Abstract
Autotetraploidy was induced in Phlox drummondii Hook. with aim to enhance the ornamental value as well as seed out put. Meiotic studies revealed highly irregular meiosis in C1 lesson in C2 generation. Meiotic abnormalities in the C2 generation increased pollen sterility which lowered seed setting. High bivalent and low multivalent frequencies in the PMCs in C2 generation led to a improvement on pollen and plant fertility.
