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. 2022 Oct 13;13:989484. doi: 10.3389/fpls.2022.989484

Table 2.

Initial embryo quality score recorded before starting germination treatment.

Category Initial embryo score
Good quality:
Slim hypocotyl, minimum two cotyledons
9 = Hypocotyl longer or equal to 6.0 mm
8 = Hypocotyl 4.0-5.99 mm
7 = Hypocotyl less than or equal to 3.99 mm
Medium quality:
Slightly swollen hypocotyl, minimum two cotyledons
6 = Hypocotyl longer or equal to 4.0 mm
5 = Hypocotyl 2.0-3.99 mm
4 = Hypocotyl less than or equal to 1.99 mm
Poor quality:
Embryos deformed
3 = Looks like an embryo, but too many cotyledons, swollen hypocotyl, small and bent
2 = Only long hypocotyl, either straight, bent or shrimp-like
1 = Deformed embryos, cotyledons grow from center of hypocotyl, cotyledons deformed