Breaking the association between gametocidal gene(s) and leaf rust resistance gene (<i>LrS2427</i>) in <i>Triticum aestivum</i>-<i>Aegilops speltoides</i> derivative by gamma irradiation.

ABSTRACT: Utilization of crop wild relatives of wheat can be very effective in building the genetic diversity to cater to the evolving strains of disease pathogens. Aegilops speltoides is a rich source of rust resistance genes however transferring those to wheat genome can be tedious due to co-transfer and preferential transmission of undesirable genes causing gametocidal activity. Such an unholy association was observed in Triticum aestivum-Ae. speltoides derivative line Sel. 2427 which possess the broad-spectrum leaf rust seedling resistance gene (LrS2427). Molecular analysis based on 35 K wheat breeder's array revealed the maximum percentage of Ae. speltoides genome introgression on homoeologous group 2. In situ hybridization studies revealed the presence of S g

SUBMITTER: Ragini R 

PROVIDER: S-EPMC11322474 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature