Work

Pseudo-linkage or real-linkage of rust resistance genes in a wheat-Thinopyrum intermedium translocation line

Year: 2024

Type: article

Abstract: Wheat addition lines Z4 and Z5 carrying rust resistance genes from Thinopyrum intermedium (JJJsJsStSt, 2n = 6x = 42) together with three wheat lines involved in the production of these addition lines were analysed by rust response, 90K SNP genotyping, and molecular cytogenetic analysis. Backcross and selfed populations involving the addition lines and various wheat cultivars were studied to understand the inheritance of the alien resistance genes. Although inheritance studies indicated genetic linkage, the alien genes for resistance to leaf rust (LR) and stripe rust (YR) in Z4 were present in different wheat-Th. intermedium translocation chromosomes. We found that LR and YR are in pseudo-linkage, rather than true linkage.

Source: Theoretical and Applied Genetics

DOI: 10.1007/s00122-024-04807-6

Authors: Jianbo Li, Merrill Ryan, Chongmei Dong, Kerrie L. Forrest, Matthew J. Hayden, Smriti Singh, Yuqi Wang, Nizam Ahmed, Robert A. McIntosh, Peng Zhang

Institutions: The University of Sydney, Department of Primary Industries, AgriBio, Department of Energy, Environment and Climate Action, Sichuan Agricultural University

Language: English

Topic: Wheat and Barley Genetics and Pathology

Subfield: Plant Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

SDG: Zero hunger

Open Access status: green

OpenAlex ID: W4405835260

FWCI: 0.728

Cites: 42

Cited by: 3

Related to: 10