Propagation

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Breeding Penstemon and Clematis
University of Nebraska-Lincoln West Central
Research Extension Center North Platte,
Nebraska Dale Lindgren
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Methods Used in Plant Development
1. Selection from native populations. For
many species there is a large amount of
genetic variation. -Seedling
variation. -Mutations.
2. Bulk Population Selection
3. Controlled Crosses
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Penstemon grandiflorus
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Penstemon pinifolius
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Penstemon Pollination
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Schooleys Yellow (P. barbatus) X Prairie
Splendor (P. cobaea x P. triflorus)
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Husker Red Penstemon
Prairie Splendor Penstemon
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Anomalies
Anomalies
Anomalies
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General thoughts on the Genus Penstemon
1. Crosses between species in the same subsection
are relatively successful. However,
there is relatively little variability
in the progeny.
2. Crosses between species in different
subsections provide some of the most
interesting progeny.
3. Natural selection has been very effective in
developing species adapted to their
particular environment.
4. There are opportunities for breeding projects
in the genus Penstemon.
--flowering traits, foliage traits, adaptation,
disease reaction
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Cuttings
Division
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Penstemon haydenii
Penstemon grandiflorus
Penstemon barbatus
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Penstemon grandiflorus Prairie Snow
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Germination of Penstemon Seed
P. grandiflorus P.
strictus
____Stratification (weeks)_____ Age 0
8 0 8
1 5.5 25.0 3.5
27.5 2 13.5 29.0
23.5 47.5 3 11.5 24.5
42.5 30.0 4 20.5
29.0 43.5 51.0 5
7.5 0.5 44.0 29.5
6 5.0 0.0 28.5
21.5 7 0.5 2.0
14.0 10.0 8 1.5 1.0
8.0 4.5 9 0.0
0.0 1.5 0.0 10
1.0 0.0 0.0
0.0 years
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Clematis
Queen of Climbers
Clematis comes from the Greek word
klemameaning a vine branch.
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Clematis x Olga
Clematis x Henryi
offspring
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Clematis hexapetala
Clematis integrifolia
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Flower Types
There is a large variation in flower shape and
size.
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Foliage Variation
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Seed Heads
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Propagating your Clematis
Division Layering Cuttings Seed
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Thank you. Questions and/or Advice?
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Clematis hexapetala
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Trait Bare Soil
Vegetation Height(cm) 46-119
49-90
Stalks/plant 1-9
1-4 Pods/plant 11-172
3-90 Disease
4-5 1-3
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