ISSN:
1573-5060
Keywords:
genetic linkage map
;
self-compatibility
;
S locus inhibitor
;
Sli gene
;
Solanum chacoense
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Abstract A self-compatible (SC) hybrid plant F1-1 was obtained from a cross between a SC variant of a wild diploid potato species, Solanum chacoense, and a self-incompatible (SI) cultivated diploid species, S. phureja. The clone F1-1 has previously been proposed to have a dominant S locus inhibitor gene (Sli) in a heterozygous condition. It was crossed as a male parent with a selected clone from a S. stenotomum-S. phureja population, resulting in a segregating population consisting of 116 hybrid plants. Self-compatibility was assessed by selfing each of the hybrids. Sixty-six of them were SC, while 35 were SI, showing a significant distortion from an expected Mendelian ratio of 1:1. A genetic linkage map was constructed using DNA markers to localize the Sli gene. A total of 28 RAPD and 127 RFLP markers identified 109 mapping positions on 12 linkage groups. The Sli gene was mapped at a distal end of chromosome 12. Since the S locus has been localized on chromosome 1 on the potato RFLP map, it is confirmed that the Sli gene is independent of the S locus.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1018380725160
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