摘要
本文以野生药用菊花为研究对象,对其进行中度干旱胁迫处理后,通过观察叶片微结构(气孔密度、长度、蜡质含量)的变化以及生理指标(叶绿素)的变化,探讨了药用野菊的耐旱性。试验结果显示:在处理期内,不同的干旱胁迫处理会导致菊花幼苗叶片气孔、蜡质含量及叶绿素含量的不同变化。重度干旱处理的植株叶片比中度干旱处理的植株叶片气孔长度小、密度大,叶片的蜡质含量高,叶绿素含量更低。这些指标在菊花的实际应用和优良抗旱性品种选育具有一定的借鉴意义。
In this paper, w e took the wild medicinal chrysanthemum as the research object, treated it with moderate drought stress, observed the changes of leaf microstructure（stomatal density, length, wax content） and physiological index（chlorophyll）, and discussed its drought tolerance. Test results show that： in the treatment period, different drought stress treatments resulted in different variations of leaf stomata, wax content and chlorophyll content of chrysanthemum seedlings. Leaves of severe drought-treated plants had less stomatal length and higher density than leaves of those treated with moderate drought. They had higher wax content and lower chlorophyll content. These indicators have some reference value in the practical application of chrysanthemum and breeding of excellent drought-resistant varieties.
作者
刘长命
赵颖
Liu Changming1, Zhao Ying2(1.Shangluo University, Henan Shangluo 726000;2.Extension Center of Agricultural Technology, Henan Shangluo 72600)
出处
《科技广场》
2017年第11期26-29,共4页
Science Mosaic
基金
陕西省科技创新与攻关项目(编号:2016NY-032)
博士启动项目(编号:15SKY026)
关键词
干旱胁迫
野菊
气孔
蜡质含量
叶绿素
Drought Stress
Chrysanthemum
Stoma
Wax Content
Chlorophyll
