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当前位置: 首页 > 文章 > 4个海滨雀稗对低温胁迫的生理响应及抗寒性比较 草地学报 2018 (6) 1444-1448
Position: Home > Articles > Comparison of Physiological Response and Resistances of Four Paspalum vaginatum to Low Temperature Stress Acta Agrestia Sinica 2018 (6) 1444-1448

4个海滨雀稗对低温胁迫的生理响应及抗寒性比较

作  者：
李静思;黄宁;麻加欣;孙铜;贾子硕;张钿;王雅娇;孙鑫博
单  位：
河北农业大学河北省作物生长调控重点实验室;河北农业大学
关键词：
低温胁迫;海滨雀稗;抗氧化酶;活性氧
摘  要：
为比较不同品种海滨雀稗的抗寒性,以4个品种的海滨雀稗为供试材料,探讨低温胁迫(4°C)对海滨雀稗的生理影响,并对4个品种的海滨雀稗的抗寒性进行了比较。结果表明低温胁迫能够使海滨雀稗的叶绿素含量增加,处理28d后,PL和Sa的叶绿素含量最高。低温胁迫能够使海滨雀稗的相对电导率和MDA含量增加,在处理第28d时,Sa的相对电导率和MDA含量显著低于其他品种。海滨雀稗的H_2O_2和O_2~-含量随着低温处理而增加,处理28d后4个品种间的O_2~-含量没有显著差异,PL和SP品种的H_2O_2含量显著低于其他两个品种。低温使海滨雀稗的SOD活性呈现先升后降,然后再升高的趋势,处理后第28d,4个品种间没有显著差异;低温胁迫能够使海滨雀稗的POD活性升高,但品种间没有显著差异;低温可以降低海滨雀稗CAT和APX的活性,其中CAT活性4个品种之间没有显著差异,而SI品种的APX活性显著高于其他品种。综合各项生理指标,Sa品种的抗寒性较好。
译  名：
Comparison of Physiological Response and Resistances of Four Paspalum vaginatum to Low Temperature Stress
作  者：
LI Jing-si;HUANG Ning;MA Jia-xin;SUN Tong;JIA Zi-shuo;ZHANG Tian;WANG Ya-jiao;SUN Xin-bo;Key Laboratory of Crop Growth Regulation of Hebei Province,Hebei Agricultural University;Journal Publishing Department of Hebei Agricultural University;
单  位：
LI Jing-si%HUANG Ning%MA Jia-xin%SUN Tong%JIA Zi-shuo%ZHANG Tian%WANG Ya-jiao%SUN Xin-bo%Key Laboratory of Crop Growth Regulation of Hebei Province,Hebei Agricultural University%Journal Publishing Department of Hebei Agricultural University
关键词：
Low temperature stress;;Paspalum vaginatum;;Antioxidant enzyme;;Reactive oxygen species
摘  要：
Four Paspalum vaginatumcultivars were used in this study to investigate the effect of low temperature stress on Paspalum vaginatum physiological response,and then we evaluate the cold resistance of these four cultivars.The results showed that the leaf chlorophyll content increased with the time of chilling treatment and PL,Sa had higher chlorophyll content than other two cultivars.Relative electrolyte leakage,MDA content increased under low temperature condition.After 28 dof treatment,relative electrolyte leakage and MDA content in Sa cultivar are significant lower than that in other three cultivars,respectively.H_2O_2 and O_2~- content increased under low temperature stress.No significant difference of O_2~- was found between four cultivars,whereas PL and SP had significantly lower H_2O_2 content compare with other two cultivars.SOD activity of all cultivars tends to remain consistent first increase,second decrease and then increase.POD activity increased in all cultivars under low temperature condition.CAT and APX activities were decreased in all cultivars under low temperature condition.No significant difference of CAT activity was found between four cultivars whereas APX activity in SI cultivars was significantly higher than that in other three cultivars.Taken together,Sa has better cold resistance than the other three cultivars.

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