- Plant Sciences 7
- Agriculture 6
- Plant Genetics and Genomics 4
- Plant Physiology 3
- Science, Humanities and Social Sciences, multidisciplinary 3
- Life Sciences, general 2
- Physics, general 2
- Plant Breeding/Biotechnology 2
- Plant Ecology 2
- Science, multidisciplinary 2
- Biotechnology 1
- Chemistry/Food Science, general 1
- Earth Sciences, general 1
- Ecology 1
- Engineering, general 1
- Forestry 1
- Plant Anatomy/Development 1
- Plant Pathology 1
- Plant Systematics/Taxonomy/Biogeography 1
- Tree Biology 1