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为揭示河竹对长期淹水后恢复正常供水的生理生态响应机制,本研究测定了淹水3个月(TR3)和恢复正常供水3个月(R3)时河竹叶片光合色素、MDA、可溶性蛋白、养分含量和抗氧化酶活性、相对电导率。结果表明,TR3处理时,河竹发生膜脂过氧化,抗氧化系统活性减弱,细胞渗透性增大,渗透调节能力下降,叶片主要养分含量和化学计量比发生明显的适应性调节。与TR3处理相比,R3处理河竹抗氧化系统得到有效的恢复,叶片SOD活性提高了15.58%,相对电导率和MDA含量分别降低了23.64%和43.46%,可溶性蛋白质含量提高了9.58倍,这些指标均恢复到正常生长水平。河竹叶绿体细胞受到的伤害也能得到一定程度的修复,并且叶片主要养分元素含量和化学计量比能完全恢复到正常生长水平,体现出河竹极强的生长恢复能力,可尝试应用于江河湖库消落带的植被恢复。
In order to reveal the physiological and ecological response mechanism of Rhizoma Phyllostachys plantation to resume normal water supply after long-term flooding, the photosynthetic pigment, MDA, soluble protein, Nutrient content and antioxidant enzyme activity, relative conductivity. The results showed that during the treatment of TR3, membrane lipid peroxidation, antioxidant system activity decreased, cell permeability increased, osmotic adjustment ability decreased, leaf main nutrient content and stoichiometry significantly adaptive regulation. Compared with TR3 treatment, R3 treatment could effectively restore the antioxidant system of Rhizoma et Radix. The SOD activity increased by 15.58%, relative conductivity and MDA content decreased by 23.64% and 43.46%, and soluble protein content increased by 9.58 times, respectively. All returned to normal levels of growth. Phyllostachys pubescens chloroplast injury can also be a degree of repair, and the main leaf nutrient element content and stoichiometry can be fully restored to normal growth level, reflecting the strong growth and recovery of hedgehog can try to apply to the river bank Falling vegetation recovered.