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| DOI: | 10.4141/cjps96-052 |
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| Web URL(s): | http://pubs.aic.ca/doi/pdfplus/10.4141/cjps96-052
Last checked: 10/01/2015
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| Publication Type:
| Refereed |
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| Author(s): | Fairey, N. A.;
Lefkovitvh, L. P. |
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| Author Affiliation: | Northern Agriculture Research Centre, Agriculture and Agri-Food Canada, P. O. Box 29, Beaverlodge, Alberta, Canada T0H 0C0; Headquarters (Western Region), Agriculture and Agri-Food Canada, Research Branch, Central Experimental Farm, Ottawa, Ontario, Canada K1A 0C6 |
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| Title: | Crop density and seed production of creeping red fescue (Festuca rubra L. var. rubra). 2. Reproductive components and seed characteristics |
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| Source: | Canadian Journal of Plant Science. Vol. 76, No. 2, April/Avril 1996, p. 299-306. |
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| Publishing Information: | Ottawa: Agricultural Institute of Canada |
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| # of Pages: | 8 |
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| Keywords: | TIC Keywords: Seed yield; Seedheads; Plant density; Growth rate; Festuca rubra subsp. rubra; Seed production; Reproduction; Seed quality
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| Abstract/Contents: | "The natural growth habit of creeping red fescue (Festuca rubra L. var. rubra) involves a steady proliferation of tillers which eventually become too dense to form seedheads. The effects of the initial density (1.6, 3.1, 6.3, 12.5, 25, 50 and 100 plants mā»Ā²) and row spacing (20, 40, and 80 cm) on reproductive components and seed characteristics of red fescue were studied in a northerly environment for three production years (1991-1993). The weight proportion of cleaned to uncleaned seed decreased as density increased, from 82% at 1.6 plants mā»Ā² to 60% at 100 plants mā»Ā². The thousand-seed weight was 1.20-1.54 g (i.e., 830 000-650 000 seeds kg ā»Ā¹) and decreased as density increased. The specific seed weight was 16-25 kg hLā»Ā¹; it differed among years, averaging 87, 92 and 69% in three consecutive production years. The seed yield per plant, the number of seedheads per plant, and the number of seeds per plant decreased exponentially as the density increased. The number of seeds per seedhead decreased as density increased in the first year but was less affected subsequently, except in the third year at 50 and 100 plants mā»Ā² on 20-cm rows, when no seeds were matured. The seed yield was correlated closely with the number of seedheads per square metre, which increased with density in the first year but decreased as density increased in the two subsequent years. A relatively high density of well-spaced plants is required at establishment to optimize seedhead formation in the first crop but is detrimental to seedhead formation and seed yield subsequently." |
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| Language: | English |
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| References: | 20 |
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| Note: | Abstract in French and English
Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Fairey, N. A., and L. P. Lefkovitvh. 1996. Crop density and seed production of creeping red fescue (Festuca rubra L. var. rubra). 2. Reproductive components and seed characteristics. Can. J. Plant Sci. 76(2):p. 299-306. |
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| DOI: 10.4141/cjps96-052 |
| Web URL(s):
http://pubs.aic.ca/doi/pdfplus/10.4141/cjps96-052
Last checked: 10/01/2015
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: SB 1 .C3 |
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