Genetic Diversity of Soybean Pod Shape Based on Elliptic Fourier Descriptors
2005
Truong, Ngon T. (Seoul National University, Seoul, Republic of Korea) | Gwag, J.G. (National Institute of Agricultural Biotechnology, RDA, Suwon, Republic of Korea) | Park, Y.J. (National Institute of Agricultural Biotechnology, RDA, Suwon, Republic of Korea) | Lee, S.H. (Seoul National University, Seoul, Republic of Korea), E-mail: sukhalee@snu.ac.kr
Pod shape of twenty soybean (Glycine max L. Merrill) genotypes was evaluated quantitatively by image analysis using elliptic Fourier descriptors and their principal components. The closed contour of each pod projection was extracted, and 80 elliptic Fourier coefficients were calculated for each contour. The Fourier coefficients were standardized so that they were invariant of size, rotation, shift, and chain code starting point. Then, the principal components on the standardized Fourier coefficients were evaluated.
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