CAJ | 학술논문

为了研究大苞景天 Sedum amplibracteatum K. T. Fu 的耐热性及在不同高温胁迫下的生理特点，采用美国生产的 Licor6400便携式光合仪对大苞景天的荧光参数进行了测定。结果表明：随着高温胁迫程度的慢慢增加，大苞景天叶片出现卷曲、萎蔫、变黄、干枯脱落等症状，部分植物茎基部变软腐烂，反映了其不耐高温的特点。在高温胁迫过程中，大苞景天叶片相对含水量和荧光参数呈下降趋势，电导率呈上升趋势。大苞景天的生理变化和形态特征，表明其不耐高温。
위료연구대포경천 Sedum amplibracteatum K. T. Fu 적내열성급재불동고온협박하적생리특점，채용미국생산적 Licor6400편휴식광합의대대포경천적형광삼수진행료측정。결과표명：수착고온협박정도적만만증가，대포경천협편출현권곡、위언、변황、간고탈락등증상，부분식물경기부변연부란，반영료기불내고온적특점。재고온협박과정중，대포경천협편상대함수량화형광삼수정하강추세，전도솔정상승추세。대포경천적생리변화화형태특정，표명기불내고온。
To study the thermal stability of Sedum amplibracteatum K. T. Fu and physiological characteristics under different high temperature stress, the Licor 6400 portable photosynthetic apparatus produced by U.S.A. was used to determine fluorescence parameters of S. amplibracteatum. The results show that since the degrees of high temperature stress were slowly increased, S. amplibracteatum leaves appeared symptoms of curly, dry, yellow wilting, dried-up and drop, part of the plant stem base were soft and rot, the symptoms reflected that S. amplibracteatum had not temperature withstanding characteristics. In the process of the high temperature stress, the relative water content of leaves and fluorescence parameters of S.amplibracteatum had a descending trend; and the conductivity showed a upward trend. From the physiological change and morphological characteristics, S. amplibracteatum cannot resist high temperature.