First column : accession identifier (called code) in Numeric. You can give non adjacent and non ordered values.
Second column : number of individuals per accession in Numeric. Put the number of individual to 1 if you have only one individual by accession on the whole collection. MSTRAT will maximize the diversity of accessions, using the range covered by all their individuals...
Third column up to the end : variables in numeric or in alphanumeric format, as many as variables you want (<=500).
The two first columns are COMPULSARY in numeric. You can introduce other identification variables of the accessions (such as the name of accessions) in numeric or alphanumeric but these variables must be declared as inactive variables. The spacer between fields is the blank. So, don't put blank characters before the first column or inside a variable.
Mstrat handle missing data. The code of missing data is the point. Then in the program, the code of missing data is the number 9999. So, the value 9999 is to be avoided. It will be read as a missing data. If an accession have missing data for a variable, the accession brings no richness for this variable. Accessions having missing data will be retained in the core collection only they are original for the another variables.
10 | 1 | POP65n1 | HTES-PYRENEES | 65 | P0 | C | j | 757 | 4.70 | 10.7 | 314.8 | 0 | 0 | 0 | 1 | b | 7 |
1012 | 1 | POP71n6 | BRESSE | 71 | P3 | C | jo | 896 | 3.25 | 15.9 | 186.6 | 1 | 1 | 1 | 1 | b | 7 |
1019 | 1 | POP21n2 | BRESSE | 21 | P3 | C | j | 895 | 3.35 | 11.4 | 144.6 | 1 | 0 | 1 | 0 | b | 2 |
1023 | 1 | POP68n3 | ALSACE | 68 | P3 | C | r | 889 | 3.00 | 10.3 | 295.9 | 1 | 0 | 1 | 0 | b | 1 |
1038 | 1 | POP65n10 | HTES-PYRENEES | 65 | P3 | CD | j | 866 | 4.60 | 9.5 | 286.6 | 1 | 0 | 0 | 1 | a | 2 |
1039 | 1 | POP65n11 | HTES-PYRENEES | 65 | P2 | C | j | 831 | 5.75 | 12.3 | 261.8 | 1 | 0 | 1 | 0 | a | 6 |