Hybrid wheat seed production potential using the chemical hybridizing agent SC2053

The success of hybrid wheat depends greatly on the female seed production. The objectives of this experiment were to evaluate the effects of two doses of a Chemical Hybridizing Agent (CHA) on the stigma receptivity. In a growth chamber, plants were hand emasculated or treated with a normal (D1) or an excessive dose (D2) of the CHA. Spikes were hand pollinated at different dates during the flowering period. The CHA did not affect significantly the female receptivity neither in duration nor in intensity. We pointed out that for the hybrid seed production there was an optimal period of 5 days. If pollination took place during this period, the seed set and the 1000 grain weight were the highest.