Abstract: In this study the two pollination control systems, i.e. Cytoplasmic Male Sterility (CMS) and the use of Chemical Hybridizing Agents (CHA), were compared to discover their efficiency for the sterility reaction and their impacts in hybrid seed production. The result has shown that both systems were equally effective in their sterility performance. However, CHA resulted in reduced out crossing percentage due to female sterility, germination percentage and hundred seed weight of the hybrid seed due to toxicity. Overall the CMS system was better than the CHA system (based on the particular CHA used in this study) for attributes related to hybrid seed production.