Improving the assessment method of seed vigor in Cunninghamia lanceolata and Pinus massoniana based on oxygen sensing technology |
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Authors: | Guang-wu Zhao Tai-lin Zhong |
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Institution: | ZHAO Guang-wu ZHONG Tai-lin College of Agriculture and Food Science, Zhejiang Agriculture and Forestry University, Lin’an 311300, People’s Republic of China. Tianmu College, Zhejiang Agriculture and Forestry University, Lin’an 311300, People’s Republic of China. |
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Abstract: | Oxygen sensing technology was employed to study the rapid methods for seed vigor assessment of Chinese fir (Cunninghamia lanceolata) and Masson pine (Pinus massoniana). Firstly, seeds of five lots were performed using accelerated aging (AA) into three vigor levels. Then, four oxygen sensing
indices, including increased metabolism time (IMT), oxygen metabolism rate (OMR), critical oxygen pressure (COP), relative
germination time (RGT) and the control indices such as laboratory germination indices, dehydrogenase activity (DA), and electrical
conductivity (EC) were analyzed by the tests of 15 samples. The results of correlation analysis between these indices and
field emergence performances based on two-year and two-spot data showed that RGT and OMR should be indicated as the optimal
oxygen sensing indices to rapidly and automatically evaluate seed vigor of Chinese fir and Masson pine, respectively. On the
basis, one-variable linear regression equations were built to forecast their field emergence performances by the two oxygen
sensing indices. |
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Keywords: | Cunninghamia lanceolata Pinus massoniana seed vigor oxygen sensing |
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