Effects of NO on growth characteristics of Aquilaria sinensis seedlings under acid-aluminum stress
Using potted plants completely random design,the effect of NO on the growth of Aquilaria sinensis seedlings under acid-aluminum (Al) stress was studied. The results showed that A. sinensis seedlings,growth indexes such as seedling height,ground diameter,biomass,stem,specific leaf weight,root growth indices displayed a downward trend after rising first. Concentration below 0.4 mmol/L aluminum solution for Aquilaria sinensis seedling growth had a certain role in promoting,with aluminum concentration increasing,the seedling growth of trees was inhibited. Comprehensive analysis showed that the promotion effect of 0.2 mmol / L of Al was most obvious. When the concentration of aluminum increased to more than 0.4 mmol/L,there was a significant inhibitory effect on A. sinensis seedlings growth,the effect of 0.8 mmol/L aluminum solution was the worst. The addition of 0.1 mmol/L SNP could alleviate the effect of aluminum stress on the inhibition of seedling growth. The results showed that the growth of treatment 7 (0.2 mmol / L Al,0.1 mmol / L SNP) was the best,plant height,diameter,biomass were 0.69 m,0.48 cm,39.00 g,the total root length,root mean diameter,root surface area,root total volume and root tip number of root system were 3 750 mm,0.805 cm,800 mm2,12.8 cm3and 6 000. While treatment 5 (0.8 mmol / L Al,0 mmol / L SNP) obtained the minimum,the plant height,diameter and biomass were 0.28 m,0.18 cm and 26.30 g, respectively,the root indexes were 1 380 mm,0.570 cm,320 mm2and 6.00 cm3,2 550.
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万方数据
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