Plants – Rose – Climber
Plant Patent
1999-09-13
2002-02-12
Campell, Bruce R. (Department: 1661)
Plants
Rose
Climber
Plant Patent
active
PP012400
ABSTRACT:
The present invention comprises a new and distinct cultivar of a birch tree, botanically known as
Betula papyrifera
, and is hereto referred to by the cultivar name ‘Cenci’.
BACKGROUND OF THE INVENTION
‘Cenci’ was discovered by the inventor in a group
Betula papyrifera
in a provenance test plot planted in Wooster, Ohio in 1986. ‘Cenci’ was originated from the open pollinated cross in a birch selection/breeding program on Evergreen Nursery Company property. The female parent was
Betula papyrifera
. The male parent is unknown. ‘Cenci’ was first noticed with a tight, oval, compact growth habit, white large, shaggy, persisting exfoliating bar and a high resistance to the Bronze Birch Borer. The cultivar has been asexually reproduced in Sturgeon Bay, Wis. and Wooster, Ohio. Presently, reproduction is accomplished by micropropagation or tissue culture propagation by the inventor from the initial selection in Sturgeon Bay, Wis. Horticultural examination of selected units has demonstrated that the combination of characteristics has herein disclosed for ‘Cenci’ are firmly fixed and retained through its successive generations of asexual reproduction. ‘Cenci’ has been observed in Sturgeon Bay, Wis., and Wooster, Ohio, since 1986 and characteristics have been stably maintained. The cultivar reproduced true to type. The new cultivar has not been observed under all possible environmental conditions. The phenotype may vary somewhat with variations in environment such as temperature, day length and light intensity, without a change in the genotype of the new cultivar. The following observations, measurements and comparisons describe the plants grown in Sturgeon Bay, Wis. under natural field conditions which approximate those generally used in commercial growing operations.
SUMMARY OF THE INVENTION
The following traits have been repeatedly observed and are determined to be basic characteristics of ‘Cenci’ which in combination distinguish this birch tree as a new and distinct cultivar:
1. Distinctive tight, oval, compact growth habit with a good central leader and branching angles about 35-40°.
2. Bark color changes as the tree matures; from brown turning to white.
3. White, large, shaggy, persisting exfoliating bark when mature.
4. High resistance to the Bronze Birch Borer.
5. Slow to moderate growth rate.
The new cultivar can be compared to the non patented
Betula papyrifera
for the foregoing characteristics differ from the nonpatented variety in that the nonparented variety has variable resistance to the Bronze Birch Borer, has a loose oval growth habit and the bark exfoliates in smaller pieces.
Campell Bruce R.
Drehkoff W. Dennis
Evergreen Nursery Company, Inc.
Ladas & Parry
McCormick Susan B.
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