Normal view MARC view ISBD view

Inheritance of threshability in synthetic hexaploid (Triticum turgidum x T. tauschii) by T. aestivum crosses

By: Villareal, R.L.
Contributor(s): Mujeeb-Kazi, A [coaut.] | Rajaram, S [coaut.].
Material type: materialTypeLabelArticlePublisher: 1996ISSN: 1439-0523 (Revista en electrónico).Subject(s): Disease resistance | Genetic inheritance | Hexaploidy AGROVOC | Research projects | Tilletia indica | Triticum aestivum | Triticum tauschii CIMMYTOnline resources: Access only for CIMMYT Staff In: Plant Breeding v. 115, no. 5, p. 407-409Summary: Triticum tauschii provides breeders with a valuable source of resistance and tolerance genes. Elucidation of the inheritance of traits in this species that hinder its use in breeding programmes is therefore of interest to wheat breeders. Inheritance of threshability was investigated in the crosses of four non-free-threshing (NFT) synthetic hexaploids (Triticum turgidum x T. tauschii) and two free-threshing(FT) T. aestivum cultivars during four crop seasons over 3 years at El Batan and Ciudad Obregon, Mexico. The parents, their F-1 hybrids and individual F-2 plant-derived F-3 progenies of the crosses revealed that 'Altar 84'/T. tauschii (219), 'Chen'/T. tauschii (205), 'Chen'/T. tauschii (224), and 'Duergand'/T. tauschii (214) have independently segregating loci with two dominant alleles controlling threshability. Intercrosses among the synthetics, except 'Altar 84'/T. tauschii(219), showed the genes to be allelic to each other. The cross between the FT cultivars showed no segregation in the F-3 generation, indicating common recessive genes. Based on these findings, population sizes of the synthetic-derived breeding materials should be increased to improve the chances of selecting FT desirable plants in the programme
Tags from this library: No tags from this library for this title. Log in to add tags.
    average rating: 0.0 (0 votes)
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 Look under journal title (Browse shelf) Available
Total holds: 0

Peer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=0179-9541

Triticum tauschii provides breeders with a valuable source of resistance and tolerance genes. Elucidation of the inheritance of traits in this species that hinder its use in breeding programmes is therefore of interest to wheat breeders. Inheritance of threshability was investigated in the crosses of four non-free-threshing (NFT) synthetic hexaploids (Triticum turgidum x T. tauschii) and two free-threshing(FT) T. aestivum cultivars during four crop seasons over 3 years at El Batan and Ciudad Obregon, Mexico. The parents, their F-1 hybrids and individual F-2 plant-derived F-3 progenies of the crosses revealed that 'Altar 84'/T. tauschii (219), 'Chen'/T. tauschii (205), 'Chen'/T. tauschii (224), and 'Duergand'/T. tauschii (214) have independently segregating loci with two dominant alleles controlling threshability. Intercrosses among the synthetics, except 'Altar 84'/T. tauschii(219), showed the genes to be allelic to each other. The cross between the FT cultivars showed no segregation in the F-3 generation, indicating common recessive genes. Based on these findings, population sizes of the synthetic-derived breeding materials should be increased to improve the chances of selecting FT desirable plants in the programme

English

9705|John Wiley|R96ANALY|EE|Maria|Fdo|1

There are no comments for this item.

Log in to your account to post a comment.
baner

International Maize and Wheat Improvement Center (CIMMYT) © Copyright 2015. Carretera México-Veracruz. Km. 45, El Batán, Texcoco, México, C.P. 56237.
If you have any question, please contact us at CIMMYT-Knowledge-Center@cgiar.org

Centro Internacional de Mejoramiento de Maíz y Trigo (CIMMYT) © Copyright 2015. Carretera México-Veracruz. Km. 45, El Batán, Texcoco, México, C.P. 56237.
Si tiene cualquier pregunta, contáctenos a CIMMYT-Knowledge-Center@cgiar.org