ALTERNATIVE METHODS OF PLOIDY DETERMINATION IN CAMOMILE
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.
Letchamo, W. (1991). ALTERNATIVE METHODS OF PLOIDY DETERMINATION IN CAMOMILE. Acta Hortic. 289, 237-238
ploidy level, diploid, tetraploid, germpore, chloroplasts, stomata, guard cells, Chamomilla recutita