HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

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 HighWire Citing Articles via ISI Web of Science (1) Citing Articles via Google Scholar Google Scholar Articles by Brede, A.D. Search for Related Content PubMed Articles by Brede, A.D. Agricola Articles by Brede, A.D.

REGISTRATIONS OF CULTIVARS

Registration of ‘BlueChip’ Kentucky Bluegrass

Simplot/Jacklin Seed, West 5300 Riverbend Ave., Post Falls, ID 83854-9499

^* Corresponding author (dbrede{at}simplot.com)

‘BlueChip’ Kentucky bluegrass (Poa pratensis L.) (Reg. no. CV-71, PI 599224) is a turf-type cultivar released in August 1997 by the J.R. Simplot Co., Jacklin Seed, Post Falls, ID. Experimental designations for BlueChip were 92-1991 and MED-1991.

BlueChip was developed from a highly apomictic, single-plant selection from progeny of hybrid cross 90-0336. Pollen from breeding line 50-14 was applied in the field in June 1990 to panicles of ‘Limousine’ Kentucky bluegrass (Alderson and Sharp, 1994). Breeding line 50-14 originated from a collection by the late Arden Jacklin, made in the northeastern USA during the 1970's. Seed harvested from Limousine plants were sown in greenhouse flats and later transferred to a field nursery of 28 800 plants near Post Falls in June 1991. Offspring with characteristics dissimilar to Limousine were flagged during maturation in spring of 1992, and plant 92-1991 was identified as being different from Limousine by its leaf texture and color before heading. A single spaced-plant of 92-1991 produced 75 g of clean seed, which was approximately five times the seed production typical for a 1-yr-old bluegrass spaced plant in northern Idaho. Seed harvested from this plant was used to establish a turf trial in September 1992 and a seed yield trial in August 1996 at Post Falls.

Spaced plants of BlueChip most closely resemble ‘Baron’ Kentucky bluegrass (Hurley and Ghijsen, 1980), although BlueChip has no Baron in its background. BlueChip seedheads have excellent floret fertility and very large seed, averaging 2 000 000 seeds kg^-1. Panicle color of BlueChip at pollination appears more purplish than Baron. BlueChip also has darker green foliage than Baron. In spaced-plant nurseries, BlueChip averages 90% apomictic plants, but varies depending on weather and growing conditions. Aberrant progeny are rogued from seedstock fields to ensure continued uniformity and stability, but they will continue to occur in every generation. In 8 yr of commercial seed production, BlueChip has produced high yields of quality seed, with freedom from ergot honeydew and sclerotia [caused by Claviceps purpurea (Fr.) Tul.], and no adverse reactions to labeled Kentucky bluegrass pesticides.

BlueChip was tested in the National Turfgrass Evaluation Program (NTEP) medium-high maintenance trial, established in 1995 (Morris, 2001), where it demonstrated good wear and frost tolerance, and a dark green autumn color. BlueChip showed good resistance to Microdochium patch {caused by Microdochium nivale (Fr.) Samuels and Hallett [teleomorph: Monographella nivalis (Schaf) E. Muller]}, spring melting out [caused by Drechslera poae (Baudys) Shoem], seedling damping off (caused by Pythium, Rhizoctonia, and Fusarium spp.), and chinch bug (Blissus leucopterus hirtus Montandon). BlueChip had moderately good resistance to gray snow mold (caused by Typhula idahoensis Remsberg), stem rust (caused by Puccinia graminis Pers.:Pers.), and billbug (Sphenophorus spp.).

BlueChip is recommended for lawns, golf courses, parks, and sports turf in areas where Kentucky bluegrass is well adapted for turf. It can be grown in full sun or some shade. BlueChip is compatible in blends and mixtures with other cool-season turfgrasses.

Breeder seed, first harvested in 1995, is maintained by Simplot/Jacklin Seed. Propagation is limited to four cycles of seed increase: Breeders, Foundation, Registered, and Certified. U.S. Plant Variety Protection application no. 9700384 has been filed for BlueChip.

NOTES

Registration by CSSA.

Accepted for publication April 30, 2003.

REFERENCES

• Alderson, J., and W.C. Sharp. 1994. Grass varieties in the United States. Agric. Handb. 170. USDA-SCS. U.S. Gov. Print. Office, Washington, DC.
• Hurley, R.H., and H. Ghijsen. 1980. Registration of ‘Baron’ Kentucky bluegrass. Crop Sci. 20:549.[Free Full Text]
• Morris, K.N. 2001. National Kentucky bluegrass test 1995– medium-high maintenance. Final report. NTEP no. 01–12. National Turfgrass Evaluation Program. USDA-ARS, Beltsville, MD.

This article has been cited by other articles:

				A. D. Brede Registration of 'Barrister' Kentucky Bluegrass Crop Sci., November 21, 2006; 46(6): 2718 - 2719. [Full Text] [PDF]

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 HighWire Citing Articles via ISI Web of Science (1) Citing Articles via Google Scholar Google Scholar Articles by Brede, A.D. Search for Related Content PubMed Articles by Brede, A.D. Agricola Articles by Brede, A.D.