Normal view MARC view ISBD view

Inheritance of leaf rust resistance in durum wheat

By: Zhang, H.
Contributor(s): Knott, D.R [coaut.].
Material type: materialTypeLabelArticlePublisher: 1990ISSN: 0011-183X.Subject(s): Basidiomycotina | Cell structure | Chromosomes | Fungi | Genes | Gramineae | Nucleus | Plant diseases | Plant genetics and breeding | Puccinia | Resistance to injurious factors | Taxa | Taxonomy | Uredinales | TriticumDDC classification: 91-043505 In: Crop science (USA). (Nov-Dec 1990). v. 30(6) p. 1218-1222Summary: The inheritance of resistance to leaf rust (Puccinia recondita f. sp. tritici) in durum wheat (Triticum turgidum L.) is poorly understood. Eight leaf rust-resistant durum cultivars of diverse origin were crossed and backcrossed to a susceptible line, RL6089, to determine the inheritance of resistance and to provide useful information for durum wheat breeders. Seedlings of the F1, F2, and BCF2 generations were tested with Race 15 in the greenhouse. Lines carrying single genes for resistance were developed from the backcrosses and tested with six races of leaf rust: 1, 15, 58, 100, 104, and 161. Diallel crosses among the resistant parents were made and seedlings tested with Race 15 to determine if any of the parents carry genes for resistance in common. The data showed that 'Stewart 63' and 'Medora' each carry one dominant and one recessive gene, 'Quilafen' carries one dominant gene, and 'Wakooma', 'Lloyd', 'Pelissier', and 'Golden Ball' each carry a single recessive gene. 'Vic' carries a dominant gene and possibly a recessive gene. All of the diallel crosses segregated susceptible plants, indicating that the parents carry different genes for resistance. A comparison of the reaction to the six races of the derived single-gene lines and near-isogenic lines of 'Thatcher' carrying specific Lr genes revealed that the dominant gene carried by Stewart 63 may be Lr16 and the dominant gene in Quilafen may be Lr17. The seven other genes have probably not been previously identified. Most of the genes should be of value in durum wheat breedingCollection: AGRIS Collection
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

 

AGRIS Collection 91-043505 (Browse shelf) Available
Total holds: 0

references US (DNAL 64.8 C883)

The inheritance of resistance to leaf rust (Puccinia recondita f. sp. tritici) in durum wheat (Triticum turgidum L.) is poorly understood. Eight leaf rust-resistant durum cultivars of diverse origin were crossed and backcrossed to a susceptible line, RL6089, to determine the inheritance of resistance and to provide useful information for durum wheat breeders. Seedlings of the F1, F2, and BCF2 generations were tested with Race 15 in the greenhouse. Lines carrying single genes for resistance were developed from the backcrosses and tested with six races of leaf rust: 1, 15, 58, 100, 104, and 161. Diallel crosses among the resistant parents were made and seedlings tested with Race 15 to determine if any of the parents carry genes for resistance in common. The data showed that 'Stewart 63' and 'Medora' each carry one dominant and one recessive gene, 'Quilafen' carries one dominant gene, and 'Wakooma', 'Lloyd', 'Pelissier', and 'Golden Ball' each carry a single recessive gene. 'Vic' carries a dominant gene and possibly a recessive gene. All of the diallel crosses segregated susceptible plants, indicating that the parents carry different genes for resistance. A comparison of the reaction to the six races of the derived single-gene lines and near-isogenic lines of 'Thatcher' carrying specific Lr genes revealed that the dominant gene carried by Stewart 63 may be Lr16 and the dominant gene in Quilafen may be Lr17. The seven other genes have probably not been previously identified. Most of the genes should be of value in durum wheat breeding

English

AGRIS Collection

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.
Monday –Friday 9:00 am. 17:00 pm. 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.
Lunes –Viernes 9:00 am. 17:00 pm. Si tiene cualquier pregunta, contáctenos a CIMMYT-Knowledge-Center@cgiar.org