硝普钠-酸铝互作对米老排幼苗生长响应研究OA

To investigate the mitigating effect of nitric oxide(NO)on the growth inhibition of Mytilaria lao-sensis seedlings under acid-aluminum stress,half-year-old seedlings were used as experimental materials.A two-factor completely randomized block design was employed,with 2 SNP concentrations solution and 5 AlCl3 con-centrations,resulting in 10 treatment groups.Seedling growth indicators were measured,and a comprehensive evaluation was conducted using the subordinate function method.The results showed that in the absence of SNP,the plant height,ground diameter,and leaf area of seedlings significantly decreased with increasing AlCl3 concen-tration.After the application of 0.1mmol/LSNP solution,plant height,ground diameter,leaf area,and total dry weight were significantly increased in all treatment groups.Among the treatments,T4 performed optimally,with plant height,ground diameter,and total dry weight increasing by 37.2％,32.1％,and 38.4％,respectively,com-pared to the control.The seedling quality index(QI)reached 0.369.Subordinate function analysis ranked T4 first in the comprehensive evaluation.In conclusion,0.1mmol/L SNP solution can effectively alleviate aluminum tox-icity and promote the growth of M.laosensis seedlings.