GenePu6: A New Gene in Sunflower for Resistance toPuccinia helianthi
- 1 January 1989
- journal article
- research article
- Published by Scientific Societies in Phytopathology®
- Vol. 79 (4) , 474-477
- https://doi.org/10.1094/phyto-79-474
Abstract
Studies were conducted to determine the genetic basis of resistant of sunflower (Helianthus annus) inbred line P386 to Puccinia helianthi. This study showed that P386 carries a single dominant gene conditioning resistance to the four North American (NA) races of P. helianthi. We propose the gene symbol Pun, instead of Rn, to designate the sunflower genes for resistance to P. helianthi, and the name Pu6 for the resistance gene in P386. This gene in P386 was different from the resistance gene R1 (Pu1) in CM 90RR, conferring resistance to NA races 1 and 2, and gene R2 (Pu2) in CM29-3, conferring resistance to NA races 1 and 3. The resistance gene in P386 was also different from gene R4 (Pu4) in the sunflower inbred line HAR3 and gene R5 (Pu5) in HAR2.This publication has 2 references indexed in Scilit: