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ARS Home » Midwest Area » Ames, Iowa » Corn Insects and Crop Genetics Research » Research » Publications at this Location » Publication #68045
Title: CYTOLOGY AND GENETICS OF A TISSUE-CULTURE DERIVED SOYBEAN GENIC MALE STERILE

Author
item ILARSLAN, H - ISU
item SKORUPSKA, H - CLEMSON UNIVERSITY
item HORNER, H - ISU
item PALMER, REID

Submitted to: Journal of Heredity
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 7/26/1996
Publication Date: N/A
Citation: N/A

Interpretive Summary: A male-sterile, female-sterile mutant was derived from tissue culture of the soybean cultivar Calland. Our objective was to determine the inheritance and to determine microscopically the tissues responsible for sterility. The sterility is inherited in as a simple trait involving one gene in all cross pollination combinations except one. In the unusual combination, the sterility trait is inherited as a two factor trait (two genes). This duplicate trait inheritance is important in the study of the evolution of the soybean, even though the trait is non agronomic. Microscopically the sex cells (male and female) behave abnormally to produce defective progeny. This defect causes the sterility in both male and female structures in the soybean plants. These results will be of greatest interest to scientists studying soybean genetics.

Technical Abstract: A male-sterile, female-sterile mutant was derived from tissue culture of the soybean cultivars Calland. This mutant was non-allelic to st2, st3, st4, and st5 female-sterile and male-sterile mutants. The Calland sterile was inherited as a single gene recessive in all cross combinations except one, where it was inherited as a duplicate factor. In studies of microsporogenesis, lagging chromosomes and unequal chromosome segregation occurred during anaphase I and anaphase II. This mutant was classified as a desynaptic sterile. The Calland sterile was the first tissue culture derived sterility soybean mutant to be studied genetically and cytologically.