1.   Among the latter, some create many sterile seeds, while others produce more viable seeds.

2.   Among the latter, some create many sterile seeds while others produce more viable seeds.

3.   Design the plant for big yields of sterile seeds.

4.   Petunias come closest, because of their frost-hardiness and the fact that some have been bred to set no seed or only sterile seed.

5.   Sterile seed could also reduce fears that new traits engineered into crops, like the ability to tolerate herbicides, might jump to weeds.

6.   In a move praised by farmers, agribusiness giant Monsanto Co. pledged not to market genetically engineered crops that produce sterile seeds.

7.   Monsanto bought Pineland and Delta and lobbied to get exclusive rights to the sterile seed patent.

8.   The foundation says gene-altered crops can help reduce world hunger but opposes the idea of sterile seeds.