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Table 2 Summary of two independent white clover F 1 -derived parental consensus genetic linkage maps and an integrated map

From: An integrated genetic linkage map for white clover (Trifolium repens L.) with alignment to Medicago

Linkage Group No. of Marker Loci Map Length (cM, Kosambi) Marker Density (cM/locus)
Observed Estimated
IM MP2 MP1 IM MP2 MP1 IM MP2 MP1 IM MP2 MP1
1-1 66 44 31 86.7 84.9 91.0 89.3 88.9 80.8 1.31 1.93 2.94
1-2 87 70 27 92.8 93.1 72.0 94.9 95.8 81.8 1.07 1.33 2.67
2-1 42 24 22 70.2 63.2 72.0 72.6 72.0 76.8 1.67 2.63 3.27
2-2 48 38 18 71.4 70.9 76.0 69.6 77.0 80.8 1.49 1.87 4.22
3-1 77 47 35 89.4 92.4 76.0 91.7 96.4 73.8 1.16 1.97 2.17
3-2 85 53 38 88.1 87.8 77.0 90.2 91.2 66.8 1.04 1.66 2.03
4-1 98 59 52 82.5 76.9 82.0 84.2 79.5 86.8 0.84 1.30 1.58
4-2 78 52 47 80.0 76.7 94.0 82.1 79.7 98.8 1.03 1.47 2.00
5-1 60 50 26 76.3 62.3 77.0 78.9 64.9 95.8 1.27 1.25 2.96
5-2 63 46 14 72.7 65.4 28.0 75.0 68.3 76.8 1.15 1.42 2.00
6-1 57 41 22 70.1 68.5 69.0 73.6 68.7 74.8 1.23 1.67 3.14
6-2 44 22 23 66.5 70.3 60.0 74.5 74.8 73.8 1.51 3.20 2.61
7-1 70 41 38 88.3 94.8 69.0 90.8 99.5 81.8 1.26 2.31 1.82
7-2 62 47 20 72.9 76.6 62.0 75.3 79.9 32.8 1.18 1.63 3.10
8-1 95 59 41 86.2 93.8 70.0 88.0 97.1 73.8 0.91 1.59 1.71
8-2 77 40 39 79.6 87.2 69.0 81.7 91.7 64.8 1.03 2.18 1.77
mean 69.3 45.8 30.8 79.6 79.1 71.5 82.0 82.8 76.3 1.20 1.84 2.50
SEM 4.3 3.0 2.8 2.1 2.9 3.7 2.0 2.9 3.7 0.06 0.13 0.18
Total 1109 733 493 1273.6 1264.8 1144.0 1312.5 1325.2 1220.7    
   Genome Coverage 97.0% 95.4% 93.7%    
  1. MP1 is the map published by Barrett et al. [20]; MP2 is based on linkage analysis of 184 individuals from the pair cross of heterozygous genotypes 21125.DC and 20161.21. IM = the linkage map integrated from consensus maps in populations MP1 and MP2. The integrated map consists of 1109 loci including gene-targeted microsatellites, candidate gene markers, and the morphological marker Rf. Estimated = estimated maximum map length in each linkage group (=observed linkage group length×[(no. loci+1/(no. loci-1)]; Method 4 of Chakravarti et al. [53]. SEM = standard error of the mean. Genome Coverage = observed map length/estimated map length according to Sekino and Hara [54].