1. Variety characteristics: including maturity, adaptability and tolerance of different varieties.
2. Moisture content: The moisture content of seeds, usually expressed as a percentage.
3. Germination rate: the percentage of seeds that can germinate normally under certain conditions, expressed as a percentage.
4. Germination ability: The ability of seeds to germinate and form strong seedlings.
5. Purity: the purity of seeds, that is, the content of hybrids or other impurities in seeds.
6. Impurity rate: the content of other impurities in seeds except the main varieties.
7. Germination potential: the power of seeds to germinate under certain conditions.
8. Motivation: the ability of seeds to germinate normally after being preserved for a period of time.
These indexes can be different according to different varieties, regions and uses of seeds. If you need to know the corn seed index of a specific variety in detail, it is recommended that you consult the relevant seed suppliers or agricultural experts.