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Volume 15 Issue 2
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Article Navigation >  Forest Research  > 2002 >  15(2): 212-218

Citation:
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Number of Individuals per Clone and per Plot Required for Clone Test of Growth Character and Wood Density of Chinese Fir

  • 1.

    Guangdong Forestry Research Inst itute, Guangzhou 510520, Guangdong, China

  • 2.

    Forest ry Farm of Zhaoqing, Guangdong Province, Zhaoqing 526020, Guangdong, China

  • 3.

    Forestry Farm of Qujiang, Guangdong Province, Qujiang 512100, Guangdong, China

  • Received Date: 2001-05-06
  • Based on the samplings of individuals from different clones and plots in a clone testing stand of Chinese fir (Cunninghamia lanceolata)at age 7,the paper made the estimation of clone rank correlation and clone repeatability on the height,DBH,volume and the wood density.The results showed that over 20 individuals per clone were sufficient to reliable growth test,30 individuals per clone were better.The number of individuals per plot was different among different numbers of individuals per clone.Fewer tree plots would be chosen if the number of individuals tested per clone were fewer,more tree plots would be chosen if the number was more.For the testing of wood density,the number of individuals per clone should be more than 6,but the sampling number of plot was 1,and that was the plus tree.
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Number of Individuals per Clone and per Plot Required for Clone Test of Growth Character and Wood Density of Chinese Fir

  • 1. Guangdong Forestry Research Inst itute, Guangzhou 510520, Guangdong, China
  • 2. Forest ry Farm of Zhaoqing, Guangdong Province, Zhaoqing 526020, Guangdong, China
  • 3. Forestry Farm of Qujiang, Guangdong Province, Qujiang 512100, Guangdong, China
  • Received Date: 2001-05-06

Abstract: Based on the samplings of individuals from different clones and plots in a clone testing stand of Chinese fir (Cunninghamia lanceolata)at age 7,the paper made the estimation of clone rank correlation and clone repeatability on the height,DBH,volume and the wood density.The results showed that over 20 individuals per clone were sufficient to reliable growth test,30 individuals per clone were better.The number of individuals per plot was different among different numbers of individuals per clone.Fewer tree plots would be chosen if the number of individuals tested per clone were fewer,more tree plots would be chosen if the number was more.For the testing of wood density,the number of individuals per clone should be more than 6,but the sampling number of plot was 1,and that was the plus tree.

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