CAJ | 학술논문

以城市绿地中使用频度较高、花期较长的葱兰 Zephyranthes candida、鸢尾 Iris tectorum、长春花Catharanthus roseus、香彩雀Angelonia angustifolia 等4种观花地被植物为研究对象，采用聚乙二醇溶液(PEG)模拟干旱胁迫对苗期植株进行处理，分析不同干旱胁迫强度下4种植物生理指标的变化，并对其抗旱性进行综合评价。结果表明，随着干旱胁迫程度的加重，4种植物的叶片相对含水量呈不同程度降低，其中长春花在轻度胁迫下已显著降低；叶片相对电导率、可溶性糖含量、脯氨酸和丙二醛的含量均呈不同程度上升趋势。主成分分析表明，4种植物的抗旱能力强弱为葱兰>鸢尾>香彩雀>长春花。
이성시록지중사용빈도교고、화기교장적총란 Zephyranthes candida、연미 Iris tectorum、장춘화Catharanthus roseus、향채작Angelonia angustifolia 등4충관화지피식물위연구대상，채용취을이순용액(PEG)모의간한협박대묘기식주진행처리，분석불동간한협박강도하4충식물생리지표적변화，병대기항한성진행종합평개。결과표명，수착간한협박정도적가중，4충식물적협편상대함수량정불동정도강저，기중장춘화재경도협박하이현저강저；협편상대전도솔、가용성당함량、포안산화병이철적함량균정불동정도상승추세。주성분분석표명，4충식물적항한능력강약위총란>연미>향채작>장춘화。
In this study, 4 species of parterre flower with high-frequentness usage in urban green land and long blossom, such as Zephyranthes candida, Iris tectorum, Catharanthus roseus, Angelonia angustifolia were used as the materials. Polyethylene glycol (PEG) simulated drought stress treatments were done on seedling plants to analyze changes of physiological indicators, and their drought resistances were evaluated. The results showed that with the stress degree increased, the relative water contents of 4 tested materials were decreased, C. roseus under mild stress had been significantly reduced. The relative electrical conductivity, the contents of soluble sugar, proline and MDA increased in a certain degree. Principal component analysis showed that the drought resistant capability in descending order was as follows, Z. candida>I. tectorum>A. angustifolia>C. roseus.