Full TGIF Record # 105279
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Publication Type:
i
Report
Author(s):Larsen, S. U.; Andreasen, C.
Author Affiliation:Larsen:Danish Center for Forest, Landscape and Planning, Frederiksberg, Denmark; and Andreasen: Department of Agricultural Sciences, The Royal Veterinary and Agricultural University, Frederiksberg, Denmark
Title:Comparison of germination criteria in red fescue (Festuca rubra ssp. litoralis), perennial ryegrass (Lolium perenne) and Kentucky bluegrass (Poa pratensis)
Source:Seed Science and Technology. Vol. 32, No. 2, 2004, p. 341-354.
# of Pages:14
Publishing Information:Zurich: International Seed Testing Association
Keywords:TIC Keywords: Seed germination; Germination; Species trials; Comparisons; Festuca rubra subsp. rubra; Lolium perenne; Poa pratensis; Establishment rate; Radicles; Coleoptiles; Cotyledons; Seedlings
Abstract/Contents:"Several different germination criteria are used in germination studies. The aim of this study was to evaluate three different germination criteria in three grass species by comparing each criterion with the normal seeding criterion and by comparing mean germination time (MGT). The three species were slender creeping red fescue (Festuca rubra ssp. litoralis), perennial ryegrass (Lolium perenne) and Kentucky bluegrass (Poa pratensis). THe three criteria were based on the emergence of a radicle (>=2 mm), a coleoptile (>=2 mm), or a cotyledon from the coleoptile (>=1 mm). All three criteria provided results that had strong linear relationships with percentage normal seedings with overall standard error not exceeding 1.52% (R2 = 0.95 to 0.97). For all criteria, the relationship had slopes significantly different from one and intercepts significantly different from zero. Thus, all three criteria tended to overestimate the number of normal seedlings slightly, particualrly at lower germination percentages. The variation in percentage of normal seedlings was best described by the radicle criterion and poorest by the coleoptile criterion, but the differences were very small. We suggest that choice of criteria should be determined by the convenience of assessing the different seedling structures.
Language:English
References:45
See Also:Reprint appears as "Paper III" in A Study of Factors Affecting Germination, Establishment, and Competition of the Turfgrass Species Red Fescue (Festuca rubra L. spp. litoralis Vasey), Perennial Ryegrass (Lolium perenne L.), and Kentucky Bluegrass (Poa pratensis L.), 2004, p. 61-76, R=105277 R=105277
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ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Larsen, S. U., and C. Andreasen. 2004. Comparison of germination criteria in red fescue (Festuca rubra ssp. litoralis), perennial ryegrass (Lolium perenne) and Kentucky bluegrass (Poa pratensis). Seed Sci. Technol. 32(2):p. 341-354.
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