Avena sativa, Avena sterilis, Puaccinia coronata, disease resistance
Thirty-four single sorus cultures of P. coronata were used separately to inoculate seedlings of 70 strains of oats known to carry genes for resistance. Infection types ranged from immune to fully susceptible. When infection types were arbitrarily divided into "resistant" or "susceptible" categories, the 70 lines comprised 45 patterns of host reaction, which ranged from resistance to all cultures to susceptibility to all cultures. Three strains were resistant to all 34 cultures, and nine were susceptible to only a single culture. The most virulent culture parasitized 45 of the oat strains, the least virulent, only six.
Proceedings of the Iowa Academy of Science
© Copyright 1983 by the Iowa Academy of Science, Inc.
Michel, L. J. and Simons, M. D.
"Evaluation of Sources of Resistance in Oats to Puccinia coronata by use of Many Fungus Cultures,"
Proceedings of the Iowa Academy of Science: Vol. 90:
, Article 8.
Available at: http://scholarworks.uni.edu/pias/vol90/iss4/8