean 0.23 [+ or -] 0.8 ([dagger]) Linkage Group N map distance
between the indicated SSR and the SSR immediately above (from Cregan et al., 1999).
Reference to published map information including types and number of markers mapped, average map distance
between markers, range of map interval size, and qualitative and quantitative trait loci mapped.
(1983) derived the following formula for the probability of at least one marker within a specified map distance
of a major gene:
Data analysis using Mapmaker 3.0 (Lander et al., 1987) revealed that markers on linkage groups D2 and O were unlinked to wp, as the map distance
between these markers and wp was greater than 50 cM.
Let us denote by [Delta](d) an inverse mapping function that converts a map distance
d, given in morgans, to a recombination fraction r.
The map distance
between a QTL and its flanking markers was 2.5 or 10 centiMorgans (cM).