| 1/00 | Processes for modifying genotypes (A01H 4/00 takes precedence) |
| 1/02 | Processes for modifying genotypes (A01H 4/00 takes precedence) Methods or apparatus for hybridisation; Artificial pollination |
| 1/04 | Processes for modifying genotypes (A01H 4/00 takes precedence) Processes of selection |
| 1/06 | Processes for modifying genotypes (A01H 4/00 takes precedence) Processes for producing mutations, e.g. treatment with chemicals or with radiation (specific mutations prepared by genetic engineering on plant cell or plant tissues C12N 15/00) |
| 1/08 | Processes for modifying genotypes (A01H 4/00 takes precedence) Processes for producing mutations, e.g. treatment with chemicals or with radiation (specific mutations prepared by genetic engineering on plant cell or plant tissues C12N 15/00) Methods or apparatus for producing changes in chromosome number |
| 3/00 | Processes for modifying phenotypes (A01H 4/00 takes precedence) |
| 3/02 | Processes for modifying phenotypes (A01H 4/00 takes precedence) by controlling duration, wavelength, intensity, or periodicity of illumination |
| 3/04 | Processes for modifying phenotypes (A01H 4/00 takes precedence) by treatment with chemicals |
| 4/00 | Plant reproduction by tissue culture techniques |
| 5/00 | Flowering plants, i.e. angiosperms |
| 5/02 | Flowering plants, i.e. angiosperms Flowers |
| 5/04 | Flowering plants, i.e. angiosperms Stems |
| 5/06 | Flowering plants, i.e. angiosperms Roots |
| 5/08 | Flowering plants, i.e. angiosperms Fruits |
| 5/10 | Flowering plants, i.e. angiosperms Seeds |
| 5/12 | Flowering plants, i.e. angiosperms Leaves |
| 7/00 | Gymnosperms, e.g. conifers |
| 9/00 | Pteridophytes, e.g. ferns, club-mosses, horse-tails |
| 11/00 | Bryophytes, e.g. mosses, liverworts |
| 13/00 | Algae (unicellular algae C12N 1/12) |