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通过盆栽试验,研究了外源氯化钙(CaCl2)、水杨酸(SA)和NO供体硝普钠(SNP)处理对干旱胁迫下石蒜抗旱性的影响。结果表明,较低浓度的CaCl2对石蒜抗旱性的影响不显著,而随着CaCl2预处理浓度的提高,石蒜的抗旱效果显著增强。较低浓度SA和SNP可显著提高石蒜的抗旱性,而高浓度则会发生毒害作用。利用模糊隶属函数法综合评价渗透调节物质、膜系统和抗氧化酶活性多项指标可以得出,喷施10mmol·L-1CaCl2、2mmol·L-1SA和0.5mmol·L-1SNP对石蒜抗旱性的提高具有显著效果。
Pot experiments were conducted to study the effects of exogenous CaCl2, SA and SNP on the drought resistance of Lycoris radiata under drought stress. The results showed that the lower concentration of CaCl2 had no significant effect on the drought resistance of Lycoris radiata, but with the increase of CaCl2 pretreatment concentration, the drought resistance of Lycoris radiate was significantly enhanced. Lower concentration of SA and SNP can significantly increase the drought resistance of Lycoris radiata, while the high concentration will occur toxic effects. Using the fuzzy membership function method to comprehensively evaluate the indexes of osmotic adjustment substances, membrane system and antioxidant enzyme activity, it can be concluded that spraying 10 mmol·L-1 CaCl2, 2 mmol·L-1 SA and 0.5 mmol·L-1 SNP on the drought resistance of Lycoris radiate The improvement has a significant effect.