Abstract
Shepherdia rotundifolia Parry (roundleaf buffaloberry), a shrub endemic to the U.S. Colorado Plateau high desert, has aesthetic and drought tolerance qualities desirable for low-water urban landscapes. However, slow growth and too often fatal sensitivity to wet or disturbed soil stymies nursery production and urban landscape use. The goal of this study was to create an interspecific hybrid between the evergreen-xeric S. rotundifolia and its widely adapted, fast-growing, deciduous relative Shepherdia argentea (silver buffaloberry) distributed in western North America riparian habitats. Genetics and leaf morphology of the resulting S. argentea × S. rotundifolia hybrid are described and compared with the parents, as well as hybrid gas exchange as a reasonable proxy for growth rate and potential tolerance of poor soil. Hybrid genotypes were heterogenous, but contained an intermediate and equal contribution of alleles from genetically heterogenous parent populations. Leaf morphology traits were also intermediate between both parents. Aesthetic leaf qualities (silver-blue color and revolute margins) sought from S. rotundifolia were conserved in all offspring. However, gas exchange responses varied widely between the two surviving hybrids. Both hybrids showed greater tolerance of wet, fertile substrate—and promise for use in low-water landscapes—than S. rotundifolia . However, one hybrid conserved faster growth, and by inference possibly greater tolerance of wet or disturbed soil, from S. argentea , while the opposite was observed in the second hybrid. Following botanical nomenclature, we named this hybrid Shepherdia × utahensis .
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Claims 9
Claim · model-written summary
Hybrid genotypes had intermediate, equal allele contributions from heterogeneous parents.
Verbatim
e0“Hybrid genotypes were heterogenous, but contained an intermediate and equal contribution of alleles from genetically heterogenous parent populations.”
t0“Interspecific Hybrid of Xeric Shepherdia rotundifolia and Riparian Shepherdia argentea: Description, and Traits Suitable for Low-water Urban Landscapes”
Claim · model-written summary
Hybrid leaf morphology was intermediate between both parents.
Verbatim
e0“Leaf morphology traits were also intermediate between both parents.”
t0“Interspecific Hybrid of Xeric Shepherdia rotundifolia and Riparian Shepherdia argentea: Description, and Traits Suitable for Low-water Urban Landscapes”
Claim · model-written summary
All hybrid offspring retained silver-blue leaf color and revolute margins.
Verbatim
e0“Aesthetic leaf qualities (silver-blue color and revolute margins) sought from S. rotundifolia were conserved in all offspring.”
t0“Interspecific Hybrid of Xeric Shepherdia rotundifolia and Riparian Shepherdia argentea: Description, and Traits Suitable for Low-water Urban Landscapes”
Claim · model-written summary
Gas exchange responses varied widely between the two surviving hybrids.
Verbatim
e0“However, gas exchange responses varied widely between the two surviving hybrids.”
t0“Interspecific Hybrid of Xeric Shepherdia rotundifolia and Riparian Shepherdia argentea: Description, and Traits Suitable for Low-water Urban Landscapes”
Claim · model-written summary
Both hybrids had greater tolerance of wet, fertile substrate than S. rotundifolia.
Verbatim
e0“Both hybrids showed greater tolerance of wet, fertile substrate—and promise for use in low-water landscapes—than S. rotundifolia .”
t0“Interspecific Hybrid of Xeric Shepherdia rotundifolia and Riparian Shepherdia argentea: Description, and Traits Suitable for Low-water Urban Landscapes”
Claim · model-written summary
One hybrid retained faster growth from S. argentea.
- Taxon
- S. argentea
Shepherdia argenteae0 - Material
- one hybride0
- Outcome
- growthe0
- Direction
- fastere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“However, one hybrid conserved faster growth, and by inference possibly greater tolerance of wet or disturbed soil, from S. argentea , while the opposite was observed in the second hybrid.”
t0“Interspecific Hybrid of Xeric Shepherdia rotundifolia and Riparian Shepherdia argentea: Description, and Traits Suitable for Low-water Urban Landscapes”
Claim · model-written summary
The second hybrid showed the opposite growth response.
- Taxon
- S. argenteaShepherdia argenteae0
- Material
- second hybride0
- Outcome
- growthe0
- Direction
- oppositee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“However, one hybrid conserved faster growth, and by inference possibly greater tolerance of wet or disturbed soil, from S. argentea , while the opposite was observed in the second hybrid.”
t0“Interspecific Hybrid of Xeric Shepherdia rotundifolia and Riparian Shepherdia argentea: Description, and Traits Suitable for Low-water Urban Landscapes”
Claim · model-written summary
Faster growth in one hybrid possibly indicated greater tolerance of wet or disturbed soil.
- Taxon
- S. argenteaShepherdia argenteae0
- Material
- one hybride0
- Outcome
- tolerance of wet or disturbed soile0
- Direction
- greatere0
- Qualifier
- possiblye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“However, one hybrid conserved faster growth, and by inference possibly greater tolerance of wet or disturbed soil, from S. argentea , while the opposite was observed in the second hybrid.”
t0“Interspecific Hybrid of Xeric Shepherdia rotundifolia and Riparian Shepherdia argentea: Description, and Traits Suitable for Low-water Urban Landscapes”
Claim · model-written summary
The interspecific hybrid was named Shepherdia × utahensis.
Verbatim
e0“Following botanical nomenclature, we named this hybrid Shepherdia × utahensis .”
t0“Interspecific Hybrid of Xeric Shepherdia rotundifolia and Riparian Shepherdia argentea: Description, and Traits Suitable for Low-water Urban Landscapes”