Gene Pu(6): A new gene in sunflower for resistance to Puccinia helianthi

Studies were conducted to determine the genetic basis of resistance of sunflower (Helianthus annuus) 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 s...

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Bibliographic Details
Published inPhytopathology Vol. 79; no. 4
Main Authors Yang, S.M, Dowler, W.M, Luciano, A
Format Journal Article
LanguageEnglish
Published 01.04.1989
Subjects
AMERICA DEL NORTE
AMERIQUE DU NORD
GENE DOMINANT
GENES DOMINANTES
HELIANTHUS ANNUUS
LIGNEE CONSANGUINE
LINEAS CONSANGUINEAS
PRODUCTOS DEL CRUZAMIENTO
PRODUIT DE CROISEMENT
RACE
RAZAS
RESISTANCE AUX MALADIES
RESISTENCIA A LA ENFERMEDAD
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Summary:Studies were conducted to determine the genetic basis of resistance of sunflower (Helianthus annuus) 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 Pu(n), instead of Rn, to designate the sunflower genes for resistance to P. helianthi, and the name Pu(6) for the resistance gene in P386. This gene in P386 was different from the resistance gene R1 (Pu(1)) in CM 90RR, conferring resistance to NA races 1 and 2, and gene R2 (Pu(2)) in CM 29-3, conferring resistance to NA races 1 and 3. The resistance gene in P386 was also different from gene R4 (Pu(4)) in the sunflower inbred line HAR3 and gene R5 (Pu(5)) in HAR2
Bibliography:F30
H20
8922940
ISSN:0031-949X
1943-7684