DNA repair and crossing over favor similar chromosome regions as discovered in radiation hybrid of Triticum

BMC Genomics

Table 1 Comparison of radiation hybrid and genetic maps of wheat chromosome 3B

Deletion bins	3BS3-0.87-1.00	3BS8- 0.78-0.87	3BS9-0.57-0.75	3BS2-0.56-0.57	3BS1-0.33-0.55	C-3BS1-0.33	C-3BL2-0.22	3BL2-0.22-0.28	3BL1-0.31-0.50	3BL10-0.50-0.63	3BL7-0.63-1.00	Chr^†
No. of marker	7.0	155.0	9.0	3.0	44.0	28.0	27.0	29.0	47.0	4.0	187.0	540.0
Bin size (Mb)	56.0	39.0	78.0	4.0	95.0	142.0	124.0	33.0	39.0	73.0	208.0	992.0
Bin size (%)	5.7	3.9	7.9	0.4	9.6	14.3	12.5	3.3	3.9	7.4	21.0	89.8
Bin saturation
(Mb Marker no^-1)	8.0	0.3	8.7	1.3	2.2	5.1	4.6	1.1	0.8	18.3	1.1	1.8
Map size (cR)	79.7	572.9	69.2	36.7	113.7	115.6	99.1	58.9	37.0	41.3	459.6	1871.9
BR freq (cR 2 Mb^-1) ^§	0.7	7.4	0.5	4.6	0.6	0.4	0.4	0.9	0.5	0.3	1.1	1.0
Resolution (Mb cR^-1) ^¶	0.7	0.1	1.1	0.1	0.8	1.2	1.3	0.6	1.1	1.8	0.5	0.5
Map size (cM) ^‡	5.2	33.1	13.4	--	1.6	0.9	1.6	1.6	6.2	3.5	104.2	179.0
CO freq. (cM Mb^-1) ^§‡	0.1	0.8	0.2	--	0.0	0.0	0.0	0.0	0.2	0.0	0.5	0.2
Resolution (Mb cM^-1) ^¶	10.8	1.2	5.8	--	61.3	167.1	80.0	21.3	6.3	21.2	2.0	5.5
Map size ratio (cR cM^-1)	15.3	17.3	5.2	--	73.4	136.0	63.9	38.0	6.0	12.0	4.4	10.45

^† Whole chromosome values are not averages for each category but re-calculated for the overall values. ^‡ Values in the row are as of Saintenac et al. [7]. ^§ Frequency of DNA breakage and repair per Mb and frequency of a crossing-over event per Mb. ^¶ Resolution is the potential to uniquely resolve two markers at a distance equal or larger than this value. Chr: chromosome; BR freq: breakage and repair frequency; CO freq: crossing over frequency; cR: centiRays; Mb: megabase.

ISSN: 1471-2164