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645-11
1. 645-11
has 298 parent plants tracing to the variety Garst 645. Garst 645 was seeded
into large
replicated
plots near Warrensburg, Missouri, in April 199 1. Plots were grazed continuously
for approximately
75 days in 1991 and 130 days in both 1992 and 1993. Plots were undercut
in October
1993 with the healthiest plants with large symmetrical crowns saved. Breeder
seed was
produced in the greenhouse on the original 298 parent plants and harvested
in bulk
in March
1994. Additional breeder seed was produced in the field near Nampa, Idaho,
in
1994 from
the original parent plants plus approximately 20 cuttings of each clone
transplanted
at random and harvested in bulk.
2. 645-11
appears to be adapted to the north central and east central regions of
the U.S. It is
intended
for use in the north central and east central regions of the U.S. It has
been tested
in
Iowa, Wisconsin and Illinois.
3. Fall
dormancy of 645-11 is similar to the FD 3 check Ranger. Flower color of
syn2
generation
is approximately 7 1 % purple and 29% variegated with a trace of cream,
yellow
and white.
Grazing tolerance is similar to Alfagraze.
4. 645-11
has high resistance to bacterial wilt Verticillium wilt, Fusarium wilt,
anthracnose (race
1), Phytophthora
root rot, and Aphanomyces root rot (race 1) and resistance to pea aphid.
It has
not been tested for reaction to blue alfalfa aphid, spotted alfalfa aphid,
stein nematode
and root
knot nematode.
5. Seed
increase is limited to one generation each of breeder (synl), foundation
(syn2) and
certified
(syn3) seed classes. Certified seed may be produced from either breeder
or
foundation
classes. A one, three and six year stand life is permitted on fields producing
breeder,
foundation and certified seed classes respectively. Foundation seed production
is
limited
to the Pacific Northwest. Breeder seed was produced in 1994. ABI will maintain
sufficient
seed stocks for the life of the variety.
6. Certified
seed will be available in 2000.
7. Application
will not be made for Plant Variety Protection.
8. This
information can be forwarded to the PVP office.
9. Variety
name: 645-11
Date submitted:
November 1999
Experimental
designations: ZG 9437
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