Mostrar el registro sencillo del ítem

Molecular mapping of leaf rust resistance gene LrZH84 in Chinese wheat line Zhou 8425B

Autor: Zhao, X.L.
Autor: Zheng, T.C.
Autor: Xia, X.C.
Autor: He Zhonghu
Autor: Liu, D.Q.
Autor: Yang, W.X.
Autor: Yin, G.H.
Autor: Li, Z.F.
Año: 2008
URI: http://hdl.handle.net/10883/2669
URI: http://hdl.handle.net/10883/2669
Resumen: Leaf rust, caused by Puccinia triticina, is one of the most widespread diseases in common wheat (Triticum aestivum L.) worldwide. With the objective of identifying and mapping new genes for resistance to leaf rust, F1, F2 plants and F3 lines from a cross between resistant line Zhou 8425B and susceptible line Chinese Spring were inoculated with Chinese P. triticina races THTT and MBHP in the greenhouse. A total of 793 pairs of SSR primers were used to test the parents and resistant and susceptible bulks. Seven polymorphic chromosome 1B markers were used for genotyping the F2 and F3 populations. Zhou 8425B carried a single dominant resistance gene, temporarily designated LrZH84, linked to SSR markers gwm582 and barc8 with genetic distances of 3.9 and 5.2 cM, respectively. The Xbarc8 allele co-segregated with Lr26 in the F3 population. The Xgwm582 allele associated with LrZH84 was identified as a leaf rust resistance gene and shown to be present in the Predgornaia 2 parent of Zhou 8425B. The seedling reaction pattern of LrZH84 was different from those of lines with Lr26, Lr33, Lr44 and Lr46, all of which are located in chromosome 1B. It was concluded that LrZH84 is likely to be a new leaf rust resistance gene.
Lenguaje: English
Copyright: CIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact CIMMYT-Knowledge-Center@cgiar.org indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the suitable license for that purpose.
Tipo: Article
Pais: China
Región: East Asia
Paginas: 1069-1075
No de Revista: 7
Revista: Theoretical and Applied Genetics
Volumen de la Revista: 117


Ficheros en el ítem

Thumbnail

Este ítem aparece en la(s) siguiente(s) colección(ones)

  • Wheat
    Wheat - breeding, phytopathology, physiology, quality, biotech

Mostrar el registro sencillo del ítem