CAJ | 학술논문

采用逐级降温程序模拟冰冻处理技术测定含笑、乐昌含笑、深山含笑3种含笑属植物离体叶片的相对电导率和可溶性蛋白含量,并用Logistic方程计算其半致死温度（LT50）。结果表明：（1）3种植物的耐低温能力存在着显著差异,随着温度的降低,叶片电导率总体上呈S形曲线变化;采用Logistic方程计算3种植物的耐寒半致死温度（LT50）,得出3种植物的耐寒强弱次序为含笑（–39.2℃）,乐昌含笑（–32.9℃）,深山含笑（–31.0℃）。（2）随着低温处理时间的延长,3种植物叶片蛋白质含量呈现上升趋势。
채용축급강온정서모의빙동처리기술측정함소、악창함소、심산함소3충함소속식물리체협편적상대전도솔화가용성단백함량,병용Logistic방정계산기반치사온도（LT50）。결과표명：（1）3충식물적내저온능력존재착현저차이,수착온도적강저,협편전도솔총체상정S형곡선변화;채용Logistic방정계산3충식물적내한반치사온도（LT50）,득출3충식물적내한강약차서위함소（–39.2℃）,악창함소（–32.9℃）,심산함소（–31.0℃）。（2）수착저온처리시간적연장,3충식물협편단백질함량정현상승추세。
Electric conductivities and Soluble protein content of excised-leaves of 3 plants of Michelia were measured and lethal temperature 50（LT50） were calculated under the simulated freezing treatment.The results as following（1）The low temperature tolerance ability of the 3 species had a significant difference,and the freezing resistance from strong to weak was Michelia figo,Michelia maudiae,Michelia chapensls.The relative electrical conductivity of the 3 species increased gradually as temperature dropped,and showed a S-shape curve generally;LT50 values of the 3 species were –39.2℃,–32.9℃,–31.0℃ which respectively calculated by programs of Logistic equation.（2）With the low-temperature processing of 3 kinds of plant leaves protein content on the rise.