Warmke, H.E. and Overman, M.A. (1972) Cytoplasmic male sterility in sorghum. I. Callose behavior in fertile and sterile anthers. Journal of Heredity, 63 (3). pp. 103-108.
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Abstract
Anthers of nearly isogenic maintainer and cytoplasmic male-sterile lines of Sorghum bicolor were compared cytologically. Development was similar in fertile and sterile plants during early meiotic prophase and callose "special wall" formation. At this stage callose formation diverged sharply in fertile and sterile anthers. In fertile anthers, the central callose mass splits into sectors along the planes of the original microsporocyte walls and forms a covering that effectively isolates the microsporocytes and young microspores. This special wall later dissolves to free the microspores. In sterile anthers, the callose appears to separate from the microsporocytes and forms an amorphous mass at the centre of the locule. This mass becomes fibrous and more diffuse during meiosis and disappears early. Without the special callose walls, the sporocytes are not isolated physically or physiologically. They tend to stick together and may fuse to form polyploid or multinucleate microspores, and individual microspores are not isolated, either from the influence of maternal tissues or from other microspores of different genetic constitution.
| Item Type: | Article |
|---|---|
| Author Affiliation: | University of Florida, Gainesville, USA |
| Subjects: | Plant Protection Crop Improvement |
| Divisions: | Sorghum |
| Depositing User: | Mr. SanatKumar Behera |
| Date Deposited: | 31 May 2012 04:56 |
| Last Modified: | 31 May 2012 04:57 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/5975 |
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