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Characterisation and evaluation data

Experiment descriptionTrait nameTrait methodScoreScore link
Lettuce variety descripti[...] Growing conditions1 = indoor, 2 = outdoor, [...] 1
Tests with 14 NL and 6 Cz[...] Bremia lactucaeResistance to B. lactucae[...] 9
Test lettuce root aphid r[...] Pemphigus bursarius(1=very resistant, 2=resi[...] 5
Glasshouse trial, butterh[...] Heart formation-4
Glasshouse trial, butterh[...] HomogeneityAt harvest maturity (3=he[...] 7
Glasshouse trial, butterh[...] Tipburn sensitivityAt harvest maturity1
Glasshouse trial, butterh[...] Plant diameterAt harvest maturity, rela[...] 5
Glasshouse trial, butterh[...] Leaf shape(1=narrow elliptic,2=el.,[...] 4
Glasshouse trial, butterh[...] Side shoot formation tendAt harvest maturity1
Tests with 14 NL and 6 Cz[...] Bremia lactucaeResistance to B. lactucae[...] 9
Glasshouse trial, butterh[...] Leaf anthocyanin contentAt harvest maturity2
Glasshouse trial, butterh[...] Leaf venationAt harvest maturity (1= n[...] 1
Multiplication. 8 or 16 p[...] Flower color(1=yellow, 2=blue)1
Tests with 14 NL and 6 Cz[...] Bremia lactucaeResistance to B. lactucae[...] 0
Glasshouse trial, butterh[...] Bolting timeCount the days from sowin[...] 140
Glasshouse trial, butterh[...] Head heightAt harvest maturity, rela[...] 3
Lettuce variety descripti[...] Leaf anthocyanin coloration(1=absent, 9=present)9
Glasshouse trial, butterh[...] Seedling anthocyanin cont(1=not present,9=present)9
Multiplication. 8 or 16 p[...] Seedling anthocyanin cont(1=not present,9=present)1
Multiplication. 8 or 16 p[...] Flowering timeGibberellin. Count days f[...] 4
Glasshouse trial, butterh[...] Leaf anthocyanin patternAt harvest maturity (0=no[...] 1
Tests with 14 NL and 6 Cz[...] Bremia lactucaeResistance to B. lactucae[...] 0
Glasshouse trial, butterh[...] Leaf color(1=yellow, 2=green, 3=gra[...] 2
Glasshouse trial, butterh[...] Harvest timeCount the days between so[...] 111
Multiplication. 8 or 16 p[...] Flower anthocyanin content(1=not present,9=present)9
Glasshouse trial, butterh[...] Head leaves overlapAt harvest maturity (1= n[...] 4
Glasshouse trial, butterh[...] Leaf anthocyanin distributionAt harvest maturity (0=no[...] 1
Old filed observations.Seed color(1=white,2=black,3=varieg[...] 1
Multiplication. 8 or 16 p[...] Seed harvest timeGibberellin. Count days f[...] 8
Tests with 14 NL and 6 Cz[...] Bremia lactucaeResistance to B. lactucae[...] 9
Lettuce variety descripti[...] Seed color1 = white, 2 = yellow, 3 [...] 1
Glasshouse trial, butterh[...] Leaf color intensity(3=light, 5=medium, 7=dar[...] 4
Glasshouse trial, butterh[...] Leaf blisteringAt harvest maturity4
Glasshouse trial, butterh[...] Head shapeAt harvest maturity, in l[...] 3
Glasshouse trial, butterh[...] Leaf margin undulationAt harvest maturity3
Glasshouse trial, butterh[...] Leaf divisionAt harvest maturity (1=0,[...] 1
Glasshouse trial, butterh[...] Seedling cotyledon shape(1=narrow elliptical, 2= [...] 2
Multiplication. 8 or 16 p[...] Seedling cotyledon shape(1=narrow elliptical, 2= [...] 2
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Experiment details

Experiment desciptionDataset remarkExperiment start yearExperiment end yearExperiment report
Old filed observations.Phenotypic data CGN1987
Test lettuce root aphid resist. Samples tested differ from CGN acces. Seedl. unif. vigor in 5cm pots, 19oC, mercury vapor, add. light to 16h. Inoc.: 2 weeks aft. potting, 1 newly mature virginoparous aphid /pl. on roots. Scored 2 w. later.Phenotypic data CGN1980
Tests with 14 NL and 6 Czechoslovakian races. 20 Seedling or 5 leaf discs on moistened filter paper. Inoc.5E4 sp/ml. Temp 15oC. Scored after 8-12d. Accessions heterogeneous to NL1 or NL3: only resistant plants were scored for other races. RPhenotypic data CGN1989
Glasshouse trial, butterhead lettuce. Sowing date 28/12/95, planting date 15/2. 17 reference varieties, 40 pl/object. Planting distance 25x27. Location glashouse 10,dep.6.Phenotypic data CGN1996
Multiplication. 8 or 16 plants per object. Vernalisation date 24/2/97, sowing date 7/4/97, planting date 28/4/97.Phenotypic data CGN1997
Lettuce variety descriptions made available by the Netherlands Inspection Service for Horticulture up and until 2013. Descriptions are included for varieties that matched the CGN accession name.Phenotypic data CGN2013
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