Vol. 7 No. 3-4 (2001)
Articles

Inheritance of male sterility in apricot

Published September 11, 2001
L. Burgos
Departamento de Mejora y Patologia Vegetal, CEBAS-CSIC, Apartado de Correos 4195, 30080-Murcia, Spain
J. Egea
Departamento de Mejora y Patologia Vegetal, CEBAS-CSIC, Apartado de Correos 4195, 30080-Murcia, Spain
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APA

Burgos, L., & Egea, J. (2001). Inheritance of male sterility in apricot. International Journal of Horticultural Science, 7(3-4), 12–14. https://doi.org/10.31421/IJHS/7/3-4/274

Progenies (total of 1,114 seedlings) from crosses representing all possible genotypic combinations between 4 male-fertile and 1 male-sterile apricot parents were scored for the male sterility trait. Crosses between putative heterozygous normal cultivars yielded 25% of male-sterile seedlings, which supports a previous hypothesis that male sterility is controlled by a recessive allele of one nuclear locus. Crosses between those parents and putative homozygous normal cultivars did not produce any male-sterile tree. Finally, the proportion of male-sterile progeny in crosses between a male-sterile and two male-fertile cultivars depended on the genotype of the male parent. When it was heterozygous approximately 50% of the progeny was sterile, whereas when a homozygous fertile parent was used, no male-sterile progeny was obtained. These results confirm a previously proposed model, in which the male sterility trait in apricot is controlled by a single recessive gene.

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