SW 10 

1.  Parent plants were selected for abundant mid winter growth at Poston, Arizona and Mendota, California, large crowns, healthy roots and resistance to spotted alfalfa aphid, pea aphid and blue alfalfa aphid.

2.  SW 10 is adapted to the Southwest area of adaptation in the southern San Joaquin Valley and Imperial Valley of California and to the hot climate areas of Arizona where very non-dormant alfalfa varieties are grown. These are the areas of intended use and locations of yield tests.

3.  Fall dormancy of SW 10 is similar to the FD10 check. Flower color is 100% purple in the Syn. 3 generation.

4.  SW 10 is highly resistant to spotted alfalfa aphid, pea aphid, blue alfalfa aphid; resistant to Fusarium wilt, southern root knot nematode (M. Incognita) and Phytophthora root rot; moderately resistant to bacterial wilt. Reaction to anthracnose (Race 1), Verticillium wilt, stem nematode and Aphanomyces root rot (Race 1) has not been tested.

5.  Breeder seed was produced in 1999. S&W Seed Company will maintain seed stocks of this variety. Under certification, the classes of seed will be breeder, foundation, and certified. Foundation seed will be produced from breeder seed and/or foundation seed. Foundation seed will be used to produce certified seed. Length of stand life allowed for foundation and certified seed is four and six years respectively.

6.  Certified seed will be available for sale in the Fall of 2004.

7.  No decision has been made concerning Plant Variety Protection Act.

8.  This information may be sent to the PVP office.

9.  Variety name:  SW 10            Date submitted: November 21, 2003.