Classification and Characteristic of Maturity Groups of Chinese Landraces of Soybean [Glycine max (L.) Merr.] |
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Authors: | Wang Yuesheng Qin Jianbing Gai Junyi He Guangyuang |
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Institution: | (1) China-UK HUST-RRes Crop Genetic Engineering and Genomics Joint Laboratory, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China;(2) Soybean Research Institute, Nanjing Agricultural University, Nanjing, 210095, China |
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Abstract: | To link Chinese soybean classification with the world soybean maturity group system suggested by American researchers, 264
soybean landraces from China and 48 varieties of 13 soybean maturity groups from the United States (US) were tested under
the natural and extended day-length at Nanjing, China. Based on comparing Chinese with the US soybeans in days to maturity,
Chinese soybean landraces were classified into maturity group (MG) 000, 00, 0, I, II,..., IX, which only MG X might not exist
in China. Chinese soybean landraces in each of MG 0, I, II and III revealed large variation in days to flowering and were
almost grown in all eco-regions in China. These four maturity groups were further divided into eight sub-groups according
to the variation in days to flowering and geographical distribution of soybeans of the same maturity group. The geographic
distribution of soybean maturity groups in China was also presented in this paper. This study should be significant for soybean
researchers in the world to understand the whole feature of Chinese soybean landraces germplasm. |
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Keywords: | Geographical distribution Glycine max Maturity group Soybean landraces |
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