[1]刘翔,高润梅,党裳霓,等.干旱胁迫下穿龙薯蓣叶片的生理响应[J].北方园艺,2020,44(14):110-117.[doi:10.11937/bfyy.20193640]
　LIU Xiang,GAO Runmei,DANG Shangni,et al.Physiological Response of Leaves of Dioscorea nipponica Under Drought Stress[J].Northern Horticulture,2020,44(14):110-117.[doi:10.11937/bfyy.20193640]
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干旱胁迫下穿龙薯蓣叶片的生理响应

《北方园艺》[ISSN:1001-0009/CN:23-1247/S] 卷: 第44卷 期数: 2020年14 页码: 110-117 栏目: 出版日期: 2020-07-30
Title:
Physiological Response of Leaves of Dioscorea nipponica Under Drought Stress
作者:
刘翔; 高润梅; 党裳霓; 李进
（山西农业大学 林学院，山西 太谷 030801）
Author(s):
LIU Xiang; GAO Runmei; DANG Shangni; LI Jin
(College of Forestry,Shanxi Agricultural University，Taigu，Shanxi 030801)
关键词:
穿龙薯蓣; 干旱胁迫; 生理特性
Keywords:
Dioscorea nipponica; drought stress; physiological characteristics
DOI:
10.11937/bfyy.20193640
文献标志码:
A
摘要:
土壤干旱对药用植物穿龙薯蓣植株生长的影响研究是筛选该种优异种质的重要内容。该研究采用蟒河和关帝山种源穿龙薯蓣为试材，通过大田控制浇水的方法，研究了干旱胁迫对蟒河和关帝山种源穿龙薯蓣叶片生理特性的影响，以期揭示该种质对未来区域气候变化的耐受性及其生理机制。结果表明：随干旱胁迫加剧，穿龙薯蓣的超氧化物歧化酶（SOD）活性呈先升后降再升的趋势，丙二醛（MDA)、脯氨酸（Pro）、可溶性糖（SS）含量均呈先升后降趋势，可溶性蛋白质（SP）含量呈下降趋势。不同种源对干旱胁迫的响应存在差异：蟒河种源以较强的渗透调节能力应对土壤干旱；关帝山种源的保护酶防御体系和渗透调节系统都相对较强，抗旱性强于蟒河种源。该研究可为穿龙薯蓣的大田种植管理和良种选育工作提供理论支撑。
Abstract:
The effects of soil drought on the growth of medicinal plants，Dioscorea nipponica was an important part of screening this kind of excellent germplasm.In this study，the Dioscorea nipponicas from Manghe and Guandishan provenance were used as the test materials.Through the method of watering controlled in the field，the effects of drought stress on the physiological characteristics of the leaves of Dioscorea nipponica provenance in Manghe and Guandishan were studied.The purpose was to reveal the germplasms′ tolerance to future regional climate change and its physiological mechanism.The results showed that with the increased of drought stress，the SOD activity of Dioscorea nipponica showed a trend of rising-lowing-rising.The contents of MDA，Pro and SS increased first and then decreased，and SP content decreased.The response of different provenances to drought stress were different,the Manghe provenance had strong osmotic adjustment ability to cope with soil drought；the protective enzyme defense system and osmotic adjustment system of Guandishan provenance were relatively strong，and drought resistance was stronger than Manghe provenance.This study could provide theoretical support for the Dioscorea nipponica planting management and improved breeding.

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备注/Memo

第一作者简介：刘翔（1994-），男，山西临汾人，硕士研究生，研究方向为干旱与植物生理生态。E-mail:1315468096@qq.com.责任作者：高润梅（1974-），女，山西繁峙人，博士，教授，博士生导师，现主要从事植物多样性保护等研究工作。E-mail:sxndgrm@163.com.基金项目：山西省林业科技创新资助项目(林业重点研发计划专项)（LYCX201961）。收稿日期：2019-12-03

更新日期/Last Update: 2020-09-15