2013 Fiscal Year Final Research Report
Simultaneous evaluation of paternal and maternal gametic dynamics of Pinus densiflora dispersed seeds at the landscape scale
| Project/Area Number |
23780171
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Forest science
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| Research Institution | Forestry and Forest Products Research Institute |
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Principal Investigator |
IWAIZUMI Masakazu G. 独立行政法人森林総合研究所, 林木育種センター関西育種場, 主任研究員 (50391701)
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| Project Period (FY) |
2011 – 2013
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| Keywords | アカマツ / 遺伝子流動 / 景観 / 雌性配偶体 |
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| Research Abstract |
To evaluate detailed genetic connectivity among natural populations of Pinus densiflora at the landscape scale, genetic diversity and heterogeneity of both paternal and maternal gametes of the dispersed seeds were assessed separately and accurately for the adjacent 9 populations in an in-situ conservation forest. Allelic diversity of paternal gametes was generally high and the genetic composition was nearly homogeneous among populations within landscape. On the other hand, maternal gametes of the population with less than 200 adult trees had significantly low allelic diversity. Genetic compositions of maternal gametes were more heterogeneous among populations, and also showed a significant spatial autocorrelation within up to 200m. These results would be fundamental information to consider about the population size and the number of nearby populations in the conservation forest, which can secure genetic diversity of the next generation and also frequent interpopulation gene flow.
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[Presentation] Geographic clines in nuclear microsatellite diversity and structure and cone characteristic variation of Pinus densiflora natural populations in Japan2013
Author(s)
Iwaizumi, M.G., Ohtani, M., Tsuda, Y., Hiraoka, K., Miyamoto, N., Takahashi, M. and Tsumura, Y
Organizer
IUFRO Forest Genetics 2013
Place of Presentation
Hilton Whistler Resort、Whistler、Canada
Year and Date
2013-07-24
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