Importance of population size for offspring fitness at conservation of the gene pool of cultivars
Effective population size for conservation of cultivated plants was studied in Coreopsis grandiflora on populations in variants of 1, 5, 10, 30, 50 and 100 individuals. In five consecutive years these traits were studied on seeds originating from parental populations: seed number and weight per infr...
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| Format: | Article |
| Language: | English |
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Czech Academy of Agricultural Sciences
2013-09-01
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| Series: | Horticultural Science |
| Subjects: | |
| Online Access: | https://hortsci.agriculturejournals.cz/artkey/hor-201303-0006_importance-of-population-size-for-offspring-fitness-at-conservation-of-the-gene-pool-of-cultivars.php |
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| author | H. Urbánek V. Benetka |
| author_facet | H. Urbánek V. Benetka |
| author_sort | H. Urbánek |
| collection | DOAJ |
| description | Effective population size for conservation of cultivated plants was studied in Coreopsis grandiflora on populations in variants of 1, 5, 10, 30, 50 and 100 individuals. In five consecutive years these traits were studied on seeds originating from parental populations: seed number and weight per infructescence, thousand seed weight and germination. Plant height and flower size were investigated in a field trial. The influence of population size was expressed mainly in traits of early life-history stages. Inbreeding depression influenced germination already in the first year and was similar for the five years while seed weight was influenced from the second year. In the fifth year there were significant differences among variants of 30 individuals and less and variant of 50 individuals in all evaluated traits. The results document that mostly cross-pollinated cultivars of a population smaller than 50 individuals are exposed to impairment. The population of 10 individuals and less is at risk of extinction. This result will be influenced by the level of cross-pollination and degree of selection. |
| first_indexed | 2024-04-10T08:22:45Z |
| format | Article |
| id | doaj.art-6b65af83f2694442b753f90fffab771b |
| institution | Directory Open Access Journal |
| issn | 0862-867X 1805-9333 |
| language | English |
| last_indexed | 2024-04-10T08:22:45Z |
| publishDate | 2013-09-01 |
| publisher | Czech Academy of Agricultural Sciences |
| record_format | Article |
| series | Horticultural Science |
| spelling | doaj.art-6b65af83f2694442b753f90fffab771b2023-02-23T03:34:48ZengCzech Academy of Agricultural SciencesHorticultural Science0862-867X1805-93332013-09-0140313113710.17221/179/2012-HORTSCIhor-201303-0006Importance of population size for offspring fitness at conservation of the gene pool of cultivarsH. Urbánek0V. Benetka1Silva Tarouca Research Institute for Landscape and Ornamental Gardening, Průhonice, Czech RepublicSilva Tarouca Research Institute for Landscape and Ornamental Gardening, Průhonice, Czech RepublicEffective population size for conservation of cultivated plants was studied in Coreopsis grandiflora on populations in variants of 1, 5, 10, 30, 50 and 100 individuals. In five consecutive years these traits were studied on seeds originating from parental populations: seed number and weight per infructescence, thousand seed weight and germination. Plant height and flower size were investigated in a field trial. The influence of population size was expressed mainly in traits of early life-history stages. Inbreeding depression influenced germination already in the first year and was similar for the five years while seed weight was influenced from the second year. In the fifth year there were significant differences among variants of 30 individuals and less and variant of 50 individuals in all evaluated traits. The results document that mostly cross-pollinated cultivars of a population smaller than 50 individuals are exposed to impairment. The population of 10 individuals and less is at risk of extinction. This result will be influenced by the level of cross-pollination and degree of selection.https://hortsci.agriculturejournals.cz/artkey/hor-201303-0006_importance-of-population-size-for-offspring-fitness-at-conservation-of-the-gene-pool-of-cultivars.phpinbreeding depressioncross-pollinated cultivarscoreopsis grandiflora |
| spellingShingle | H. Urbánek V. Benetka Importance of population size for offspring fitness at conservation of the gene pool of cultivars Horticultural Science inbreeding depression cross-pollinated cultivars coreopsis grandiflora |
| title | Importance of population size for offspring fitness at conservation of the gene pool of cultivars |
| title_full | Importance of population size for offspring fitness at conservation of the gene pool of cultivars |
| title_fullStr | Importance of population size for offspring fitness at conservation of the gene pool of cultivars |
| title_full_unstemmed | Importance of population size for offspring fitness at conservation of the gene pool of cultivars |
| title_short | Importance of population size for offspring fitness at conservation of the gene pool of cultivars |
| title_sort | importance of population size for offspring fitness at conservation of the gene pool of cultivars |
| topic | inbreeding depression cross-pollinated cultivars coreopsis grandiflora |
| url | https://hortsci.agriculturejournals.cz/artkey/hor-201303-0006_importance-of-population-size-for-offspring-fitness-at-conservation-of-the-gene-pool-of-cultivars.php |
| work_keys_str_mv | AT hurbanek importanceofpopulationsizeforoffspringfitnessatconservationofthegenepoolofcultivars AT vbenetka importanceofpopulationsizeforoffspringfitnessatconservationofthegenepoolofcultivars |