Research notes: Inheritance of abnormal nodulation between Rhizobium japonicum strain 62 and the soybean variety Amsoy 71

Date
1979-04-01
Authors
Lawson, R.
Lambert, J.
Ham, G.
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Iowa State University Digital Repository
Abstract

To date, four genes are known that result in abnormal nodulation in soybeans. The gene rj1 (Williams and Lynch, 1954; Caldwell, 1966) prevents nodulation with almost all Rhizobium japonicum strains. The genes Rj2 (Caldwell, 1966 ) in combination with strains b7 and bl4 of the 3-24-44 serogroup and bl22 of the 122 serogroup, Rj3 (Vest, 1970) in combination with strain 33, and Rj4 (Vest and Caldwell, 1972) in combination with strain 61 all result in chlorotic plants with abnormal nodulation.

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