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Published in Crop Sci 7:668-669 (1967)
© 1967 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Inheritance of Cytoplasmic Malesterility in Sudangrass1

Sultanul Alam and P. C. Sandal2

Inheritance of cytoplasmic male-sterility was studied in F2 and BC1 generations within crosses of male-sterile Sorghum arundinaceum var. Rhodesian with six lines of sudangrass, Sorghum vulgare var. sudanense. All F1 progenies were male-fertile indicating that the males carried dominant fertility restorer genes.

Based on the segregation of male-fertile to male-sterile plants in the F2 and BC1 generations, male-sterility was conditioned by one gene pair in three crosses, two gene pairs in two crosses and by three gene pairs in one cross. Fertility was dependent on at least a single dominant fertility restorer gene at each of any two of the three gene loci identified.

Key Words: genetics of sterility • sterility in sudangrass

1 Published with permission of the Director of the North Dakota Agr. Exp. Sta. as Journal Article No. 115. Part of a thesis submitted by the senior author in partial fulfillment of the requirements for the M.S. degree.

2 Graduate Assistant and Professor, North Dakota State University. Fargo.

Received for publication March 27, 1967.




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