3. (old 8) (*) (+) VG head formation PQ (a) no head Blonde à couper améliorée, Lollo rossa, Redair 1 open head Actarus, Aquarel Manfred, Monet 2 closed head Clarion, Roxette, Kelvin, Sunrise 3 4. (+) Only cutting lettuce varieties: number of leaves QN (a) small Lollo rossa 1 medium Salad Bowl 2 large Felluca, Sartre, Xeres 3 5. (old 15) (+) VG Leaf: attitude QN (b) erect Feria, Pinokkio, Riva 1 semi-erect Amelia, Faradia, Sartre, Toronto 3 horizontal Chambery, Divina 5 6. (+) VG Leaf: division QL (b) entire Fiorella, Lollo rossa, Sunrise 1 lobed A couper à feuille de chêne blonde à graine noire, Salad Bowl 2 divided Jadigon, Kipling, Lagon, Monet 2 7. (+) VG Only varieties with divided leaves: Leaf: number of divisions QN (b) very small 1 small Curletta, Rodagio 3 medium Ezabel, Jadigon 5 large Expedition, Multired 54 7 very large Excite, Ezfrill, 9 VG/
medium Aquarel, Fiorella, Soraya 5 large Great Lakes 659, Musette 7 very Blonde maraîchère 9 12. VG Butterhead type varieties in glasshouse only: Head: closing of base QN (a) weak Partout 3 medium Carmelita 5 strong Dustin, Manfred 7 28. (old 13) (*) (+) VG Only varieties with closed head: Head: shape in longitudinal section PQ (a) narrow elliptic Actarus, Verte maraîchère 1 broad elliptic Amadeus, Aquarel, Sucrine 2 circular Passe Partout, Verpia 3 transverse broad elliptic Ametist, Frisady 4 30. VG Axillary sprouting QN absent or very weak Valmaine, Xanadu 1 weak Claridia, Shotter 3 medium Actarus 5 strong Amible, Bassoon 7 very strong 9 29. (old 34) Only varieties with closed head: Time of harvest maturity QN very early Blonde à couper améliorée, jaune d'or 1 early Attractie, Pantlika 3 medium Clarion, Newton 5 late Blonde maraîchère, Calmar 7 very late El Toro, Pinokkio 9 30. (old 35) (*) (+) Time of beginning of bolting under long day conditions MG
34. (old 41) (+) VG Resistance to Nasonovia ribisnigri biotype Nr: 0 QL absent Abel, Green Towers, Nadine 1 present Barcelona, Dynamite, Silvinas 9 35. (old 42) (+) VG Resistance to Fusarium oxysporum f. sp. lactucae race 1 QL absent Cobham Green, Patriot, Salinas 1 present Costa Rica No. 4, Romasol 9
6 7 8 9 transverse narrow elliptic obovate broad obtrullate triangular Ad. 10: Only varieties with entire leaves: Leaf: section 1 3 5 Convex flat concave Ad. 11: Leaf: anthocyanin coloration In some cases, for example when the area of anthocyanin is very small or when environmental conditions are not optimal for anthocyanin coloration, a seedling test may be useful. Stressing seedlings under cold and dry conditions gives a clear and easy indication on presence or absence of anthocyanin. Ad. 12: Leaf: area covered with anthocyanin coloration To observe the total area of diffused or localised anthocyanin coloration. Ad. 13: Leaf: hue of anthocyanin coloration Ad. 14: Leaf: intensity of anthocyanin coloration Intensity of anthocyanin coloration ( 14) of anthocyanin coloration ( 13) 1 reddish 2 brownish 3 purplish 1 very weak 3 weak Du bon jardinier, Steirer Krauthauptel Brauner Trotzkopf, Diablo, Maravilla de Verano 5 medium Lollo rossa Frisée d’Amérique, Luana, New Red Fire, Salad bowl rossa 7 strong Jadigon Duplex, Merveille des quatre saisons 9 very strong Revolution Multired 54 Faradia, Iride