Stem rust in the presence of barberry

Sammanfattning

Puccinia graminis is the causal agent of stem rust on cereals, a disease that have been known and feared for centuries. In Sweden, a law of removal of the alternate host barberry was implemented until 1994. Since then, the occurrence of barberry has increased, as well as the stem rust disease. Our studies shows that barberry is an important part of the disease cycle in Sweden and the genetic variation of the pathogen is high, both within and between infested fields. Until now, only oats and rye as well as some wild grasses are infected by P. graminis in Sweden. In addition, we found a clear genetical and morphological differentiation between stem rust infecting rye and oats respectively. Why wheat is not affected remains as a question to be answered, since most of the Swedish wheat cultivars are susceptible to P. graminis f. sp. tritici, the stem rust infecting wheat.

Publicerad i

Utgivare: Borlaug Global Rust Initiative

SLU författare

• Berlin, Anna

  • Institutionen för skoglig mykologi och växtpatologi, Sveriges lantbruksuniversitet
    

UKÄ forskningsämne

Jordbruksvetenskap

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/53533