About the efficiency of grid selection

✍ Scribed by I. Bos

• Publisher: Springer
• Year: 1983
• Tongue: English
• Weight: 582 KB
• Volume: 32
• Category: Article
• ISSN: 0014-2336
• DOI: 10.1007/bf00042170

✦ Synopsis

Sometimes the response to grid selection is disappointing. Reasons suggested for this are: (i) selection of a fixed instead of a variable number of plants per grid, (ii) the arbitrary ways of choosing size, shape and orientation of the grids. The first reason is considered somewhat more. In addition to the common assumption that grids differ for the average growing conditions offered by them, the notion is developed that the grids are also likely to differ for the phenotypic variation among the plants in each grid. It is suggested to calculate a simple adjustment for plant yields, viz. standardization per grid, and to apply truncation selection for the adjusted yield. Some tentative results are more or less in favour of the proposed method.