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| Content Provider | PubMed Central |
|---|---|
| Author | Irish, E. E. |
| Abstract | The maize (Zea mays L.) mutation Tassel seed 6 (Ts6) disrupts both sex determination in the tassel and the pattern of branching in inflorescences. This results in the formation of supernumerary florets in tassels and ears and in the development of pistils in tassel florets where they are normally aborted. A developmental analysis indicated that extra florets in Ts6 inflorescences are most likely the result of delayed determinacy in spikelet meristems, which then initiate additional floret meristems rather than initiating floral organs as in wild type. I have used culturing experiments to assay whether delayed determinacy of Ts6 mutant tassels is reflected in an altered timing of specific determination events. Length of the tassel was used as a developmental marker. These experiments showed that although Ts6 tassels elongate much more slowly than wild type, both mutant and wild-type tassels gained the ability to form flowers with organs of normal morphology in culture at the same time. In situ hybridization patterns of expression of the maize gene Kn, which is normally expressed in shoot meristems and not in determinate lateral organs, confirmed that additional meristems, rather than lateral organs, are initiated by spikelet meristems in Ts6 tassels. |
| Starting Page | 817 |
| File Format | |
| ISSN | 15322548 |
| e-ISSN | 15322548 |
| Journal | Plant Physiology |
| Issue Number | 3 |
| Volume Number | 114 |
| Language | English |
| Publisher Date | 1997-07-01 |
| Access Restriction | Open |
| Subject Keyword | Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Genetics Physiology Plant Science |
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