| |
| DOI: | 10.2135/cropsci2005.0148 |
|---|
| Web URL(s): | https://dl.sciencesocieties.org/publications/cs/articles/46/1/105
Last checked: 11/16/2016
Access conditions: Item is within a limited-access website
https://dl.sciencesocieties.org/publications/cs/pdfs/46/1/105
Last checked: 11/16/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
|---|
| Publication Type:
| Refereed |
|---|
| Author(s): | Jensen, Kevin B.;
Larson, Steven R.;
Waldron, Blair L.;
Asay, Kay H. |
|---|
| Author Affiliation: | USDA-ARS, Forage and Range Research Labratory, Utah State University, Logan, Utah |
|---|
| Title: | Cytogenic and molecular characterization of hybrids between 6x, 4x, and 2x ploidy levels in crested wheatgrass |
|---|
| Section: | Crop breeding, genetics and cytology
Other records with the "Crop breeding, genetics and cytology" Section
|
|---|
| Source: | Crop Science. Vol. 46, No. 1, January/February 2006, p. 105-112. |
|---|
| Publishing Information: | Madison, WI: Crop Science Society of America |
|---|
| # of Pages: | 8 |
|---|
| Related Web URL: | https://dl.sciencesocieties.org/publications/cs/abstracts/46/1/105
Last checked: 11/16/2016
Notes: Abstract only |
|---|
| Keywords: | TIC Keywords: Cytogenetics; Molecular genetics; Agropyron cristatum; Agropyron desertorum; Hybrids; Ploidy; Amplification fragment length polymorphisms; Cultivar improvement; Cross breeding
|
|---|
| Cultivar Names: | Hycrest |
|---|
| Abstract/Contents: | "The crested wheatgrass cultivar `Hycrest,' which consists of germplasm from an induced tetraploid of Agropuron cristatum (2n = 4x = 28) (L.) Gaertn. and a natural tetraploid (2n = 4x = 28) of A. desertorum (Fisch. Ex Link) Schultes, was hybridized with a promising broadleaf hexaploid (6x-BL; 2n = 6x = 42) accession of A. cristatum from the USSR. The goal was to combine the wide leaf characteristics and green color retention from the 6x-BL parent into a common gene pool. The crossability between Hycrest (4x) and 6x-BL (6x) was excellent; however, chromosome pairing was irregular and chromosome numbers ranged from 2n = 27 to 41. Leaf morphology in Hycrest/6x-BL hybrids was intermediate to that of the parents. Selected F1 pentaploid progenies (2n = 5x = 35), with leaf widths approaching that of the 6x-BL parent, were backcrossed to Hycrest (Hycrest*2/6x-BL), and then crossed among themselves (Hycrest*2/6x-BL//Hycrest*2/6x-BL). In the backcross hybrid, chromosome numbers ranged from 2n = 28 to 39. Meiotically, 28 chromosome backcross hybrid plants were more stable than aneuploid backcross hybrids. The broadleaf character was readily detected in the backcross progeny. In Hycrest/6x-BL//Hycrest/6x-BL hybrids, chromosome numbers ranged from 2n = 33 to 45. Despite the hybrid origin, all aneuploid hybrids had an increased number of univalents and chromosome associations that involved more than four chromosomes. AFLP analysis reflected genic introgression from the 6x-BL parent beyond that observed in Hycrest. Results support earlier conclusions that the crested wheatgrass complex should be treated as a common gene pool." |
|---|
| Language: | English |
|---|
| References: | 36 |
|---|
| Note: | Figures
Tables |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Jensen, K. B., B. L. Waldron, K. H. Asay, and S. R. Larson. 2006. Cytogenic and molecular characterization of hybrids between 6x, 4x, and 2x ploidy levels in crested wheatgrass. Crop Sci. 46(1):p. 105-112. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=109545 |
| If there are problems with this record, send us feedback about record 109545. |
| Choices for finding the above item: |
|---|
| DOI: 10.2135/cropsci2005.0148 |
| Web URL(s):
https://dl.sciencesocieties.org/publications/cs/articles/46/1/105
Last checked: 11/16/2016
Access conditions: Item is within a limited-access website
https://dl.sciencesocieties.org/publications/cs/pdfs/46/1/105
Last checked: 11/16/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
| 
MSU catalog number: SB 183 .C7 |
| Find from within TIC:
Digitally in TIC by record number. |
| Request through your local library's inter-library loan service (bring or send a copy of this TGIF record) |
