|
CW 09084 |
|
1.
CW 09084 is a synthetic variety with 150 parent plants which were
selected for spotted alfalfa aphid resistance from source populations
selected for drought tolerance, crown rot resistance and persistence in
Mexico. Source populations were developed by a combination of phenotypic
recurrent selection and strain crossing with selection for resistance to
one or more of the following pests: Fusarium wilt, Phytophthora root
rot, anthracnose (race 1), spotted alfalfa aphid, and blue alfalfa
aphid. Parentage of CW 09084 traces to miscellaneous Cal/West Seeds
breeding population (100%). Approximate germplasm source contributions
are as follows: African (100%). 2. CW 09084 is
adapted to the Southwest area of the U.S. and Mexico and is intended for
use in Mexico. CW 09084 has been tested in California and Mexico. 3.
CW 09084 is a very nondormant variety with fall dormancy similar to FD
class 9 check varieties. Flower color observed in the Syn. 2 generation
is greater than 99% purple with a trace of variegated, white, cream, and
yellow. 4.
CW 09084 bas high resistance to Fusarium wilt, pea aphid, and stem
nematode, with resistance to Phytophthora root rot and spotted alfalfa
aphid, moderate resistance to blue alfalfa aphid, and low resistance to
anthracnose (race 1). Reaction to bacterial wilt, Verticillium wilt, Aphanomyces
root rot (race 1), and root knot nematode has not been adequately
tested. 5.
Seed increase of CW 09084 is on a limited generation basis with one
generation of breeder and two generations of the foundation and
certified seed classes. Breeder (Syn. l), foundation (Syn. 2 or Syn. 3),
and certified (Syn. 3 or Syn. 4) classes will be recognized. Production
of Syn. 3 foundation seed requires consent of the breeder. Breeder seed
was produced under cage isolation near Woodland, California in 2000.
Sufficient foundation seed for the projected life of the variety will be
maintained by Ca1/West Seeds. Stands of foundation and certified seed
fields are limited to 3 and 6 years, respectively. 6.
Certified seed of CW 09084 will be available in 2003. 7.
No decision bas been made regarding Plant Variety Protection. 8. This information can
be forwarded to the PVP office. 9.
Variety Name: ____________________
Date submitted:
November 30, 2003. |