| Project/Area Number |
07556007
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
作物学
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| Research Institution | NAGOYA UNIVERSITY (1997)
Kobe University (1995-1996) |
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Principal Investigator |
TATSUMI Jiro NAGOYA UNIVERSITY,SCHOOL OF AGRICULTURAL SCIENCES,PROFESSOR, 農学部, 教授 (00163486)
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| Co-Investigator(Kenkyū-buntansha) |
KOBAYASHI Nobuya KOBE UNIVERSITY,FACULTY OF AGRICULTURE,ASISTANT, 農学部附属農場, 助手 (70252799)
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| Project Period (FY) |
1995 – 1997
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| Project Status |
Completed (Fiscal Year 1997)
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| Budget Amount *help |
¥9,100,000 (Direct Cost: ¥9,100,000)
Fiscal Year 1997: ¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 1996: ¥3,000,000 (Direct Cost: ¥3,000,000)
Fiscal Year 1995: ¥4,800,000 (Direct Cost: ¥4,800,000)
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| Keywords | ROOT SYSTEM / FRACTAL DIMENSION / TOPOLOGY / ROOT ARCHITECTURE / ROOT DIAGNOSIS / 診断システム / 水稲 / 直播栽培 / ラジコンヘリ / 分枝 / 構造構造 |
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| Research Abstract |
The objectives of this research are as follows ; 1. Quantify and evaluate the morphology of crop roots through fractal analysis. 2. Develop a simple method applicable to the diagnosis of root growth and functions. 3. Simulate and estimate the distribution of whole root system in soil from the limited sample data. The final goal of the research is to develop the computer aided system for evaluating and simulating growth and function of root systems grown in soil with minimum labor and time spend for sample acquisition. 1. The major parameters affecting to fractal dimension of root systems of legume seedlings were root length, number of root tip and topology. Topology of the system can be quantified by fractal dimension with the measured data of root length and root tip number. 2. The influence magnitude of each major parameter to fractal dimension of root systems was altered by growth rate of the root. 3. The fractal dimension of root samples taken from different soil depth was varied considerably, and the distributiion profile of fractal dimension was characteristically different among rice varieties. The length and weight density of roots collected from soil cores were closely correlated with fractal dimension. These results suggest that fractal dimension is a simple and useful index for evaluating and diagnosing the root architecture and growth as well as for estimating and simulating root distribution in the field soil.
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