MS MG (VS) 1) long term COYD 2x1% method at least 10 and preferably at least 20 df3) df<10 at least 10 and preferably at least 20 df TGP/8 TGP/8 discrete interval continuous discrete ordinal discrete VS VS VS VG Pearson’s Chi-Square test Fisher’s Exact test GLM models Threshold models See also explanation for QN characteristics in TGP/9 sections 5.2.2 and 5.2.3 See explanation for QN characteristics in TGP/9 section 5.2.4 Eij≥5 4) Eij<10 TGP/8 TGP/8 TGP/9 nominal discrete (VS) 2) VS VS VG Pearson’s Chi-Square test Fisher’s Exact test GLM models See explanation for QL and PQ characteristics in TGP/9 sections 5.2.2 and 5.2.3 Eij≥5 Eij<10 Eij≥5 TGP/8 TGP/8 TGP/9 “1) see remark in section 2.3.3.8.2 [cross ref.] “2) normally VG but VS be possible “3) df – degree of freedom “4) Eij – expected of a class Table 4: Statistical procedures for the assessment of uniformity Type of scale Distribu- tion Observation method Procedure Further Conditions Reference document ratio continuous discrete trial
“Table 6: Relation between expression of characteristics and scale levels of data for the assessment of distinctness and uniformity Example Name of characteristic Distinctness Uniformity Unit of ment Description (states of expression) Type of scale Unit of assess- ment Description (states of expression) Type of scale 1 Sex of plant 1 2 3 4 dioecious female dioecious male monoecious unisexual monoecious hermaphrodite nominal discrete True-type Off-type Number of plants belonging to the variety Number of off-types nominal discrete 2 Leaf blade: variegation 1 9 absent present nominal discrete True-type Off-type Number of plants belonging to the variety Number of off-types nominal discrete 3 Length of plant cm assessment in cm without digits after decimal point ratio cm assessment in cm without digits after decimal point ratio True-type Off-type Number of plants belonging to the variety Number of off-types nominal discrete 4 Number of stamens counts 1, 2, 3, ... , 40, 41, ... ratio discrete counts 1, 2, 3, ... , 40, 41, ... ratio discrete 5 Time of beginning of flowering Date e.g. May 21, 51st day from April 1 interval discrete Date e.g. May 21, 51st day from 1 interval discrete True-type Off-type Number of plants belonging to the variety Number of off-types nominal discrete
Example Name of characteristic Distinctness Uniformity Unit of assess- ment Description (states of expression) Type of scale Unit of assess- ment Description (states of expression) Type of scale 6 Intensity of anthocyanin 1 2 3 4 5 6 7 8 9 very low very low to low low low to medium medium medium to high high high to very high very high ordinal discrete (with an True-type Off-type Number of plants belonging to the variety Number of off-types nominal discrete 7 Shape 1 2 3 4 5 6 7 deltate ovate elliptic obovate obdeltate circular oblate nominal discrete True-type Off-type Number of plants belonging to the variety Number of off-types nominal discrete 8 Flower color 1 2 3 4 5 6 7 8 9 10 dark red medium red light red white light blue medium blue dark blue red violet violet blue violet nominal discrete True-type Off-type Number of plants belonging to the variety Number of off-types nominal discrete Consequential changes: To renumber current Section 2: “Validation of Data and Assumptions” in Part I of document TGP/8 to become Section 3; To renumber current Section 3: “Choice of Statistical Methods for Examining Distinctness” in Part I of document TGP/8 to become Section 4.