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| Web URL(s): | http://www.jstor.org/stable/pdf/10.2307/2258886.pdf
Last checked: 01/14/2016
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| Publication Type:
| Refereed |
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| Author(s): | Sarukhan, Jose |
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| Author Affiliation: | School of Plant Biology, University College of North Wales, Bangor, Caerns |
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| Title: | Studies on plant demography: Ranunculus repens L., R. Bulbosus L. and R. Acris L. II.Reproductive strategies and seed population dynamics |
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| Source: | Journal of Ecology. Vol. 62, No. 1, March 1974, p. 151-177. |
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| Publishing Information: | Cambridge: University Press |
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| Keywords: | TIC Keywords: Demographics; Ranunculus repens; Ranunculus bulbosus; Ranunculus acris; Reproduction; Population; Stress; Lolium perenne; Lolium multiflorum; Poa annua; Plantago lanceolata; Dormancy; Reproductive performance
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| Geographic Terms: | msu |
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| Abstract/Contents: | Any successful species possesses a reproductive capacity at least sufficient to replace the natural wastage of its population. The fraction of its available resources that a species devotes to reproduction may vary with environmental and genetic factors and is a co-adapted part of the whole process that constitutes a life history. One of the best studied examples of the regulation of reproductive effect is for clutch-size in birds (Lack 1954; Cody 1966). Harper (1958, 1961, 1964) has shown that plants (except some cultivars of Helianthus annuus) under different levels of density stress modify their reproductive output, sacrificing numbers of fruits and seeds, but tends to maintain seed size rather constant. The annual weed Agrostemma githago, for example, absorbs the effects of increased density in individual plasticity, particularly by reduction in the number of branches (and hence the number of capsules produced) and also in the number of seeds per capsule. However, individual seed weight remains almost unaffected over a range of density stress (Harper & Gajic 1961). |
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| Language: | English |
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| References: | 51 |
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| Note: | Figures
Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Sarukhan, J. 1974. Studies on plant demography: Ranunculus repens L., R. Bulbosus L. and R. Acris L. II.Reproductive strategies and seed population dynamics. J. Ecol. 62(1):p. 151-177. |
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| Web URL(s):
http://www.jstor.org/stable/pdf/10.2307/2258886.pdf
Last checked: 01/14/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: QH 540 .J6 |
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