Abstract
Agropyron scribneri Vasey (spreading wheatgrass) is endemic to the Rocky Mountains of the Intermountain West. Each distinct population is widely separeated by valley and desert floors. It is morphologically similar to the hybrid between Agropyron trachycaulum (Link) Malte and Sitanion hystrix between Agropyron trachycaulum (Link) Malte and Sitanion hystrix (Nutt.) J. G. Smith as well as the hybrid, A. trachycaulum x A. scribneri. It appears that A. scribneri may have originated de novo from hybidization products of A. trachycaulum and S. hystrix. Agropyron scribneri appears to be morphologically similar to the population of S. hysterix with which it is associated. There is some fertility in the A. trachycaulum x S. hysterix hybrids, and back-crossing onto both A. trachucaulum and S. hysterix is common. Sterile backcross derivatives, (A. trachycaulum x S. hysterix) x S. hysterix, were found which possess characters similar to A. scribneri and which phenotypically resemble A. scribneri. These are considered to be stabilized hybrid segregants which indicate that the incipient formation of A. scribneri is in progress.
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Claims 9
Claim · model-written summary
Agropyron scribneri is endemic to the Rocky Mountains of the Intermountain West, with populations separated by valleys and desert floors.
Verbatim
e0“Agropyron scribneri Vasey (spreading wheatgrass) is endemic to the Rocky Mountains of the Intermountain West. Each distinct population is widely separeated by valley and desert floors.”
Claim · model-written summary
A. scribneri is morphologically similar to the A. trachycaulum–Sitanion hystrix hybrid and to the A. trachycaulum x A. scribneri hybrid.
- Taxon
- Agropyron scribnerit0
- Outcome
- morphologically similare0
- Comparator
- A. trachycaulum x A. scribnerie0
Not reportedDirection
Verbatim
e0“It is morphologically similar to the hybrid between Agropyron trachycaulum (Link) Malte and Sitanion hystrix between Agropyron trachycaulum (Link) Malte and Sitanion hystrix (Nutt.) J. G. Smith as well as the hybrid, A. trachycaulum x A. scribneri.”
t0“Agropyron scribneri”
Claim · model-written summary
A. scribneri may have originated de novo from hybridization products of A. trachycaulum and S. hystrix.
Verbatim
e0“It appears that A. scribneri may have originated de novo from hybidization products of A. trachycaulum and S. hystrix.”
Claim · model-written summary
Agropyron scribneri appears morphologically similar to its associated S. hysterix population.
Not reportedDirection
Verbatim
e0“Agropyron scribneri appears to be morphologically similar to the population of S. hysterix with which it is associated.”
Claim · model-written summary
A. trachycaulum x S. hysterix hybrids have some fertility.
- Taxon
- A. trachycaulum x S. hysterix
Elymus trachycauluse0 - Outcome
- some fertilitye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There is some fertility in the A. trachycaulum x S. hysterix hybrids, and back-crossing onto both A. trachucaulum and S. hysterix is common.”
Claim · model-written summary
Backcrossing of hybrids onto A. trachucaulum is common.
Not reportedDirection
Verbatim
e0“There is some fertility in the A. trachycaulum x S. hysterix hybrids, and back-crossing onto both A. trachucaulum and S. hysterix is common.”
Claim · model-written summary
Backcrossing of hybrids onto S. hysterix is common.
Not reportedDirection
Verbatim
e0“There is some fertility in the A. trachycaulum x S. hysterix hybrids, and back-crossing onto both A. trachucaulum and S. hysterix is common.”
Claim · model-written summary
Sterile backcross derivatives resembled A. scribneri phenotypically.
- Taxon
- (A. trachycaulum x S. hysterix) x S. hysterixElymus trachycauluse0
- Outcome
- phenotypically resemble A. scribnerie0
- Qualifier
- Sterilee0
- Comparator
- A. scribnerie0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sterile backcross derivatives, (A. trachycaulum x S. hysterix) x S. hysterix, were found which possess characters similar to A. scribneri and which phenotypically resemble A. scribneri.”
Claim · model-written summary
The derivatives are interpreted as stabilized hybrid segregants indicating incipient A. scribneri formation.
Verbatim
e0“These are considered to be stabilized hybrid segregants which indicate that the incipient formation of A. scribneri is in progress.”