CAJ | 학술논문

为了明确金钻蔓绿绒对高温环境的忍耐能力，以3～5个叶片的金钻蔓绿绒扦插苗为试材，以室温为对照，研究了高温（35、40和45℃）胁迫不同时间（8、16、24、32和40 h）对金钻蔓绿绒叶片相对电导率和丙二醛含量的影响。结果表明：叶片相对电导率随胁迫温度的升高而逐渐降低、随胁迫时间的延长而逐渐上升，其中35℃所有胁迫处理的叶片相对电导率均显著＞其 CK，胁迫温度升高后叶片相对电导率反而显著下降甚至与其 CK 差异不显著，说明高温胁迫导致叶片细胞膜受害程度加深，温度过高时细胞甚至解体而失去活性；丙二醛含量随胁迫温度的升高和胁迫时间的延长均持续增加，除35℃胁迫8 h 处理的叶片丙二醛含量显著＜其 CK 外，其他高温处理的丙二醛含量均显著＞其 CK。植物所处的环境温度越高、时间越长，其叶片细胞受到的生理伤害就明显越重，综合分析高温胁迫对叶片相对电导率和丙二醛含量的影响，认为金钻蔓绿绒可以勉强忍耐35℃高温8 h。
위료명학금찬만록융대고온배경적인내능력，이3～5개협편적금찬만록융천삽묘위시재，이실온위대조，연구료고온（35、40화45℃）협박불동시간（8、16、24、32화40 h）대금찬만록융협편상대전도솔화병이철함량적영향。결과표명：협편상대전도솔수협박온도적승고이축점강저、수협박시간적연장이축점상승，기중35℃소유협박처리적협편상대전도솔균현저＞기 CK，협박온도승고후협편상대전도솔반이현저하강심지여기 CK 차이불현저，설명고온협박도치협편세포막수해정도가심，온도과고시세포심지해체이실거활성；병이철함량수협박온도적승고화협박시간적연장균지속증가，제35℃협박8 h 처리적협편병이철함량현저＜기 CK 외，기타고온처리적병이철함량균현저＞기 CK。식물소처적배경온도월고、시간월장，기협편세포수도적생리상해취명현월중，종합분석고온협박대협편상대전도솔화병이철함량적영향，인위금찬만록융가이면강인내35℃고온8 h。
In order to clarify the endurance of Diamond philodendron to high temperature environment, using cutting seedlings of Diamond philodendron with 3 -5 blades as the test material, the room temperature as control, the effects of high temperature (35, 40 and 45 ℃) stress at different times (8, 16, 24, 32 and 40 h) on the relative conductivity and MDA content of Diamond philodendron leaves were studied.The results showed that the leaf relative conductivity was decreased gradually with the elevation of stress temperature and increased gradually with prolonging of stress time, the leaf relative conductivity of all stress treatments at 35 ℃ were significantly higher than that of CK, when the stress temperature rises, leaf relative conductivity was significantly decreased or even had no significant differences with CK, it indicated that high temperature stress caused deepen of cell membrane damage degree, when the temperature is too high, cell was disintegrated and lost activity.MDA content was increased with the elevation of stress temperature and prolonging of stress time, MDA content of leaves at 35 ℃8 h was significantly lower than that of CK, and that of other high temperature treatments was remarkably greater than CK.The plant environment temperature is higher, the time is longer, the physiological injury of its leaf cells is significantly more weight. Comprehensive analysis of effects of high temperature stress on leaf relative conductivity and MDA content, it considered that Diamond philodendron could barely endure high temperature of 35 ℃ 8 h.