YANG Xiaoying,WANG Likai,MA Xiaomei,et al.Effects of Drought Stress on Physiological Characteristics and Leaf Structure of Hydrangea[J].Northern Horticulture,2023,(11):75-80.[doi:10.11937/bfyy.20224379]
干旱胁迫对八仙花生理特性及叶片结构的影响
- Title:
- Effects of Drought Stress on Physiological Characteristics and Leaf Structure of Hydrangea
- Keywords:
- Hydrangea; drought stress; physiological property; leaf structure; subordinate function value method
- 文献标志码:
- A
- 摘要:
- 以八仙花“蓝色恋人” “无尽夏”“蓝蝶”“卡米拉粉” 4个品种八仙花一年生扦插苗为试材，采用自然失水法进行持续干旱胁迫处理0、5、10、15 d，研究干旱胁迫对八仙花叶片解剖结构和生理特性的影响，以期为八仙花在西北地区引种及扩大栽培面积提供参考依据。结果表明：干旱胁迫导致八仙花叶片相对含水量（RWC）降低；过氧化物酶（POD）活性先下降后上升，过氧化氢酶（CAT）活性先上升后下降；丙二醛（MDA）、可溶性糖（SS）含量均随着干旱胁迫程度的加剧而上升。八仙花叶片厚度、上表皮厚度、中脉厚度、栅栏组织厚度、海绵组织厚度以及栅栏组织厚度/海绵组织厚度等指标越大，八仙花耐旱性越强。通过隶属函数法综合评价4个品种的抗旱能力依次为“卡米拉粉”＞“蓝蝶”＞“无尽夏”＞“蓝色恋人”。
- Abstract:
- Four varieties of annual Hydrangea，included ‘Blue Lover’‘Endless Summer’ ‘Blue Butterfly’ and ‘Camilla Powder’，were used as experimental materials,the plants were subjected to continuous drought stress using the natural water loss method for 0，5，10，15 days，the effects of drought stress on the leaf anatomical structure and physiological characteristics of Hydrangea were studied,in order to provide reference for the introduction and expansion of Hydrangea in the northwest region of China.The results showed that drought stress led to a decrease in the RWC of Hydrangea leaves.POD activity decreased first and then increased，while CAT activity increased first and then decreased.MDA content and SS content both increased with the severity of drought stress.The greater the leaf thickness，upper epidermis thickness，media thickness，palisade tissue thickness，sponge tissue thickness，and palisade tissue thickness/sponge tissue thickness ratio，the stronger the drought resistance of Hydrangea.The comprehensive evaluation of drought resistance for the four varieties using the membership function method was as follows,‘Camilla Powder’>‘Blue Butterfly’>‘Endless Summer’>‘Blue Lover’.
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备注/Memo
第一作者简介：杨小英（1986-），女，硕士，讲师，现主要从事观赏植物等研究工作。E-mail：645633771@qq.com.责任作者：张黎（1962-），女，本科，教授，硕士生导师，现主要从事观赏园艺等研究工作。E-mail：zhang_li9988@163.com.基金项目：宁夏回族自治区第二批高校黄大年式教师团队-土木工程教师团队资助项目（宁教师[2022]130号）；银川能源学院科研创新团队-绿色工程材料高效利用研究创新团队资助项目（银能院[2022]233号）；宁夏回族自治区重点研发资助项目（2020BFH03006）。收稿日期：2022-10-28