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Published in Crop Sci 18:901-903 (1978)
© 1978 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Inheritance of an Induced Mutation for Bacterial Blight Resistance in Cotton1

L. A. Brinkerhoff, Laval M. Verhalen, Reza Mamaghani and William M. Johnson2

An induced mutation for an intermediate level of resistance to bacterial blight [Xanthomonas malvacearum (E. F. Sm.) Dows.] in cotton (Gossypium hirsutum L.) was obtained after irradiating seed of a blight-susceptible cultivar, ‘Westburn 70’, with fission neutrons. Inheritance studies indicated that the resistance was due to a single dominant gene. The mutant was not identical to B3, B4, B5, B7, or BN. Tests of homology with 12 other known bacterial blight resistance genes have not yet been conducted.

Key Words: Xanthamonas malvacearum (E. F. Sm.) Dows. • Gossypium hirsutum L. • Mutation breeding • Fission neutrons

1 Joint contribution of the Res. Program, Langston Univ., Langston, OK 75050 and the Deps. of Plant Pathology and Agronomy, Oklahoma State Univ., Stillwater, OK 74074. Supported in part by USDA, CSRS 89-106 Grants #416-15-26 and 516-15-90. Journal article 77-3 of Langston Univ. and 3358 of the Oklahoma Agric. Exp. Stn.

2 Research professor, professor, former graduate student, and assistant professor, respectively. Brinkerhoff, Mamaghani, and Johnson are (or were) affiliated with the Langston Univ. Research Program and the Dep. of Plant Pathology, Oklahoma State Univ., while Verhalen and Mamaghani are (or were) members of the Dep. of Agronomy, Oklahoma State Univ. Mamaghani is now an assistant professor, Dep. of Agronomy and Plant Breeding, Jundi-Shapour Univ., Ahvaz, Iran.

Received for publication October 28, 1977.




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