草地学报

草地学报 ›› 2014, Vol. 22 ›› Issue (4): 816-821.DOI: 10.11733/j.issn.1007-0435.2014.04.021

• 研究论文 • 上一篇    下一篇

无芒隐子草叶表皮微形态对放牧强度的响应

殷国梅1,2, 张英俊1, 赵艳红3, 张英2   

  1. 1. 中国农业大学, 北京 100193;
    2. 内蒙古自治区农牧业科学院, 内蒙古 呼和浩特 010031;
    3. 内蒙古通辽市科尔沁区农牧业局, 内蒙古 通辽 028000
  • 收稿日期:2013-10-10 修回日期:2013-11-07 出版日期:2014-08-15 发布日期:2014-08-04
  • 通讯作者: 张英俊
  • 作者简介:殷国梅（1973-），女，吉林通化人，博士后，主要从事草地生态及管理研究，E-mail：gmynmg@126.com
  • 基金资助:

    内蒙古自然科学基金项目（2011BS0404）；国家公益性行业（农业）科技专项（200903060）（2014CB138805）（201003061）（201303059）；内蒙古自治区农牧业科学院青年创新基金（2011QNJJM12）资助

Leaf Epidermal Micromorphology of Awnless Cleistogenes at different Grazing Intensities

YIN Guo-mei1,2, ZHANG Ying-jun1, ZHAO Yan-hong3, ZHANG Ying2   

  1. 1. China Agriculture University, Beijing 100093, China;
    2. Inner Mongolia Academy of Agricultural & Animal Husbandry Science, Hohhot, Inner Mongolia 010031, China;
    3. Keerqin Farming and Animal Husbandry Bureau, Tongliao, Inner Mongolia 028000, China
  • Received:2013-10-10 Revised:2013-11-07 Online:2014-08-15 Published:2014-08-04

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摘要：

在内蒙古荒漠草原区对无芒隐子草（Cleistogenes mutica）的叶表皮微形态进行研究，探讨植物微形态对不同放牧强度的响应策略。结果表明：重度放牧条件下叶上表皮纹饰块状凸起、表皮毛数量较其他处理区多，蜡质层较厚；叶下表皮上乳突和表皮毛数量在重度放牧条件下最多；重度放牧条件下气孔深陷于角质层内，下陷深度明显低于其他放牧区和无牧区。重度放牧条件下叶表皮微形态特点能够减少光线辐射和植物的蒸腾或蒸散，减少体内水分的流失。

关键词: 无芒隐子草, 叶表皮, 微形态, 放牧强度, 响应

Abstract:

The leaf epidermal micromorphology of Awnless Cleistogenes (Cleistogenes mutica Keng.) was investigated in a desert steppe of Inner Mongolia to discuss the plant response strategies of micromorphology at different grazing intensities. Results showed that the decorative bulges of upper leaf epidermis and the number of epidermal hairs at heavy grazing intensity condition were more than other treatments, and the wax coat of leaf epidermis was also thicker in this treatment compared to others. The numbers of lower leaf epidermis mastoid and epidermal hairs in the treatment of heavy grazing intensity were significantly more than that in other grazing treatments. It was concluded that the characteristics of leaf epidermis at heavy grazing intensity could reduce light radiation, transpiration and evapotranspiration, further reduce the loss of moisture from plant body.

Key words: Cleistogenes mutica, Leaf epidermal, Micromorphology, Grazing intensity, Response

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