首页 | 本学科首页   官方微博 | 高级检索  
     检索      

地被菊‘火焰’对干旱胁迫的响应研究
引用本文:赵夏陆,任磊,梁丽宝,赵丽君,王金将,王晨,赵靓,吕晋慧,张春来.地被菊‘火焰’对干旱胁迫的响应研究[J].山西农业大学学报(自然科学版),2014,34(5):458-463.
作者姓名:赵夏陆  任磊  梁丽宝  赵丽君  王金将  王晨  赵靓  吕晋慧  张春来
作者单位:1. 山西农业大学林学院,山西太谷,030801
2. 山西省农业科学院高粱研究所山西省高粱工程技术研究中心,山西榆次,030600
基金项目:“十二五”国家科技支撑计划课题
摘    要:为探讨地被菊‘火焰’在干旱胁迫下的响应机制,采用盆栽控水法,研究不同干旱胁迫强度下地被菊‘火焰’生长、生理生化和光合生理的变化。结果表明:(1)干旱胁迫抑制‘火焰’生长发育,其中,中度和重度胁迫对植株生长影响较大。(2)随着干旱胁迫强度加剧,叶片相对含水量(LRWC)降低,叶片脯氨酸(Pro)、可溶性糖(Ss)和可溶性蛋白(Sp)含量增加,丙二醛(MDA)含量、超氧化物歧化酶(SOD)活性和叶绿素(Chl)含量升高。(3)光合速率(Pn)、蒸腾速率(Tr)和气孔导度(Gs)随干旱胁迫程度加大而降低,胞间CO2浓度(Ci)呈先降后升趋势。结果表明土壤含水量为(13.33±0.2)%时对‘火焰’生长影响较小;土壤含水量为(10±0.2)%时,植株生长缓慢;土壤含水量为(6.66±0.2)%时‘火焰’生长明显受到抑制。

关 键 词:地被菊  干旱胁迫  生长  生理  光合生理

Responses to Drought Stress in Ground-covering Chrysanthemum cv'Huoyan'
Institution:Zhao Xialu ,Ren Lei ,Liang Libao ,Zhao Lijun ,Wang Jinjiang ,Wang Chen ,Zhao Jing ,Lv Jinhui, Zhang Chunlai (1. College of Forestry, Shanxi Agricultural University, Taigu Shanxi 030801 , China, 2. Institute for sorghum Research ,Shanxi Academy of Agricultural Sciences/Shanxi Provincial Engineering RD Centre for Sorghum, Yuci Shanxi 030600 ,China)
Abstract:To provide optimized cultivation procedures for ground-covering chrysanthemum,this study investigated the growth and physiological responses of the chrysanthemum plant to drought stress.Using ground-covering chrysanthemum cultivar'Huoyan'as material and pot-cultivation experiment with controlled irrigation,parameters of growth,stress physiology and biochemistry and photosynthetic physiology of'Huoyan'plants under varied degree of drought stress were measured.The results showed that:drought stress inhibited plant growth,especially under moderate and severe drought stress conditions.Under increased degree of drought stress leaf relative water content(LRWC)was decreased,proline(Pro),contents of soluble sugar(Ss)and soluble protein(Sp)were increased,malonic aldehyde(MDA)content,the activity of superoxide dismutase(SOD)and chlorophyll content(Chl)were increased.Under drought stress,photosynthetic rate(Pn),stomatal conductance(Gs)and transpiration rate(Tr)were significantly decreased while intercellular CO2concentration(Ci)was first increased and then decreased.When soil moisture content was 13.33%±0.2%little impact on plant growth was observed.When soil moisture dropped to 10%±0.2%,the plants grew slowly.When soil moisture reached 6.66%±0.2%plant growth was suppressed considerably.
Keywords:Ground-covering chrysanthemum  Drought stress  Plant growth  Physiological response  Photosynthetic physiology
本文献已被 CNKI 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号