This study reports finding of two rootstock experiments planted in
1997. The purpose of the first experiment was to evaluate the
performance of Pinot noir on 19 phylloxera-resistant rootstocks and as an
ungrafted vine. The purpose of the second experiment was to evaluate
the performance of V. Vinifera cultivars Pinot noir, Chardonnay, Pinot gris
and Merlot grafted to nine phylloxera-resistant rootstock, and as ungrafted
vines. Data for both experiments were collected in 2000 and 2001, the
fourth and fifth years of establishment respectively. Vines received
supplemental irrigation and were fertilized with N-P-K during both
seasons. In the first experiment, rootstock affected vegetative growth,
chlorophyll content, yield, cluster weight and berry weight in both years,
gas exchange measurements in 2000, and fruit composition in 2001. Of
the V. riparia x V. rupestris rootstocks, 3309C and Schwarzmann imparted
low to moderate vigor, as reflected by pruning weight. 101-14 Mgt
imparted higher vigor to Pinot noir than 3309C. Based on ripening index
values (soluble solids/titratable acidity, Brix/TA), ripening appeared to be
earlier for vines grafted to 101-14 Mgt and Schwarzmann than for 3309C. The V. berfandieri x V. riparia rootstocks, including 161-49C and 420A,
imparted average to higher than average vigor. Ripening appeared to be
later than average and berries larger than average for vines grafted to
these rootstocks. With the exception of 110R, the V. berlandieri x V.
rupestris rootstocks had higher than average vigor. Ripening times
seemed to be average and berry weights were higher than average for
vines grafted to these rootstocks. Of the remaining-rootstocks 1616C
performed much like the V. berlandieri x V. rupestris rootstocks with an
even higher ripening index. Borner, Riparia Gloire, 44-53 Malegue and
Gravesac all imparted low to moderate vigor. Berry weights tended to be
average to lower than average. Riparia Gloire and Gravesac seemed to
impart earlier ripening, while Borner and 44-53 Malegue did not. In the
second experiment, the V. berlandieri x V. riparia rootstocks imparted
more vigor, a higher yield, a higher berry weight and delayed ripening as
reflected by the ripening index. 101-14 Mgt imparted a higher pruning
weight, lower berry weight and earlier ripening than 3309C. 110R, 44-53
Malegue and Gravesac conferred moderate vigor as reflected by pruning
weight. Riparia Gloire conferred lower vigor. Ripening times imparted by
these rootstocks ranged from early for Riparia Gloire and Gravesac, to
average for 110R and later for 44-53 Malegue. Berry weights were
average for scion grafted to 110R and Gravesac, and low for scion grafted
to Riparia Gloire and 44-53 Malegue. / Graduation date: 2002
| Identifer | oai:union.ndltd.org:ORGSU/oai:ir.library.oregonstate.edu:1957/23712 |
| Date | 02 May 2002 |
| Creators | Shaffer, Raymond Glen |
| Contributors | Vasconcelos, Carmo |
| Source Sets | Oregon State University |
| Language | en_US |
| Detected Language | English |
| Type | Thesis/Dissertation |
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