Table 1.
Abbreviation, origin, identification, and short phenotypic description of the 11 lettuce varieties used in this study. The plant material from local landraces was provided by the: (1) Valencian Institute for the Conservation and Improvement of Agrobiodiversity (COMAV, Valencia, Spain); (2) Valencian Institute for Agricultural Research (IVIA, Moncada, Spain).
| Abbreviation Code | Origin | Identification | Plant Description |
|---|---|---|---|
| CL1 | Commercial | Romaine lettuce long mule ear (Battle) a | Dark green. Elongated shape. Compact and narrow head, barely prominent. |
| CL2 | Commercial | Romaine lettuce from the gardeners (Vilmorín) a | Green-yellowish. Elongated shape. Compact and narrow head, barely prominent. |
| CL3 | Commercial | Wonder summer (Battle) a | Green with reddish shades. Remarkable width in relation to height. Compact, rounded and quite prominent head. |
| CL4 | Commercial | Marvel of Four Seasons Butterhead (Battle) a | Dark green with reddish shades; the red is prominent at the edges. Round shape. Quite rounded shape. Full-sized head. |
| CL5 | Commercial | Batavia, iceberg type (Battle) a | Not very intense green. Rounded shape. Full-sized head. |
| L1 | Local landrace | BGV5721 b,1 | Dark green. Pink shades near the principal stem. Elongated shape. Compact and narrow head, barely prominent. |
| L2 | Local landrace | BGV5722 b,1 | Green-yellowish. Round shape. Full-sized head. |
| L3 | Local landrace | BGV5723 b,1 | Green-yellowish. Remarkable width in relation to height. Head not appreciated. |
| L5 | Local landrace | BGV5736 b,1 | Dark green with reddish shades. Elongated shape. Compact and narrow head, quite prominent. |
| L10 | Local landrace | L-10 b,2 | Dark green. Elongated shape. Compact and narrow head, barely prominent. |
| L11 | Local landrace | L-11 b,2 | Dark red, almost purple. Remarkable width in relation to height. Head not appreciated. |
a Commercial name (company), b Genbank code.