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. 2011 Dec 12;7:44. doi: 10.1186/1746-4811-7-44

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Copyright ©2011 Duan et al; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Performance of the image analysis algorithms with manually threshed spikelets. Scatter plots of manual measurements versus automatic measurements with manually threshed spikelets for the number of total spikelets and the number of filled spikelets are shown. Ninety Huageng 295 rice plants were used as samples in the evaluation experiment. Least squares linear regression produced the following results: (a) number of total spikelets: line of best fit: y = 1.01x-2.85, correlation coefficient r = 0.9995, (b) number of filled spikelets: line of best fit: y = 0.998x-1.65, correlation coefficient r = 0.9998.