Seeds are the containers of genetic information (DNA) for plants that (used to) guarantee the perpetuation of that species.
The seed industry will do whatever it takes to stop farmers saving seeds. The only way it can make big money from seeds is to force farmers to buy from seed companies every year. With rice, one of the world’s most important crops, it is no wonder that there is a relentless push for a hybrid variety that is essentially sterile.  Suicide seeds, so to speak. Of course, the seed industry wants people to believe that there are other reasons behind the push for hybrid rice. They talk of higher yields and big profits for farmers. But if you look at the situation in the fields, none of that turns out to be true. -- http://grain.org/seedling/?id=510