Effect of sand burial depth on seed germination and seedling emergence of Calligonum L. species |
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| Authors: | Calligonum |
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| Institution: | a Institute of Resources Science, Beijing Normal University, Key Laboratory of Environmental Change and Natural Disaster, Ministry of Education of China, Beijing, 100875, People's Republic of China;b Environment and Engineering Institute of Cold and Arid Regions, The Chinese Academy of Sciences, Lanzhou, 730000, Gansu, People's Republic of China;c Institute of Genetics, The Chinese Academy of Sciences, Beijing, 100080, People's Republic of China |
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| Abstract: | A greenhouse study was conducted to determine the effects of sand burial on seed germination and seedling emergence of ten Calligonum L. species. The results suggested that the deeper the seeds in sand, the lower and slower their germination and seedling emergence. Seedling emergence occurred from a maximum depth of 12 cm with most seedlings emerging from 2 and 4 cm depths. The percent seedling emergence, number of days of first emergence, percent seed germination and percent of dormant seeds were significantly affected by different species and burial depth. There was a significant positive correlation between the number of days to first emergence and burial depth. Both mean percent germination and percent seedling emergence were negatively correlated with depth significantly for each species. |
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| Keywords: | burial depth germination seedling emergence dormancy Calligonum L species |
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