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Effect of 5-aminolevulinic acid on yield and quality of lettuce in sunlit greenhouse

机译:5-氨基乙酰丙酸对日光温室莴苣产量和品质的影响

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The role of 5-aminolevulinic acid (ALA) as a precursor of chlorophyll and heme is well documented. Low concentration of exogenous ALA has been found to regulate plant growth and increase crop yield, but there is little information on how ALA influences the yield and quality of lettuce in sunlit greenhouse. Here, we report the effects of ALA on photosynthetic rate, yield and quality of lettuce in sunlit greenhouse.5-aminolevulinic acid and 5-aminolevulinic acid with nitrogen fertilizer (ALA+N) were applied by foliage and soil. The results showed that application of ALA improved the photosynthetic rate of lettuce leaves by 23.9 to 34.7% and by 35.3 to 41.6%. Moreover, exogenous ALA increased vitamin C and soluble sugar content, reduced nitrate and crude fiber content and lead to better quality and taste of lettuce.
机译:5-氨基乙酰丙酸(ALA)作为叶绿素和血红素的前体的作用已得到充分证明。已经发现低浓度的外源ALA可以调节植物的生长并增加农作物的产量,但是关于ALA如何影响日光温室中生菜的产量和质量的信息很少。在这里,我们报道了ALA对日光温室光合速率,生菜产量和品质的影响。在土壤和土壤上施用了5-氨基乙酰丙酸和5-氨基乙酰丙酸和氮肥(ALA + N)。结果表明,施用ALA可使生菜叶片的光合速率提高23.9%至34.7%,使生菜叶片的光合速率提高35.3%至41.6%。此外,外源ALA增加了维生素C和可溶性糖含量,减少了硝酸盐和粗纤维含量,并提高了莴苣的品质和口味。

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