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SummerGold |
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1. SummerGold is a synthetic variety with 200 parent plants that were
selected sequentially for multifoliolate leaf expression and for
resistance to Phytophthora root rot and Aphanomyces root rot (race 1).
Parent plants were selected from crosses between selections from
three-year old Minnesota and Wisconsin yield trials and selections from
three-year old Wisconsin nurseries. Yield trial source varieties and
nursery source plants were selected from various populations that were
developed by phenotypic recurrent selection for high relative feed value
(using Near Infrared Reflectance Spectroscopy), and for resistance to
one or more of the following pests: bacterial wilt, Fusarium Wilt,
Verticillium wilt, Phytophthora root rot, Aphanomyces root rot (race 1),
anthracnose (race 1), and Leptosphaerulina leafspot. Parentage of SummerGold traces to the following germplasm
sources: WinterGold, 9429, Alliant, DK 142, FQ 315, Trialfalon, BigHorn,
9326, Stallion, DK 133, and miscellaneous Cal/West Seeds breeding
populations. Approximate germplasm source contributions are as follows:
M. falcata (8%), Ladak (5%), M. varia (24%), Turkistan (6%), Flemish
(50%), and Chilean (7%). 2. SummerGold is
adapted to the North Central area of the U.S. and is intended for use in
the North Central, East Central, and Great Plains areas of the U.S.
SummerGold has been tested in Wisconsin, Iowa, and Minnesota. 3. SummerGold is a
moderately dormant variety with fall dormancy similar to FD class 4
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. SummerGold has high resistance to anthracnose (race 1), bacterial wilt, Fusarium wilt, Phytophthora root rot, Aphanomyces root rot (race 1), and stem nematode with resistance to pea aphid and northern root knot nematode (Meloidogyne hapla). Reaction to Verticillium wilt, spotted alfalfa aphid, and blue alfalfa aphid has not been tested 5.
Seed increase of
SummerGold is on a limited generation basis with one generation of
breeder and two generations of the foundation and certified seed
classes. Breeder (Syn. 1), 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, Ca1ifornia
in 1999. Sufficient foundation seed for the projected life of the
variety will be maintained by Cal/West Seeds. Stands of foundation and
certified seed fields are limited to 3 and 6 years, respectively. 6.
Certified seed of SummerGold 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:
SummerGold
Date submitted: November 30, 2003. Experimental
Design: CW 94023 |