关键词: 观赏草, 抗旱性, 枯叶量, 游离脯氨酸, 电解质外渗率

Abstract: An experiment was conducted with Zebra grass(Miscanthus sinensis'Zebrinus’)and Soft rush(Juncus effusus)under the conditions of drought stress. The result showed that the increase of the percentage of withered leaves, the proline content and REC were slowly in early stage of drought treatment. From the 10th to 15th day, the increase of the percentage of withered leaves, the content of free proline and REC appeared dramatically, respectively. There were significant positive correlations between the percentage of withered leaves and physiological indexes in two ornamental grasses under drought stress. It is indicated that the drought tolerance of Soft rush is better than that of Zebra grass, based on the analysis of growth appearance and physiological characteristics. ReplaceFont('ChDivSummary','选用斑叶芒(Miscanthus sinensis‘Zebrinus’)、灯心草(Juncus effusus)两种观赏草进行为期15d的自然失水胁迫处理。结果表明,干旱胁迫初期,两种观赏草的枯叶率、游离脯氨酸含量和电解质外渗率增加不显著,但自第10天至第15天,两种观赏草的枯叶率、游离脯氨酸含量和电解质外渗率剧增。相关分析表明,干旱胁迫条件下两种观赏草的枯叶率与生理指标均呈极显著正相关。综合评价两种观赏草的耐旱性为:灯心草>斑叶芒。');ReplaceFont('EnDivSummary','An experiment was conducted with Zebra grass(Miscanthus sinensis\'Zebrinus’)and Soft rush(Juncus effusus)under the conditions of drought stress. The result showed that the increase of the percentage of withered leaves, the proline content and REC were slowly in early stage of drought treatment. From the 10th to 15th day, the increase of the percentage of withered leaves, the content of free proline and REC appeared dramatically, respectively. There were significant positive correlations between the percentage of withered leaves and physiological indexes in two ornamental grasses under drought stress. It is indicated that the drought tolerance of Soft rush is better than that of Zebra grass, based on the analysis of growth appearance and physiological characteristics.');if(document.getElementById('ChDivSummary') != null && document.getElementById('ChDivSummary').innerHTML!=""){CutSpan('ChDivSummary',500);DisplaySpanDiv('ChDivSummary');ClearSummaryOnLoad('SummaryLinkChID','SummaryLinkEnID');} if(document.getElementById('EnDivSummary') != null && document.getElementById('EnDivSummary').innerHTML!=""){CutSpan('EnDivSummary',1000);DisplaySpanDiv('EnDivSummary');ClearSummaryOnLoad('SummaryLinkEnID','SummaryLinkChID');}ReplaceChar1('ChDivSummary');ReplaceChar('ChDivSummary');ReplaceChar1('EnDivSummary');ReplaceChar('EnDivSummary');

Key words: Ornamental grass, Drought stress, Percentage of withered leaves, Free p roline, Relativeelectric conductivity (REC)