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| Web URL(s): | http://www.jstor.org/stable/pdf/10.2307/2261032.pdf
Last checked: 01/14/2016
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| Publication Type:
| Refereed |
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| Author(s): | Billington, H. L.;
Mortimer, A. M.;
Mcneilly, T. |
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| Author Affiliation: | Department of Botany, University of Liverpool |
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| Title: | Survival and Reproduction in Adjacent Grass Populations: Effects of Clone, Time and Environment |
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| Source: | Journal of Ecology. Vol. 78, No. 1, March 1990, p. 1-14. |
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| Publishing Information: | Blackwell Scientific Publications |
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| Keywords: | TIC Keywords: Holcus lanatus; Phenotypes; Genotypes; Clones; Environment
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| Abstract/Contents: | "(1) This study assessed the relative contributions of plant genotype and two environmental variables to phenotypic variability in demographic traits within adjacent populations of the perennial grass Holcus lanatus. Replicated clones were established in six simulated introductions, or cohorts, in a reciprocal-transplant experiment. (2) In the 'improved' population, when clonal replicates were transplanted back into their field of origin, survival to reproduction and survival over the two years of the experiment had no significant genetic components of variation. In the 'traditional' population, in its field or origin, variation in survival to reproduction had a genetic component of 47%, and survival to the end of the experiment had a genetic component of 16%. Because the total phenotypic variances were not different, this suggests that the first population had greater phenotypic plasticity. Variation in number of inflorescences produced by each transplant had a genetic component of 9% in the improved population and 45% in the traditional population. (3) Genotype-environment interaction effects resulted in different relative contributions of genetic and environmental effects when the same traits were measured in the alien field. In all cases variation due to the environment, or phenotypic plasticity, was greater than the genetic variation plus phenotypic carry-over effects. (4) There was no evidence to suggest that clonal transplants had greater vegetative survival in their home fields. For the reproductive character measured (the number of inflorescences per transplant), however, two clones from the traditional populations produced more inflorescences in their field of origin; the number of seeds per inflorescence did not vary. No evidence for a trade-off between reproduction and survival over the two year experiment was found. (5) Repeating the reciprocal-transplant experiment at five-week intervals showed that time of transplanting significantly affected the survival and reproductive traits measured. This has important implications for the interpretation of other transplant studies where only one introduction of transplants takes place." |
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| Language: | English |
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| References: | 35 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Billington, H. L., A. M. Mortimer, and T. Mcneilly. 1990. Survival and Reproduction in Adjacent Grass Populations: Effects of Clone, Time and Environment. J. Ecol. 78(1):p. 1-14. |
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| Web URL(s):
http://www.jstor.org/stable/pdf/10.2307/2261032.pdf
Last checked: 01/14/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
| 
MSU catalog number: QH 540 .J6 |
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