Sentence:  Legume flowers are <WSD>emasculated</WSD> by removing the corolla, staminal tube, and anthers with small forceps, leaving the pistil intact. Anthers and pollen are sometimes removed from flowers with suction, washed off with a jet of water, or killed by immersing the flower in an alcohol solution or hot water. In crops that have a high degree of self-sterility, such as red clover, it may be unnecessary to <WSD>emasculate</WSD>, especially if the pollen parent has a dominant marker gene so that plants originating by self-pollination may be identified. 
Meaning of the word marked with <WSD> tags:  Of a flower: to deprive of the anthers.