Abstract
Cytogenetic investigation of microsporogenesis in Agropyron sericeum, Hordeum jubatum, their spontaneous hybrid, Agrohordeum pilosilemma, its amphiploid, and the backcross of the amphiploid to A. sericeum, B1, elucidated the genome relationships of A. sericeum and H. jubatum. The tetraploid parental species share a partially homologous genome which affects the pairing relationships evidenced in their hybrids. The genome formulae assigned to these plants are: A. sericeum, A“A”BB; H. jubatum, AAA'A‘; Agrohordeum pilosilemma, AA'A“B; the amphiploid, AAA'A‘A”A“BB; and B1, AA'A”A“BB. Observed pairing configurations were compatible with the expected maximum pairing configurations predicted under the assumption of genetic control of pairing with dosage effects. This is interpreted as further support for the hypothesis that pairing in the hybrids of H. jubatum is controlled by the A genome, one dose of A allowing homeologous pairing and two doses of A promoting homeologous association.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 4
Claim · model-written summary
The tetraploid parents share a partially homologous genome affecting hybrid pairing.
Verbatim
e0“The tetraploid parental species share a partially homologous genome which affects the pairing relationships evidenced in their hybrids.”
Claim · model-written summary
Genome formulae were assigned to the parents and hybrids.
Verbatim
e0“The genome formulae assigned to these plants are: A. sericeum, A“A”BB; H. jubatum, AAA'A‘; Agrohordeum pilosilemma, AA'A“B; the amphiploid, AAA'A‘A”A“BB; and B1, AA'A”A“BB.”
Claim · model-written summary
Observed pairing configurations agreed with the predicted maxima under dosage-dependent genetic control.
- Taxon
- Hordeum jubatum
.jpg?width=60)
Hordeum jubatumt0 - Outcome
- pairing configurationse0
- Comparator
- expected maximum pairing configurationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Observed pairing configurations were compatible with the expected maximum pairing configurations predicted under the assumption of genetic control of pairing with dosage effects.”
t0“Hordeum jubatum”
Claim · model-written summary
The authors interpret pairing as controlled by the A genome with dose-dependent homeologous pairing.
- Taxon
- H. jubatumHordeum jubatume0
- Gene
- A genomee0
- Outcome
- homeologous pairinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pairing in the hybrids of H. jubatum is controlled by the A genome, one dose of A allowing homeologous pairing and two doses of A promoting homeologous association.”