1. The selection criteria used in the development of this variety include Roundup tolerance, forage
yield, winter-active growth, persistence and resistance to one or more of the following pests: bacterial
wilt, Fusarium wilt, Verticillium wilt, anthracnose (Race 1), Phytophthora root rot, and Aphanomyces
root rot (Race 1 and/or Race 2). Parent plants contain tolerance to Roundup® (glyphosate) herbicide
conferred by the CP4 5-enolpyruvylshikimate-3-phosphate synthase (cp4-epsps) transgene, specifically,
the USDA deregulated Roundup Ready® alfalfa transgenic events J101 and/or J163 (OECD unique
identifiers: MON-00101-8 and MON-00163-7, respectively).
2. This variety is adapted to California and the Moderately Winterhardy areas of the West. This
variety has been tested in California and Idaho. It will be used in the Southwest and Moderately
Winterhardy Intermountain regions.
3. Test variety has fall dormancy similar to FD6 checks. Flower color (Syn2) is 94% purple, 6%
variegated with trace of white, cream and yellow. This variety has moderate multifoliolate leaf
expression. Test variety is “Roundup Ready®” expressing tolerance to Roundup® herbicide conferred by
the cp4-epsps transgene.
4. This variety has high resistance to anthracnose (Race 1), bacterial wilt, Fusarium wilt,
Phytophthora root rot, spotted alfalfa aphid, blue alfalfa aphid and root knot nematode (M. hapla);
resistance to Verticillium wilt, pea aphid and stem nematode. Reaction to Aphanomyces root rot has not
5. Seed increase is on a limited generation basis with one generation of breeder and two generations
of foundation and certified seed classes. Breeder (Syn 1), foundation (Syn 2), and certified (Syn 2 or Syn
3) classes will be recognized. Breeder seed was produced in the field near Nampa, ID in 2003. Forage
Genetics will maintain sufficient foundation seed for the projected life of the variety. Stands of foundation
and certified seed fields are limited to 3 and 6 years, respectively. At least one glyphosate application is
required during early stand establishment so that cp4-epsps null segregant plants are removed from the
seed field prior to pollination. (Null segregant plants are the plants that do not contain the Roundup
Ready® trait due to normal genetic segregation in this variety).
6. Certified seed will be marketed in 2006.
7. No decision has been made concerning Plant Variety Protection Act.
8. The information in this application may not be forwarded to the PVP office.
9. Variety Name: RRALF 6R100 Submitted: November 21, 2005
Experimental designations: R63T908; RR03BD-161