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REGISTRATIONS OF GERMPLASM

Registration of ARS-2622 Birdsfoot Trefoil Germplasm

^a USDA-ARS, Plant Genetics Research Unit, Univ. of Missouri, 207 Waters, Columbia, MO 65211
^b USDA-ARS, National Forage Seed Production Research Center, Corvallis, OR 97331

^* Corresponding author (beuselinckp{at}missouri.edu)

ARS-2622 (Reg. no. GP-8, PI 631492) broad-leafed birdsfoot trefoil (Lotus corniculatus L.) germplasm was released by the USDA-ARS in cooperation with the Missouri Agricultural Experiment Station in August 2002. The merit of ARS-2622 is that it is a rhizome-producing population with a broad genetic base. Such germplasm is important because it will allow plant breeders to develop rhizomatous cultivars with diverse attributes for pasture, range, and other environments.

ARS-2622 was developed from mating the germplasm MU-81 (Beuselinck and McGraw, 1986) with five wild germplasm accessions from Morocco (PI 631539–542 and G31217). The Moroccan parents were used as the source of the rhizomatous trait. Matings with MU-81 as the maternal parent produced F₁ progeny that were verified with molecular techniques. Genetic studies have determined that expression of rhizomes is a simply inherited, dominant trait. The F₁ progeny were established at a field site near Columbia, MO, in June 1991 and evaluated through spring 1993. Progeny were evaluated for rhizome production, vigor, dry matter production, forage quality, incidence of disease, seed production, and winter hardiness. Selected progeny were vegetatively propagated to produce ramets. The ramets were planted in isolation at Columbia, MO, for open-pollinated seed production. ARS-2622 is the result of two cycles of open-pollinated recombination in the field with honey bees (Apis mellifera L.) as pollinators. Equal numbers of seed collected from each plant were mixed to produce Cycle 1, then planted at Corvallis, OR, in April 2000, from which Cycle 2 seed was bulk harvested in August 2001. The bulk seed constitutes the mid-60% maturity of the flowering cycle. Cycle 2 seeds were designated ARS-2622.

Plants from ARS-2622 are variable in morphology like MU-81. It is semierect with small- to medium-sized leaves and fine- to medium-sized stems. Flower color varies from yellow to magenta. It contains a larger number of early flowering plants and produces rhizomes. The expression of rhizomes can be influenced by genetic background, management practices, environmental conditions, and other factors.

Limited amounts of seed of ARS-2622 will be provided on written request as supplies permit. Recipients are asked to recognize the source of the germplasm if it contributes to the development of a cultivar or germplasm or is used for other research purposes. Address seed requests to Dr. Paul Beuselinck.

NOTES

Registration by CSSA.

Accepted for publication January 31, 2003.

REFERENCES

• Beuselinck, P.R., and R.L. McGraw. 1986. Registration of MU-81 birdsfoot trefoil germplasm. Crop Sci. 26:837–838.[Free Full Text]

This Article Full Text (PDF) Free Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in ISI Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via ISI Web of Science (1) Citing Articles via Google Scholar Google Scholar Articles by Beuselinck, P.R. Articles by Steiner, J.J. Search for Related Content PubMed Articles by Beuselinck, P.R. Articles by Steiner, J.J. Agricola Articles by Beuselinck, P.R. Articles by Steiner, J.J.