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The Journal of Heredity 1978:69(1):22-26
© 1978 The American Genetic Association 69:22-26

research-article

Cytoplasmic male sterility in petunia

III. Genetic control of microsporogenesis and male fertility restoration

S. IZHAR

Contribution from the Division of Plant Genetics and Breeding, Institute of Field and Garden Crops, Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel. 1977 Series No. 217-E.

Abstract

Cytoplasmic male sterility in petunia was shown to be under plasmon–genome control. The male-sterile pheno type was variable in that breakdown at different stages of microsporogenesis and gametogenesis is under the control of a multiple genes system. Comparison of the known restorers in several petunia species revealed that male fertility restoration can be achieved by I) a single dominant gene that is not temperature sensitive, and 2) a multiple genes system that is temperature sensitive; dif ferent amounts of the proper alleles affect breakdown from early meiosis to full fertility. Different aspects of this work and a possible mode of action of the restorer genes are discussed.


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S. Bentolila, A. A. Alfonso, and M. R. Hanson
A pentatricopeptide repeat-containing gene restores fertility to cytoplasmic male-sterile plants
PNAS, August 6, 2002; 99(16): 10887 - 10892.
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