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Table 3 Gain obtained using the M-method at each step of the construction of the nested core collection versus random sampling.

From: Construction of nested genetic core collections to optimize the exploitation of natural diversity in Vitis vinifera L. subsp. sativa

Original collection

Sample size

M-method (mean number of alleles for 5 runs)

Random sampling (mean number of alleles for 5 runs)

Gain using M-method

Vassal with G-48 used as core

92 individuals

326

278.2 (+/- 1.3)

15%

Restricted Vassal collection (without rare alleles freq < 0.05%)

48 individuals

269.8 (+/- 1.6)

185.2 (+/- 5.7)

31%

G-48 (without rare alleles freq < 0.05%)

24 individuals

238.2 (+/- 0.4)

218.8 (+/- 6.5)

8%

G-24 (without rare alleles freq < 0.05%)

12 individuals

190.8 (+/- 0.4)

177.8 (+/- 1.6)

6%