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| February 1997, Volume 78, Number 2, Pages 190-204 |
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| Original Article |
| The genetic mechanism of sex determination in the androdioecious flowering plant, Datisca glomerata (Datiscaceae) |
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| DIANA E WOLF1, LOREN H RIESEBERG1 and STANLEY C SPENCER2 |
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1Department of Biology, Indiana University, Bloomington, IN 47405
2Rancho Santa Ana Botanic Garden, 1500 N. College Avenue, Claremont, CA 91711, U.S.A.
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Correspondence to: DIANA E WOLF, E-mail: dewolf@bio.indiana.edu |
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| Abstract |
| A series of experimental crosses was conducted to determine the genetic basis of sex determination in the androdioecious plant species, Datisca glomerata (Datiscaceae). Sex determination in D. glomerata appears to be controlled by at least two loci. Males are homozygous recessive at both loci, whereas hermaphrodites have at least one dominant allele at either locus. However, the problem of sex determination has not been entirely resolved, as there appear to be two different linkage distances between the two sex determining loci (36±4.5 cM and 6.7±1.5 cM). This was unexpected, and further studies will be conducted to determine the nature of this anomaly. This is the first report of the genetics of sex determination in an androdioecious plant. |
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| Keywords |
| androdioecy; breeding system; Datisca glomerata; Datiscaceae; sex determination |
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| Received 20 March 1996 |
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| February 1997, Volume 78, Number 2, Pages 190-204 |
| Table of contents Previous Abstract Next Article PDF |
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