Table 9.
Non-destructive plant variables measured in seedlings under greenhouse conditions
| Trait | Abbreviation | Date of measurement | Description |
|---|---|---|---|
| Days to germination (d) |
D_G |
2-4 weeks after sowing |
From day of sowing, number of days until appearance of shoot from soil. |
| Days to cotyledon emergence (d) |
D_CE |
2-4 weeks after sowing |
From day of sowing, number of days until both cotyledons were fully open. |
| Number of cotyledons (#) |
N_Cot |
2-4 weeks after sowing |
Number of cotyledons per plant. |
| Plant height (cm.) |
P_H |
30 DAG |
Plant height from the plant base at the soil to its apex. |
| Stem diameter (cm.) |
S_D |
30 DAG |
Stem diameter at the base of the trunk. |
| First leaf length (cm.) |
FL_l |
30 DAG |
For the first emerged leaf, length was measured from the point at which the petiole joins the leaf, to the tip of the leaf. |
| First leaf width (cm.) |
FL_W |
30 DAG |
For the first emerged leaf, width was measured between the two furthest horizontal (and parallel) points across the leaf. |
| Total number of leaves (#) | Nr_L | 60 DAG | Overall number of mature leaves, excluding cotyledons and emerging leaves around the plant’s apex. |
Sowing date was December 20, 2008. DAG = days after germination.