Page 66 - Grapevine MayJune 2021_REV

Around The Vineyard

the SDI locus for seedlessness. The leaves of this
selection have no incidence of powdery mildew.
The yellow berries are 2.3 g each, and clusters are
92.33 g. Due to polar vortex in 2014 and 2019, this
vine has not produced much fruit in USDA Zone 4.
Primary clusters are large, but secondary buds or
latent buds reliably produce smaller clusters. This
is an earlier variety with harvest around the second
week of September, 21.8 °Brix and total acidity of
6.69 g/l.

VB9276-01 Wine
described with mus-
cat with floral notes
including lilac and Fine Mapping Family MN 1264 x MN 1246 We
tropical fruits like developed this population of nearly 1000 individu-
banana. This selec- als in order to fine map important traits that were
tion is a cross of VB previously mapped in our GE1025 population (Teh
86-4 and Frontenac. et al. 2017, Clark et al. 2018). We are currently
Selected for white evaluating this population for resistance to pow-
wine, this selection dery mildew, foliar phylloxera, and the presence
has relatively low titratable acidity compared to of leaf trichomes. This planting was established
other cold hardy hybrids at 7.11 g/l. The berries are in 2019 at the Horticultural Research Center and
smaller like ‘Frontenac’ and the bunches are loose should produce its first fruit for evaluation in 2020.
like that parent as well. This selection is susceptible We hope to use this population to improve our
to black rot and powdery mildew. It is marginally understanding of fruit color, bunch architecture,
hardy in our Zone 4 conditions. flower sex, and fruit quality traits such as hybrid
flavors.
GE9913-01 This
selection is an off- Funding for VitisGen2 is provided by a Specialty
spring of the above Crop Research Initiative Competitive Grant,
(VB9276-01) crossed Award No. 2017- 51181-26829, of the USDA
with ‘La Crescent’. National Institute of Food and Agriculture.
Unfortunately it
demonstrates severe Follow us on Twitter for project updates and webi-
susceptibility of leaves nar announcements @VitisGen
to downy mildew.
However, the fruit Email Tim Martinson at tem2@cornell.edu
appear to be immune, which is the same in ‘La with any questions or comments about
Crescent’. Despite having muscat ancestors, this the program or webpage.
selection is more neutral in its flavor profile, not
demonstrating hybrid or muscat characteristics.
This wine is described like Sauvignon blanc. It is
grassy, green fruit, with aromas of peach and citrus.
This selection is not suitable for Zone 4 conditions
without additional winter protection. It may also
benefit from a longer, warmer growing season fur-
ther south.

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