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为探究玉米的抗逆性,以玉米品种龙作2号为材料,采用生理指标检测的方法,通过比较叶绿素、丙二醛和脯氨酸等指标的变化,研究外源肌醇对盐胁迫下玉米幼苗耐盐性的影响。结果表明:盐胁迫24、48h时,T3组(NaCl+肌醇)的叶绿素含量与T2组(NaCl)的相比分别上升了10.32%、29.29%,差异达到显著水平(P<0.05);盐胁迫48、72h时,T3组的丙二醛含量与T2组相比分别下降了21.21%、38.84%,差异达到显著水平(P<0.05);盐胁迫24、48、72h时,T3组的脯氨酸含量与T2组相比分别下降了25.00%、47.46%、35.10%,差异均达到显著水平(P<0.05)。说明:施加外源肌醇能够提高玉米幼苗叶绿素含量,降低丙二醛、脯氨酸含量,增强幼苗对盐渍环境的抵抗能力,缓解盐害。
In order to explore the stress resistance of maize, the maize cultivar Longzuo No.2 was used as the material, and physiological indicators were used to detect the changes of chlorophyll, malondialdehyde and proline and other exogenous inositol under salt stress Effect of Salt Tolerance in Maize Seedlings. The results showed that the chlorophyll content of T3 + (inositol) increased by 10.32% and 29.29%, respectively, at T3 and T4 (P <0.05) At 72 h and 72 h, MDA content in T3 group decreased by 21.21% and 38.84%, respectively, compared with T2 group (P <0.05); at 24, 48 and 72 h after salt stress, Compared with T2 group, the acid content decreased by 25.00%, 47.46% and 35.10%, respectively, with a significant difference (P <0.05). The results showed that the application of exogenous inositol can improve the chlorophyll content of corn seedling, reduce the contents of malondialdehyde and proline, and enhance the resistance of seedlings to saline environment and alleviate salt damage.