Record Details

Title:
Inheritance of resistance to Phytophthora megasperma f. sp. glycinea in a soybean plant introduction
Publication date:
1984
Summary:
Inheritance of resistance to Phytophthora megasperma f. sp. glycinea was studied in a soybean (Glycine max) PI 157409 that was resistant to races 1 through 16 of the fungus. PI 157409 was crossed with Harosoy, Mukden, Sanga, PI 54615-1, Williams 82, PI 86972-1 and PRX27-108. The F2 populations and the F3 families of each cross were inoculated with races 1, 2, 3, 4, 5, 7 and 9 of the fungus. PI 157409 had two genes for resistance: Rps1b, which gives resistance to races 1, 3, 4, 5, 7 and 9 and susceptibility to race 2; and Rps4, which gives resistance to 1, 2, 3 and 4 and susceptibility to races 5, 7 and 9. This is the first soybean strain in which the gene combination Rps1bRps4 has been reported. The combination is useful because the genes Rps1bRps4 confer resistance to all reported races, 1 through 22, of P. megasperma f. sp. glycinea. [AS/SS]
Call number:
A:PS
Journal citation:
Contact information:
harvest@worldveg.org

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 Record created 1985-05-31, last modified 2019-03-04


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