| 孑遗植物银杏（Ginkgo bilobaL．）雌雄株水分生理特征研究 |
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| 引用本文： | 曹全,江洪,曾波,余树全,王彬,蒋馥蔚.孑遗植物银杏（Ginkgo bilobaL．）雌雄株水分生理特征研究[J].农业科学与技术,2009,10(3):76-80. |
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| 作者姓名： | 曹全 江洪 曾波 余树全 王彬 蒋馥蔚 |
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| 作者单位： | 曹全,曾波,蒋馥蔚,CAO Quan,ZENG Bo,JIANG Fu-wei(西南大学生命科学学院,三峡库区生态环境教育部重点实验室,重庆,400715);江洪,JIANG Hong(西南大学生命科学学院,三峡库区生态环境教育部重点实验室,重庆,400715;南京大学国际地球系统科学研究所,江苏南京,210093;浙江林学院国际生态中心,浙江杭州,311300);余树全,王彬,YU Shu-quan,WANG Bin(浙江林学院国际生态中心,浙江杭州,311300) |
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| 基金项目： | 国家重点基础研究发展规划(973计划)，国家自然科学基金，科技部数据共享平台建设项目 |
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| 摘 要： | 1材料与方法1．1生境及其自然环境试验地位于四川盆地西缘的四川省都江堰市灵岩山，为山地。研究地点地处31°01’N，103°36＇E，气候属中亚热带湿润气候区，年均温为12．5℃。1月平均气温4．6℃，7月平均气温24．7℃。降水充沛，年均降雨量为1200-1800mm，云雾多、日照少，年均日照时数900h，年均相对湿度为75％-80％。
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| 关 键 词： | 孑遗植物 银杏 雌雄株 水分 生理 |
Preliminary Study on Water Physiological Characters of Male and Female Ginkgo biloba L. |
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| CAO Quan,JIANG Hong,ZENG Bo,YU Shu-quan,WANG Bin,JIANG Fu-wei.Preliminary Study on Water Physiological Characters of Male and Female Ginkgo biloba L.[J].Agricultural Science ＆ Technology,2009,10(3):76-80. |
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| Authors: | CAO Quan JIANG Hong ZENG Bo YU Shu-quan WANG Bin JIANG Fu-wei |
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| Institution: | 1. Key laboratory of Eco-environments in Three gorges Reservoir Region of Ministry of Education, School of Life Science of Southwest University, Chongqing 400715; 2. International Institute of Earth System Science, Nanjing University, Nanjing 210093; 3. International Ecological Center of Zhejiang Forestry College, Hangzhou 311300) |
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| Abstract: | Objective] The experiment aimed to study the difference of water physiology of male and female Ginkgo biloba L. for discussing the strategy of water utilization as well as the important role of this difference during evolution process. Method] The stem sap flow, stomatal conductance(Gs), transpiration rate(Tr) and water use efficiency (WUE) of male and female Ginkgo biloba L. were comparatively studied. Result] The day-night processes of flow on male and female Ginkgo biloba L. were similar. The flow on male and female Ginkgo biloba L. in day were almost same while the flow at night on male Ginkgo biloba L. was bigger than that on female Ginkgo biloba L. The Tr and Gs of male and female Ginkgo biloba L. were high in morning and at night but low at noon ,while Tr and Gs of female Ginkgo biloba L. in morning and at night were higher than these of male Ginkgo biloba L. at the same time point. However, these indexes of female plant were lower than these of male plant from 11:00 to 14:00. WUE changing trends of male and female Ginkgo biloba L. were similar, while average water utilization rate of female Ginkgo biloba L. was slightly lower than that of male Ginkgo biloba L. Conclusion] Compared with other companion plants, water physiology of male and female Ginkgo biloba L. had strong homoplasy. The phenomenon might be a survival strategy of dioecious plants under long term evolutionary pressure. |
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| Keywords: | Ginkgo biloba L Male and female plants Water physiology |
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