| Project/Area Number |
08640903
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
系統・分類
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| Research Institution | National Science Museum |
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Principal Investigator |
HIGUCHI Masanobu National Science Museum, Department of Botany, Senior Curator, 植物研究部, 主任研究官 (10189772)
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| Project Period (FY) |
1996 – 1997
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| Project Status |
Completed (Fiscal Year 1997)
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| Budget Amount *help |
¥1,800,000 (Direct Cost: ¥1,800,000)
Fiscal Year 1997: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1996: ¥1,400,000 (Direct Cost: ¥1,400,000)
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| Keywords | polysety / mosses / phylogeny / Mniaceae / Polytrichaceae / Bryaceae / reproduction / sporophyte |
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| Research Abstract |
1. Polysety of four species of Polytrichaceae, Bryaceae and Mniaceae was studied based on the Chineses materials. In Pogonatum fastigiatum, over 90% of the fertile shoots were monosetous, though one shoot with three setae was present.
2. Polysety in Pseudobryum speciosum was investigated based on material from three localities in central Japan. The frequency of polysety is discussed. In each material over 80% of the fertile shoots were polysetous. The number of setae in a shoot varied from one to eight, and two or three was the most common. A comparison of the number of sporophytes per shoot and the shoot length is described. There was no definite correlation between them.
3. Polysety in Dicranum polysetum was investigated based on material from central Japan. The frequency of polysety is discussed. Totally over 80% of the fertile shoots were polysetous. The number of setae in a gametoecium varied from one to six, and three was the most common. The frequency of polysety was different among populations in a small area. A comparison of the number of sporophytes per gametoecium and its correlation to shoot length is described, but no definite correlation was found.
4. Japanese mosses was investigated with reference to polysety based on literature and specimens. Polysety was recorded in 42 species belonging 14 families comprising 1 family of Sphagnidae and 13 families of Bryidae. Among 13 families of Bryidae 10 families are acrocarpous. Examing the specimens of the species in the remaining 3 pleurocarpous familes, no specimens showing polysety were found. Polysety could be restricted in the acrocarpous group.
5. Polysety was recognized in Venturiella sinensis (Erpodiaceae) for the first time.
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