ISHS Acta Horticulturae 289: International Symposium on Plant Biotechnology and its Contribution to Plant Development, Multiplication and Improvement
ALTERNATIVE METHODS OF PLOIDY DETERMINATION IN CAMOMILE |
| Author: | W. Letchamo |
| Keywords: | ploidy level, diploid, tetraploid, germpore, chloroplasts, stomata, guard cells, Chamomilla recutita |
| Abstract:
A comparative cytomorphological investigation of diploid and tetraploid camomile genotypes has been carried out. All the pollen grains examined from diploid plants had only three (100%) germpores, while tetraploid plants had four and only few (23 %) were recorded with a mixture of three and four germpores. The lowest mean chloroplasts number for tetraploid plants was 23/pair of guard cells, while the highest diploid mean was 22. The highest stomata mean number for the tetraploids was 11.7 and the lowest for the diploids was 31.2/mm2. Hence, the measurements of the above traits provided a distinct, accurate and rapid identification of the ploidy levels of the two camomile groups in various stages of the plants development, either in the fields or laboratories. | |
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