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Characterization of genetic diversity of puroindoline genes in Mexican wheat landraces

By: Ayala, M.
Contributor(s): Alvarez, J.B [coaut.] | Guzman, C | Peña-Bautista, R.J [coaut.].
Material type: materialTypeLabelArticlePublisher: 2013ISSN: 1573-5060 (Revista en electrónico); 0014-2336.Subject(s): common wheat | Friabilin | genetic variability | Grain texture In: Euphytica v. 190, no. 1, p. 53-63Summary: Grain hardness is a major factor determining milling performance of common wheat. It determines the amount of damaged starch generated during milling, and therefore the end use of a given variety. One hundred and two lines from 15 Mexican wheat landraces were analyzed for grain hardness and for its genetic control. Sixteen lines were hard and 86 were soft-textured. All hard lines could be explained by a mutation in either the Pina-D1 or Pinb-D1 genes. In six hard lines there was no amplification of Pina-D1, suggesting that this gene was deleted (Pina-D1b allele). The remaining ten hard lines showed the presence of both Pina-D1 and Pinb-D1. Sequencing the Pinb-D1 genes of the hard lines revealed the presence of two different alleles (Pinb-D1b and Pinb-D1e). The results substantiate the importance of very old Mexican landraces as potential sources of genetic diversity for key quality traits in the development of modern wheat cultivars with different grain textures.Collection: CIMMYT Staff Publications Collection
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Item type Current location Collection Call number Status Date due Barcode Item holds
Article CIMMYT Knowledge Center: John Woolston Library

Lic. Jose Juan Caballero Flores

 

CIMMYT Staff Publications Collection CIS-6821 (Browse shelf) Available
Total holds: 0

Peer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=0014-2336

Grain hardness is a major factor determining milling performance of common wheat. It determines the amount of damaged starch generated during milling, and therefore the end use of a given variety. One hundred and two lines from 15 Mexican wheat landraces were analyzed for grain hardness and for its genetic control. Sixteen lines were hard and 86 were soft-textured. All hard lines could be explained by a mutation in either the Pina-D1 or Pinb-D1 genes. In six hard lines there was no amplification of Pina-D1, suggesting that this gene was deleted (Pina-D1b allele). The remaining ten hard lines showed the presence of both Pina-D1 and Pinb-D1. Sequencing the Pinb-D1 genes of the hard lines revealed the presence of two different alleles (Pinb-D1b and Pinb-D1e). The results substantiate the importance of very old Mexican landraces as potential sources of genetic diversity for key quality traits in the development of modern wheat cultivars with different grain textures.

Global Wheat Program

English

CIMMYT Informa No. 1808|Springer

Lucia Segura

INT0368|INT3466

CIMMYT Staff Publications Collection

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