. . .
 

Flue-cured
Disease resistances
Agronomic traits
Variety**
Date intro. in crop
Black root rot (1)
PVY (2)
Leaf maturity (3)
Yield potential (4)
Quality of product after curing (4)
ITB30
1988
S
S
6
8
7
VD*
1988
S
R
7
8
7
ITB3413
1992
S
S
10
8
9
ITB3304
1992
R
R
6
9
7
ITB3308
1994
S
S
8
7
7
ITB3003
1995
S
S
9
8
8
ITB31612
1996
R
S
9
9
9
ITB33024
1998
R
R
8
9
8
ITB30804
1999
R
R
9
8
9
ITB30808
2000
R
R
7
10
8
ITB609
2000
R
R
8
9
9
ITB620
2001
R
R
9
10
9
ITB623
2002
R
R
9
10
9
*
First flue-cured variety cultivated in France, German origin, presented as reference.
**
Varieties highlighted in brown are male-steriles.
(1)
Resistance confer a quasi immunity to the fungusChalara elegans (Thielaviopsis basicola), agent of the black root rot.
(2)
Resistance to vein necrosis veins caused by the PVYn strains (Necrotic Virus Y of Potato) most widespread on tobacco in France.
(3)
Varieties are classified on a scale from 1 to 10, 10 being earliest. Precocity is estimated by the average number of days between plantation and beginning of maturation of leaves.
(4)
Varieties are classified on a scale from 1 to 10, 10 being the best potential. Quality criteria are related to the physical aspect (colour, homogeneity, leaf body) and chemical (lower tar potential, chemical balance corresponding to the standard specifications).
 

 

 
ITB 623