2 years ago

Iceberg 2018

Resistances Resistances

Resistances Resistances in varieties of our crops will be coded (see for explanation our coding list at, unless indicated otherwise. In case a variety is resistant to more than one pathogen, the individual resistance codes will be separated by the symbol “/”. High resistance (HR) - plant varieties that highly restrict the growth and development of the specified pest or pathogen under normal pest or pathogen pressure when compared to susceptible varieties. These plant varieties may, however, exhibit some symptoms or damage under heavy pest or pathogen pressure. Variety name Resistances Size Season Growing system HR IR S M L Sp Su Au Wi • If in a resistance code of a certain variety reference is made to certain strains for which the resistance is claimed this means that no resistance is claimed to other strains of the same pathogen. • If in a resistance code no reference is made to strains of the pathogen for which the resistance is claimed this means that resistance is claimed only to certain not further specified strains of the pathogen and herewith disclaiming any guarantee that the variety will not be infected by the said pathogen. Disclaimer Intermediate resistance (IR) - plant varieties that restrict the growth and development of the specified pest or pathogen, but may exhibit a greater range of symptoms or damage compared to highly resistant plant varieties. Intermediate resistant plant varieties will still show less severe symptoms or damage than susceptible plant varieties when grown under similar environmental conditions and/or pest or pathogen pressure. Tolerance (T) - the ability of a plant variety to endure abiotic stress without serious consequences for growth, appearance and yield. Pedrola Bl:16-27,29,32,34EU/1-8US/Nr:0 LMV:1 x x OF / HGS Ronodinla Bl:16-35EU/1-9US Fernandola | NEW Bl:16-27,29,32,34EU/1-8US x OF Descriptions, recommendations and illustrations in brochures and leaflets shall correspond as closely as possible to tests and practical experience and are subject to typographical and/or printing errors. This information shall be provided to assist professional growers and users, whereby variable local conditions must be taken into account. Under no circumstances shall Enza Zaden accept liability based on such information for deviating results in the cultivated product. Current information concerning the resistances is available on Acula Bl:16-27,29,32,34EU/1-8US/Nr:0 LMV:1 x x OF Botiola | STANDARD Bl:16-27,29,32,34EU/1-8US x OF / HGS Diegola Bl:16-27,29,32,34EU/1-8US x OF / HGS Icemaker | NEW Bl:16-35EU/1-9US/Nr:0 x OF Pelayo | NEW Bl:16-35EU/1-9US x OF Glendana | STANDARD Bl:16-35EU/1-9US x OF / HGS Oriola Bl:16-27,29,32,34EU/1-8US/Nr:0 x OF Saula | STANDARD Bl:16,21,23,32EU/1-6US Fol:1 x OF / HGS Explanation of used abbreviations Viruses Code English name Scientific name pathogen ISF Races/Strains Level of resistance LMV Lettuce mosaic Lettuce mosaic virus 1 IR TBSV Lettuce die-back Tomato bushy stunt virus HR Bacteria Ss Corky root Sphingomonas suberifaciens (ex Rhizomonas suberifaciens) IR Vicentola Bl:16-27,29,32,34EU/1-8US Fol:1 x Size: S=Small M=Medium L=Large | Growing system: OF = Open field HGS = Hydroponic Growing System | = Ideal climate = Mild climate Season: Sp=Spring Su=Summer Au=Autumn Wi=Winter HR: High Resistance | IR: Intermediate Resistance | For explanation of the codes of resistances, see the table on page 11 of this brochure. Current information concerning the resistances is available on Fungi Insects Bl Downy mildew Bremia lactucae 16-35EU/1-9US HR Fol Fusarium wilt Fusarium oxysporum f.sp. lactucae 1 IR/HR Nr Lettuce leaf aphid Nasonovia ribisnigri 0 HR Pb Lettuce root aphid Pemphigus bursarius HR 10 | Enza Zaden Enza Zaden | 11

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