They are the only form in which Puccinia graminis is able to overwinter independently of a host.

Its most devastating form (Puccinia graminis) attacks the plant’s stem, forming lethal, scaly red pustules.

The development of avirulent and virulent strains of stem rust (Puccinia graminis Pers. f.sp. tritici Eriks.

Stem rust (Puccinia graminis tritici) is a FUNGUS disease disseminated by spores, which can be carried by wind for thousands of kilometres.

Her work on the cytology of the rust fungus Puccinia graminis helped to elucidate the life cycle and pathology of this devastating fungal disease agent of cereal crops.

A type of dwarfism found in crosses involving the wheat (Triticum aestivum L.) cultivar Webster and a stem rust (Puccinia graminis tritici Erik.

Both procedures resulted in the transfer of a gene or genes for stem rust (Puccinia graminis tritici Eriks. and Henn.) resistance from chromosome 7el2 to wheat chromosomes.

Genetical studies were also made of resistance in rye to both Puccinia graminis secalis and P. graminis tritici, and in barley to P. anomala.

Four stem rust (Puccinia graminis tritici Eriks. &Henn.) resistant wheat (Triticum aestivum L.) – Agropyron recombinants were analyzed to determine the wheat chromosomes involved.

OGGEMA, Matthias W. " The Genetics of Resistance to Puccinia Graminis Tritici in Eight Wheat Varieties from Kenya " Ph.

Inheritance of resistance to race 15B-1 of stem rust (Puccinia graminis Pers. f. sp. tritici Eriks, and Henn.) was studied in six lines of wheat (Triticum aestivum L.) having adult plant resistance.

The pattern of inheritance of isozyme alleles was examined in the F2 progeny of a sexual cross between two different physiologic races of the wheat stem rust pathogen, Puccinia graminis Pers. f. sp. tritici Eriks.

In vitro Puccinia graminis f.sp. tritici, race 32, produced dikaryotic hyphae from infection structures, corresponding to appressoria and substomatal vesicles (differentiated), which are formed by germ tubes as a response to a heat shock within 24 h after seeding the spores.

Plants derived from a cross between the oat cultivar Kyto (Avena sativa L.) and A. sterilis L. were highly resistant to oat stem rust (Puccinia graminis Pers.) in the adult plant stage. This resistance was much superior to that of either parent.

During this time, she conducted her doctoral studies at the University of Minnesota, where under the supervision of Elvin C. Stakman she completed her Doctor of Philosophy (Ph.D.) in agricultural science in 1922 with the dissertation Studies in wheat stem rust (Puccinia graminis tritici).