| Comprehensive evaluation of effect of brassonolide on drought resistance of seedlings of three tree species |
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| DOI：10.7606/j.issn.1000-7601.2007.02.20 |
| Key Words: brassinolide Hippophae rhamnoides L. Prunus armeniaca L.var.ansu Amorpha fruticosa L. drought resistance principal component analysis |
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| Abstract: |
| Twenty indexes for drought-resistance were measured under simulating soil drought by using potted-seedlings to controlling soil water and dipping roots and spraying leaves of seedlings of Hippophae rhamnoides L.,Prunus armeniaca L.var.ansu and Amorpha fruticosa L.with brassinolide of different concentrations.Based on that the effect of brassinlide on drought resistance of seedlings of three tree species was comprehensively evaluated by using principal component analysis.The results showed that with concentration between 0.1～0.3 mg/L the values of effect of brassinolide on drought resistance of seedlings of three tree species were higher than that of untreated.The best brassinolide concentration was 0.2 mg/L for effectually increasing drought resistance of seedling of the three tree species. |