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TitleThe International Plant Genetic Resources Institute (IPGRI) is an
LanguageEnglish
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Total Pages63
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Page 31

6.1.18 Young leaf: density of erect hairs between veins [O-054, U-9] ( 6 . 1 . 1 6 )
[53-69] Recorded on the lower surface of the 4th distal unfolded leaf

0 Absent [O:1/U:1] Rupestris du Lot
1 Very sparse 140 Ruggeri
3 Sparse Chasselas blanc – B
5 Medium 3306 Couderc
7 Dense Riparia Scribner
9 Very dense Vitis cinerea

6 . 1 . 1 9 Young leaf: density of prostrate hairs on main veins [ O - 0 5 5 ] ( 6 . 1 . 1 7 )
[53-69] Recorded on the lower surface of the 4th distal leaf

0 Absent [O:1] Rupestris du Lot
1 Very sparse 140 Ruggeri
3 Sparse Carignan – N
5 Medium Cabernet Sauvignon – N, Sauvignon – B
7 Dense Meunier – N
9 Very dense

6.1.20 Young leaf: density of erect hairs on main veins [O-056] (6.1.18)
[53-69] Recorded on the lower surface of the 4th distal leaf

0 Absent [O:1] Rupestris du Lot
1 Very sparse 140 Ruggeri
3 Sparse 3309 Couderc
5 Medium Cinsaut – N, Riesling – B
7 Dense Riparia Scribner
9 Very dense Vitis cinerea

★ 6.1.21 Mature leaf: size of blade [O-065, U-19] (4.1.6)
[75-81] Recorded on mature leaves above the cluster within the medium third

of shoot
1 Very small Vitis rupestris
3 Small Gamay – N, Traminer – Rs
5 Medium Cabernet Sauvignon – N
7 Large Carignan – N
9 Very large Vitis coignetiae

★ 6.1.22 Mature leaf: shape of blade [O-067, U-20] (6.1.20)
[75-81] See Fig. 7

1 Cordate Vitis cordifolia
2 Wedge-shaped Vitis riparia ‘Gloire de Montpellier’
3 Pentagonal Chasselas blanc – B
4 Circular Clairette – B
5 Reniform Rupestris du Lot
99 Other (specify in descriptor 6.3 Notes)

26 Descriptors for Grapevine

Page 32

Fig. 7. Mature leaf: shape of blade

★ 6.1.23 Mature leaf: number of lobes [O-068, U-21] (4.1.7)
[75-81] A lobe is that part of the leaf which lies between two leaf sinuses. Aleaf

sinus results from a clear interruption of teeth on the leaf margin. See
Fig. 8
1 Entire leaf (none) Chardonnay – B
2 Three Chenin – B
3 Five Chasselas blanc – B
4 Seven Cabernet Sauvignon – N
5 More than seven Hebron – B

Fig. 8. Mature leaf: number of lobes (L)

Characterization 27

54321

L2 L2

L2 L2

L2
L2

L2 L2

L1

L1

L1 L1

L3

L3

L3
L3

L3

L3

L4L4

L4
L4

L5 L554

321

Page 63

ACKNOWLEDGEMENTS

IPGRI wishes to place on record their sincere thanks to the numerous grapevine workers around
the world who have contributed directly or indirectly to the development of Descriptors for
Grapevine.

Ms Adriana Alercia supervised and coordinated the production of the text up to the pre-
publication stage and provided scientific and technical expertise. Ms Linda Sears edited the
text, and Ms Patrizia Tazza designed the cover and prepared the layout. Mr Paul Stapleton
managed the production of the publication. Ir. Tom Hazekamp provided scientific direction
and supervised the overall production.

The following IPGRI staff provided substantial technical advice: Drs M. Diekmann,
F. Engelmann and T. Hodgkin.

58 Descriptors for Grapevine

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