QTL mapping of high digestibility trait in sorghum bicolor (L.) Moench /
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| Other Authors: | |
| Format: | Thesis eBook |
| Language: | English |
| Published: |
[College Station, Tex.] :
[Texas A&M University],
[2010]
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| Online Access: | Link to OAK Trust copy |
| Abstract: | As compared with other cereal grains, Sorghum bicolor shows very low levels of protein digestibility when exposed to proteolytic enzymes. Protein digestibility further decreases when sorghum is cooked. It is speculated that low digestibility is the result of extensive disulfide crosslinking in the [beta]- and [gamma]-kafirins (storage proteins) surrounding the endosperm protein bodies. The degree of crosslinking increases as sorghum is cooked, causing the highly digestible [alpha]-kafirins found at the interior of protein bodies to be locked within a tightly bound capsule, inaccessible to digestive enzymes. In this research project, two major QTLs were found to be associated with protein digestibility--one QTL unfavorably affecting digestibility and one QTL favorably affecting digestibility. By identifying the QTLs and the linked markers corresponding to the highly digestible trait, breeders will be able to use marker-assisted selection to quickly and accurately identify highly digestible lines to advance in a breeding program. |
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| Item Description: | "Major Subject: Plant Breeding" Title from author supplied metadata (automated record created 2010-03-12 12:08:51). Electronic resource. |
| Physical Description: | 1 online resource. |
| Bibliography: | Includes bibliographical references. |