Barley is one of the world's most important food and feed crops. It is adapted to a wide range of environments. According to Harlan and Martini (1936) barley is grown from north of the Artic Circle to the sands of the Sahara, and from the slopes of Mt. Everest to the lower delta of the Nile.
Considerable progress has been made in its improvement through plant breeding. Barley is one of the best cultivated crop plants for use in genetic studies. It is a diploid plant from the family Gramineae with seven pairs of chromosomes. The cultivated species are interfertile and have a large number of readily distinguishable genetic characters. Approximately 370 characters are recognized (Nilan, 1964).
Many of Barley's genes have been mapped and assigned to one of the seven chromosomes. Linkage groups in barley have been designated in a number of ways. A Roman numeral was used extensively in the earlier studies to identify each linkage group. More recently an Arabic number system has been used. This system was adopted by the Fourth Annual Barley Research Worker's Conference and will be followed in this study.
The study involves 24 contrasting factors and was undertaken to determine the location of certain genes already reported in specific linkage groups and, if possible, to assign several previously unassigned genes to linkage groups. Of the 24 factor pairs studied, six have not yet been assigned to a chromosome. The inheritance and linkage associations of these unassigned genes receive major emphasis in this study.
| Identifer | oai:union.ndltd.org:UTAHS/oai:digitalcommons.usu.edu:etd-3864 |
| Date | 01 May 1966 |
| Creators | Tehrani, Parichehr Ahmadian |
| Publisher | DigitalCommons@USU |
| Source Sets | Utah State University |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | All Graduate Theses and Dissertations |
| Rights | Copyright for this work is held by the author. Transmission or reproduction of materials protected by copyright beyond that allowed by fair use requires the written permission of the copyright owners. Works not in the public domain cannot be commercially exploited without permission of the copyright owner. Responsibility for any use rests exclusively with the user. For more information contact Andrew Wesolek (andrew.wesolek@usu.edu). |
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