How do you collect seeds from roses?

im learing how to breed roses and i dont know how to collect the seeds so can grow that species next year?

How do you collect seeds from roses?
Haws or rose hips are the fruits of roses and the seeds inside. Here some photos:


http://www.imageenvision.com/photo/0003-...


number 24 and 25 of this site:


http://almaden.ca.campusgrid.net/home/Bi...


You find the haws of wild roses like Rosa canina


( photos:http://images.google.de/images?q=Rosa+ca... ) in nature or those of cultivated roses sometimes in official gardens.


And here a site about breeding from seeds:


http://www.extension.umn.edu/yardandgard...
Reply:I am from California so I cut my roses down in Jan and take the shoots that are cut from the main plant and put them in a bucket of water and keep in my garage. About 70% of them root and then I pot after they show a good a root. In two years you will have a nice plant. I have been aware that you could use the seed but it is a lot of work. Call a good nursey and they will give you the secrets, but they as well cut shoots.
Reply:just take a rose and keep it in a plastic bag. next year just sprinkle whatever material is present in the plastic bag after crushing it.