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| Keywords | |
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Ginkgo leaf |
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cuticle |
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microscopic characters |
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climatic zone |
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paleoclimate |
| Authors | |
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WANG An-Ping-1 |
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2 |
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DONG Man-1 |
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2 |
| PubMed | |
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Article by Wang, A. P. 1 |
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Article by 2 |
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Article by Dong, M. 1 |
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Article by 2 |
Microscopic changes of cuticular characters of Ginkgo leaves in different climatic zones and their paleoclimatic significance
WANG An-Ping-1, 2, DONG Man-1, 2
1�� Key--Lab for Evolution of Past Life and Environment in NE Asia��Ministry of Education��China��Jilin University�� Changchun 130026��China; 2�� Research Center of Paleontology �� Stratigraphy��Jilin University��Changchun 130026��China; 3�� College of Earth Sciences��Jilin University��Changchun 130061��China
Based on Ginkgo materials from Guilin of Guangxi��Hefei of Anhui and Shenyang of Liaoning��the authors studied the response of Ginkgo to climatic condition in different climatic zones through the contrast of microscopic morphological characters of Ginkgo leaves and petioles�� The results show that some microscopic characters varied greatly in different climatic zones�� The stomatal length and the ratio of length to width of guard cells decreased with the increase of latitude��and the anticlinal wall width��the ratio of length to width of ordinary epidermal cells and the width of guard cells increased with the increase of latitude�� These characteristics changes may respond to the variations of temperature and precipitation of their living environment��which benefits the study of paleoclimate indicated by fossil Ginkgo through the geological time��