REBOUND 4.2
1. Rebound 42 is a synthetic variety with 17 parent clones. Parents were selected for forage yield,
persistence, forage quality, rapid recovery after cutting, and multifoliolate expression from two-and
three-year-old Wisconsin breeding nurseries. Parents trace to breeding populations selected for
multifoliolate expression and resistance to one or more of the following pests: bacterial wilt,
Fusarium, wilt, Phytophthora root rot, Aphanomyces root rot (race 1), Verticillum wilt, anthracnose
(race 1), Leptosphaerulina leaf spot, pea aphid and spotted alfalfa aphid. Recurrent phenotypic
selection was used. Germplasm. sources used in developing Rebound 4.2 were: DK 127 (25%),
Lightning (20%), LegenDairy 2.0 (15%), Rushmore (100/o), Excalibur II (10%), 5262 (10%),
Magnum III (5%) and G2852 (5%). Syn1 was produced near Nampa, Idaho, in 1995, harvested in
total and bulked to form breeder seed. Approximate germplasm. source contributions are: M.
falcate (6%), Ladak (4%), M varia (32%), Turkistan (3%), Flemish (52%), and Chilean (3%).
2. This variety is adapted to the north central United States and intended for use in the north central
United States. it has been tested in Wisconsin, Iowa, and Minnesota.
3. Fall dormancy of this variety is similar to the FD4 checks and winter survival of this variety is
similar to WS1 checks. Flower color in the syn2 is 68% purple and 32% variegated, with a trace of
cream, white, and yellow. Rebound 4.2 has high multifoliolate leaf expression.
4. This variety has high, resistance to anthracnose (race 1), bacterial wilt, Fusarium wilt, Verticillium
wilt, Phytophthora root rot, and Aphanomyces root rot (race 1); resistance to pea aphid, and spotted
alfalfa aphid; and moderate resistance to stem nematode. Reaction to blue alfalfa aphid and root
knot nematode has not been tested.
5. Seed increase is on a limited generation basis with one generation of breeder and two generations
of foundation and certified seed classes. Breeder (syn1), foundation (syn2 or3), and certified (syn3
or 4) classes will be recognized. Production of syn3 foundation seed requires consent of the
breeder. Breeder seed was produced near Nampa, Idaho, in 1995. Sufficient foundation seed for
the projected life of the variety will be maintained by Forage Genetics. Stands of foundation and
certified seed fields are limited to three and five years, respectively.
6. Certified seed will be marketed in 1999.
7. No decision has been made concerning Plant Variety Protection Act.
8. This information can not be forwarded to the Plant Variety Protection Office.
9. Variety name: Rebound 4.2
Experimental designations: FG 4G73
Date first accepted: January 1999
Date this amendment submitted: November 1, 1999
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