Responses of Gardenia jasminoides Ellis Leaf Traits and Anatomical Structures to Drought Stress in Purple Soil  

作　　者：Yan YANG Lei LI Jie TANG Yuxi TANG Yongjin LI Mengrong LUO 

机构地区：[1]Hunan Academy of Forestry,Changsha 414004,China

出　　处：《Agricultural Biotechnology》2021年第5期93-97,共5页农业生物技术（英文版）

基　　金：Hunan Forestry Science and Technology Innovation Project(XLK201971);Changsha Science and Technology Program(kq1801028).

摘　　要：[Objectives]This study was conducted to investigate the response of Gardenia to purple soil drought stress,hoping to provide a reference for the selection of plants for vegetation restoration in purple soil regions.[Methods]The pot-weighing water control method was used to apply different degrees of drought stress to Gardenia seedlings in purple soil,and the effects of drought stress on the electrical conductivity,chlorophyll content,leaf morphology and structure of Gardenia leaves were explored.[Results]The leaf electrical conductivity increased with the increase of drought stress intensity,and the leaf electrical conductivity under severe drought stress increased by 59.93%compared with the control;the chlorophyll content of Gardenia showed a single-peak changing trend that increased and then decreased with the development of drought stress,and it was the highest in each stress stage under severe drought stress;the leaf thickness,palisade tissue thickness and sponge tissue thickness of Gardenia were reduced with the stress degree increasing,and showed the largest decreases under severe stress;the stomatal length,stomatal width and stomatal opening of Gardenia gradually decreased with the increase of stress,while the stomatal density gradually increased.[Conclusions]This study provides a technical and resource basis for vegetation restoration in purple soil.

关 键 词：Purple soil Drought stress Gardenia jasminoides Ellis Anatomical structure Leaf traits 

分 类 号：S567.19[农业科学—中草药栽培]