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以生长初期的斑茅和拔地拉(对照)为试验材料,分别用4 种NaCl 浓度(350,250,150,50 mmol/L )处理,测定在NaCl 胁迫与正常供水条件下植物的根系活力、叶片的叶绿素含量、丙二醛含量、过氧化物酶活性及同工酶谱、超氧化物歧化酶活性、盐胁迫蛋白的变化。结果表明,斑茅在遭受NaCl 胁迫时,通过叶片卷缩、减少叶面积来避免大量失水。在NaCl 胁迫处理条件下,斑茅的根系活力、叶绿素含量呈直线下降,与拔地拉的变化相似,但其下降幅度比拔地拉小;而丙二醛含量呈直线上升,但其上升幅度小于拔地拉;随胁迫处理时间的延长,斑茅和拔地拉的过氧化物酶活性、超氧化物歧化酶活性均出现先升后降趋势,但与拔地拉相比,斑茅的峰值出现较晚,且斑茅还产生了与拔地拉不同的盐胁迫蛋白。
At the initial stage of growth, Radix Puerariae and Radix Notoginseng (control) were used as experimental materials and treated with four NaCl concentrations (350, 250, 150 and 50 mmol / L) respectively to determine the root vigor, chlorophyll Content, malondialdehyde (MDA) content, peroxidase activity and isozymes, superoxide dismutase activity, and salt stress proteins. The results showed that when M. przewalskii was subjected to NaCl stress, large amounts of water loss could be avoided by curling leaves and reducing leaf area. Under NaCl stress, the root activity and chlorophyll content of M. przewalskii decreased linearly, but similar to that of attapulgite, but decreased more slowly than that of attapulgite. However, the content of malondialdehyde increased linearly, but the increase Was lower than that of eradiposition. Peroxidase activity and superoxide dismutase activity of echinochloa crus-galli and eupatorium lanceolata increased first and then decreased with the prolonging of stress treatment time. However, The peak appears later, and the echinacea also produced a different salt stress with pull therapid protein.