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REGISTRATIONS OF CULTIVARS

Registration of ‘Lakeshore’ Kentucky Bluegrass

^a Dep of Plant Biology and Pathology, New Jersey Agric. Exp. Stn., Cook College, Rutgers Univ., 59 Dudley Rd., Foran Hall, New Brunswick, NJ 08901
^b 19664 Bernards Lane NE, St. Paul, OR 97137

^* Corresponding author (bonos{at}aesop.rutgers.edu)

‘Lakeshore’ Kentucky bluegrass (Poa pratensis L.) (Reg. no. CV-75, PI 631170) is a turf- type cultivar released in July 2001 by LESCO Inc., Rock River, OH. Lakeshore was developed from germplasm obtained from the New Jersey Agricultural Experiment Station (NJAES). The experimental designations of Lakeshore were A93-200 and NJ-GD.

Lakeshore Kentucky bluegrass originated as a single, highly apomictic (>95%) plant selected from the open-pollinated progeny of A80-336. A80-336 is an exceptionally vigorous, moderately apomictic F₁ hybrid selected from the progeny of the cross Warren's A-25 (Dale et al., 1975)/‘Touchdown’ (Rewinski et al., 1978).

A80-336 was pollinated by typical plants of ‘Sydsport’, 'Baron' (Hurley and Ghysen, 1980), and ‘Julia’ during late winter of 1985 in a greenhouse located on the Cook College campus of Rutgers University, New Brunswick, NJ. Environmental conditions before and during pollination were modified to increase sexual reproduction of facultatively apomictic Kentucky bluegrasses (Bashaw and Funk, 1987; Hintzen and van Wijk, 1985; Pepin and Funk, 1971). Seedlings from these crosses were established in a spaced-plant nursery at the Rutgers University Plant Biology and Pathology Research and Extension Farm at Adelphia, NJ, during late summer of 1985. Attractive F₁ hybrid plants from the progeny of A80-336 were selected in June 1986 and used to establish turf evaluation plots at North Brunswick, NJ, in August 1986. Remnant seed of the best performing progenies of A80-336 were used to establish a spaced-plant nursery at the Adelphia Research Farm during spring of 1992. Plant A92-446-7 was selected in June 1993. Seed harvested from this plant was used to establish plot A93-200 in a turf trial at Adelphia in October 1993. A spaced-plant progeny test was established in 1997 to evaluate the level of apomictic reproduction and to produce Breeder seed. Breeder seed was sent to St. Paul, OR, in August 1998 to establish an experimental Foundation seed increase field. The first Certified seed was harvested in July 2001.

Lakeshore is a turf-type Kentucky bluegrass with an attractive, bright, medium-dark-green color and medium-low growth habit. It has performed well in the National Turfgrass Evaluation Program in most areas where Kentucky bluegrass is adapted in North America (Bonos et al., 2001; Morris, 2003). Lakeshore produces turf with medium-fine leaves, medium shoot density, early spring green-up, and good winter color. It has shown good resistance to leaf spot and melting out [caused by Dreshclera poae (Baudys) Shoem.] (Morris, 2003) and stripe smut [caused by Ustilago striiformis (Westend.) Niessl] (Bonos et al., 2001). Lakeshore has large seed with excellent processing characteristics and has the potential of producing high seed yields under proper management. It produces extensive rhizomes, giving it good spreading and recuperative ability. It has also performed well under simulated fairway conditions in New Jersey, which included a cutting height of 1.74 cm, traffic stress, and Poa annua L. competition (Morris, 2003)

Lakeshore is compatible in blends with most other Kentucky bluegrass cultivars and in mixtures with turf-type perennial ryegrasses (Lolium perenne L.), strong creeping red fescues (Festuca rubra L. subsp. rubra), and turf-type tall fescues (F. arundinacea Schreb.). It is recommended for lawn-type turfs in regions where Kentucky bluegrass is well adapted.

Breeder seed is maintained by LESCO, Inc in cooperation with the NJAES. Seed propagation is restricted to three generations of increase: Breeder, Foundation, and Certified. Application (no. 200200142) has been made for U.S. Plant Variety Protection.

ACKNOWLEDGMENTS

Appreciation is expressed to Raymond Schaaf, George Ziemienski, Mike Reynolds, Ronald F. Bara, Dirk Smith, Melissa Mohr and all participants involved in the National Turfgrass Evaluation Program for their assistance.

NOTES

Publication no. D–12180-11-03. Some of this work was conducted as part of the NJAES Project no. 12180, supported by NJAES funds, other grants and gifts. Additional support was received from the U.S. Golf Assoc.–Golf Course Superintendents Assoc. of America Research Fund, and the New Jersey Turfgrass Assoc. Registration by CSSA.

Accepted for publication December 31, 2003.

REFERENCES

• Bashaw, E.C., and C.R. Funk. 1987. Apomictic grasses. p. 40–82. In W.E. Fehr (ed.) Principles of Cultivar Development. Vol. 2 Crop Species. Macmillan Publ. Co., New York.
• Bonos, S.A., J.A Murphy, W.A Meyer, C.R. Funk, W.K. Dickson, E. Watkins, R.F. Bara, D.A. Smith, and M.M. Mohr. 2001. Performance of Kentucky bluegrass cultivars and selections in New Jersey turf trials. Rutgers Turfgrass Proc. 2000 32:55–112.
• Dale, M.R., M.K. Ahmed, G. Jelenkovic, and C.R. Funk. 1975. Characteristics and performance of interspecific hybrids between Kentucky bluegrass and Canada bluegrass. Crop Sci. 15:797–799.[Abstract/Free Full Text]
• Hintzen, J.J., and A.J.P. van Wijk. 1985. Ecotype breeding and hybridization in Kentucky bluegrass (Poa pratensis L.). p. 213–219. In F. Lemaire (ed.) Proc. Int. Turfgrass Res. Conf., 5th, Avignon, France. INRA Publ., Paris.
• Hurley, R.H., and H. Ghysen. 1980. Registration of Baron Kentucky bluegrass. Crop Sci. 20:549–550.[Free Full Text]
• Morris, K.N. 2003. National Kentucky Bluegrass Test–2000. Progress Report 2003. NTEP No. 03–02. National Turfgrass Evaluation Program. USDA-ARS, Beltsville, MD.
• Pepin, G.W., and C.R. Funk. 1971. Intraspecific hybridization as a method of breeding Kentucky bluegrass for turf. Crop Sci. 11:445–448.[Abstract/Free Full Text]
• Rewinski, T.F., A.M. Radko, W.K. Wiley, M.C. Pick, and C.R. Funk. 1978. Registration of Touchdown Kentucky bluegrass. Crop Sci. 18:163.[Free Full Text]

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