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NRC for Grapes | Annual Report 2006-07
1.5 Screening for wine and juice quality and yield
Nine wine varieties (3 years age) were characterized for their juice characteristics to assess their
suitability for wine making under tropical conditions. Among the 4 white varieties EC 27818 gave
maximum yield (7.4 kg/vine), followed by Symphony and Sauvignon Blanc. Mean bunch weight was
maximum in Symphony however, maximum juice yield was recorded in EC27818. Among the
coloured varieties Shiraz gave maximum yield with good must quality comprises TSS (20 B), acidity
(0.75%) and pH (3.10). Athens and Cabernet Sauvignon were good yielders with high TSS along
with moderate acidity but slightly high pH (table 4).
Table 4. Yield and Must characteristics of wine varieties at NRC for Grapes
Sl.
No.
Variety
Yield
per vine
(kg)
Mean
bunch
wt. (g)
Juice
(%)
TSS
(°brix)
Acidity
(%)
pH
Remarks
1. EC 27818 (Yugoslavia) (w) 7.4 105 86 20.2 0.48 3.45 White
2. Symphony (w) 5.5 210 52 19.0 0.67 3.40 White
3. Chardonnay (w) 3.3 103 59 22.0 0.70 3.50 White
4. Sauvignon Blanc (w) 4.9 165 54 22.0 0.84 3.10 White
5. Cabernet Sauvignon 7.5 105 84 21.0 0.60 3.50 Red
6. Merlot 5.5 195 68 20.8 0.70 3.60 Red
7. Shiraz 8.7 205 84 20.0 0.75 3.30 Red
8. Athens 8.0 165 74 20.0 0.71 3.50 Red
9. Zinfandel 5.6 125 70 21.2 0.90 3.30 Rose
CD at 5% 2.1 22 4.8 1.8 0.18 0.20
Programme 2.
Germplasm utilization and genetic enhancement
2.2 Breeding for high production and quality
2.2.1 Breeding for high production and quality in table grapes
Hybrids obtained from crossings of previous year were field evaluated. The main features of some of
the promising hybrids are as follows:
1. Pusa Navrang x Flame Seedless-1 : Teinturier, late
ripening medium berry size, crisp pulp, low seed content
and muscat flavour. It has potential for 2 crops per year.
2. Pusa Navrang x Flame Seedless-2 : Teinturier, bold
berries, early ripening, muscat flavour.
3. Pusa Navrang x Flame Seedless-3 : Bold berries,
non-teinturier type brilliant red colour fruits, attractive
bunch and berries. Crisp pulp and muscat flavour early
ripening and has good keeping quality. Berry adherence
is good and tolerant to berry splitting.
Pusa Navrang x Flame Seedless
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