干旱区生态环境知识资源中心(Arid): 干旱胁迫对高羊茅航天诱变新品系生理特性的影响及综合评价

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	干旱胁迫对高羊茅航天诱变新品系生理特性的影响及综合评价
其他题名	Effects of drought stress on the physiological characteristics of new lines of Festuca arundinaceainduced by spaceflight and their comprehensive evaluation
	李娟; 雷霞; 王小利; 牟琼; 杨春燕; 吴佳海
来源期刊	草业学报
ISSN	1004-5759
出版年	2017
卷号	26 期号:10 页码:87-98
中文摘要	为揭示高羊茅航天诱变新品系对干旱胁迫的响应和适应,培育出耐旱性强的新品种。以高羊茅航天诱变新品系12份及其亲本黔草1号高羊茅和贵州主推品种水城高羊茅为材料,采用盆栽试验,在人工气候室进行干旱胁迫处理,测定可溶性蛋白、超氧化物歧化酶(SOD)、过氧化物酶(POD)、过氧化氢酶(CAT)活性、叶绿素(Chl)生理指标,并应用隶属函数法和灰色关联法对其生理指标及14份高羊茅材料耐旱性进行综合评价。结果表明,可溶性蛋白质随着干旱胁迫程度的增加总体呈上升趋势,SOD、POD、CAT含量随着干旱胁迫程度增加总体呈下降趋势,叶绿素含量随干旱胁迫程度加剧呈下降趋势。5个生理指标在14份材料间均存在显著性差异。利用隶属函数法对14份高羊茅材料进行综合耐旱性评价,SP5-32的平均隶属函数值最大,为0.533,耐旱性顺序为:SP5-32>SP5- 75>水城高羊茅>SP5-60>SP5-94>SP5-97>SP5-89>SP5-71>SP5-7>SP5-85>SP5-42>SP5-5>黔草1号高羊茅>SP5-88。利用灰色关联性分析法得出各耐旱指标与耐旱性的关联序为:POD>可溶性蛋白质>SOD> CAT >Chl,关联度在0.55~0.65之间。因此,SP5-32更加适应干旱地区,干旱胁迫下保护酶活性大小、可溶性蛋白质含量与叶绿素含量对高羊茅材料的耐旱性是大致相同的。
英文摘要	In this study,the ecophysiological characteristics of 14 lines of Festuca arundinacea,including some induced by spaceflight,were studied in a pot experiment.The plants were subjected to drought stress conditions, and physiological and biochemical indices including soluble protein content,chlorophyll(Chl)content, and the activities of superoxide dismutase(SOD),peroxidase(POD),and catalase(CAT)activity were determined. These indexes of the 14 F.arundinacea were used to quantitatively evaluate their drought tolerance. The soluble protein content and Chl content increased,and the activities of SOD,POD,and CAT decreased under drought conditions.The drought resistance of the 14 F.arundinacealines was calculated using the subordinate function,and the lines were ranked,from most drought tolerant to least drought tolerant,as follows: SP5-32>SP5-75>F.arundinacea cv.Shuicheng>SP5-60>SP5-94>SP5-97>SP5-89>SP5-71>SP5-7>SP5-85>SP5-42>SP5-5>F.arundinacea cv.Qiancao No.1>SP5-88.The average subordinate function of SP5-32, the most drought tolerant line,was 0.533.A grey correlative analysis was conducted to determine which indices were most strongly related to drought resistance.The indices were ranked,from strongest correlation with drought resistance to weakest,as follows:POD activity>soluble protein content>SOD activity>catalase activity> Chl content(correlation coefficients,0.55-0.65).Therefore,SP5-32 is more suitable for cultivation in drought-affected areas as its antioxidant enzyme activity,soluble protein content,and chlorophyll content are unaffected by drought stress.
中文关键词	高羊茅 ; 干旱胁迫 ; 航天诱变 ; 生理特性 ; 综合评价
英文关键词	Festuca arundinacea drought stress space mutation physiological characters comprehensive evaluation
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:6091052
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/378902
作者单位	李娟, 贵州省农业科学院草业研究所, 贵阳, 贵州 550006, 中国.; 雷霞, 贵州省农业科学院草业研究所, 贵阳, 贵州 550006, 中国.; 王小利, 贵州省农业科学院草业研究所, 贵阳, 贵州 550006, 中国.; 牟琼, 贵州省农业科学院草业研究所, 贵阳, 贵州 550006, 中国.; 杨春燕, 贵州省农业科学院草业研究所, 贵阳, 贵州 550006, 中国.; 吴佳海, 贵州省农业科学院草业研究所, 贵阳, 贵州 550006, 中国.
推荐引用方式 GB/T 7714	李娟,雷霞,王小利,等. 干旱胁迫对高羊茅航天诱变新品系生理特性的影响及综合评价[J],2017,26(10):87-98.
APA	李娟,雷霞,王小利,牟琼,杨春燕,&吴佳海.(2017).干旱胁迫对高羊茅航天诱变新品系生理特性的影响及综合评价.草业学报,26(10),87-98.
MLA	李娟,et al."干旱胁迫对高羊茅航天诱变新品系生理特性的影响及综合评价".草业学报 26.10(2017):87-98.