@Article{taiwania1997424289,
AUTHOR = {M. Chaturvedi, K.  Datta and S. K. Datta},
TITLE = {Pollen Variation in Gamma Irradiated Mesembryanthemum criniflorum L. f.(Aizoaceae)},
JOURNAL = {Taiwania},
VOLUME = {42},
YEAR = {1997},
ISSUE = {4},
PAGES = {289-295},
URL = {https://taiwania.ntu.edu.tw/abstract/169},
ABSTRACT = {Pollen morphology of Mesembryanthemum criniflorum L.f. in the plants treated or not treated with gamma irradiation of 5, 10, 20, 30, 40 and 50 Krad dosages have been studied using LM and SEM. Pollen grains in the control plants are basically 3(-4)-colpate-colporoidate. Besides, parasyncolpate grains occur as a variation. The pollen size is variable having a wide range(P x E: 17-37 x 14-35μm). The pollen sculpture is spinulose-punctate.In the irradiated plants, the pollen size range drastically narrowed down.While the pollen grains of the plants treated with 5, 20, 30, 40 and 50 Krad  dosages had the same pollen morphology as in the controls, the plants treated with 10 Krad dosage showed a  complete change in the exine ornamentation exhibiting 'Microoverrucate' pattern as against the spinulose pattern, characteristic of the species. Since  the apertural character did not deviate from the basic 3-colpate-colporoidate condition, it has been contended that the exine surface pattern and the apertural features may be considered as separate characters controlled by different genes, and that the change in the exine pattern may be attributed to the mutation  of the gene/genes controlling he pattern.},
DOI = {10.6165/tai.1997.42.289}
}