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Inheritance of Susceptibility to Helminthosporium victoriae in Crosses Involving Victoria and Other Crown Rust Resistant Oat Varieties 1
Author(s) -
Finkner Verne C.
Publication year - 1953
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1953.00021962004500090003x
Subject(s) - agricultural experiment station , state (computer science) , library science , political science , agriculture , agronomy , geography , biology , mathematics , archaeology , algorithm , computer science
PRIOR to the discovery of Helminthosporium victoriae Meehan and Murphy (4) many new improved oat varieties were derived from crosses with Victoria as one parent. These varieties contained the gene combination from Victoria for crown rust resistance but as was shown by Murphy and Meehan (5) and also by Litzenberger (3) this same gene combination for the Victoria type of crown rust resistance conditioned susceptibility to H. victoriae. This linkage between the Victoria type of crown rust resistance and susceptibility to H. victoriae has not been broken, which has led some to believe the reaction to these two diseases was a pleiotropic effect of a single gene. If this was the case it was conceivable that some other factor combination for crown rust resistance which was epistatic to the Victoria type of crown rust resistance might also be epistatic to the H. victoriae reaction. Such a combination would be very valuable in a variety since it would maintain the Victoria type of crown rust resistance to any races to which the other type might not be resistant and at the same time would be resistant to H. victoriae.