| Effects of exogenous 5-amino levu linic acid on the yield and quality of Leaf-used lettuce at sunlight greenhouse |
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| DOI：10.7606/j.issn.1000-7601.2008.03.27 |
| Key Words: 5－amino levu linic acid leaf-used lettuce photosynthetic characteristics chlorophyll yield |
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| Abstract: |
| The field experiment was carried out at sunlight greenhouse to study the effect of 5－amino levulinic acid （ALA） and5－amino levu linic acid＋N （ALA＋N） on the growth yield and quality of leaf-used lettuce． The results showed that ALA and ALA＋N enh anced the photosynthesis chlorophyll yield of leaf-used lettuce and improved the quality of leaf-used lettuce．ALA and ALA＋N of all the treatments were significantly better than the control（P＜0．01） in the photosynthesis and yield of leaf-used lettuce ALA＋N treatment was the best in all the treatments the photosynthesis and yield of leaf －used lettuce increased by 34．7％ and 41．6％．ALA and ALA＋N improved the content of chlorophyll and quality of leaf-used lettuce there was the most significant increase the content of chlorophyll and quality of leaf-used lettuce compared to the control．The study indicated that the application of ALA and ALA＋N increased the yield and quality of leaf-used lettuce and there was no significant difference among them． |