Saleh Roksana, Gunupuru Lokanadha R, Lada Rajasekaran, Nams Vilis, Thomas Raymond H, Abbey Lord
Department of Plant, Food, and Environmental Sciences, Faculty of Agriculture, Dalhousie University, 50 Pictou Road, Bible Hill, NS B2N 5E3, Canada.
Biotron Experimental Climate Change Research Centre, Department of Biology, University of Western Ontario, London, ON N6A 5B7, Canada.
Plants (Basel). 2022 Dec 15;11(24):3546. doi: 10.3390/plants11243546.
Microgreens are immature young plants grown for their health benefits. A study was performed to evaluate the different mixed growing media on growth, chemical composition, and antioxidant activities of four microgreen species: namely, kale ( L. var. ), Swiss chard ( var. ), arugula ( ssp. ), and pak choi ( var. ). The growing media were T1.1 (30% vermicast + 30% sawdust + 10% perlite + 30% PittMoss (PM)); T2.1 (30% vermicast + 20% sawdust + 20% perlite + 30% PM); PM was replaced with mushroom compost in the respective media to form T1.2 and T2.2. Positive control (PC) was Pro-mix BX™ potting medium alone. Root length was the highest in T1.1 while the shoot length, root volume, and yield were highest in T2.2. Chlorophyll and carotenoid contents of Swiss chard grown in T1.1 was the highest, followed by T2.2 and T1.1. Pak choi and kale had the highest sugar and protein contents in T2.2, respectively. Consistently, total phenolics and flavonoids of the microgreens were increased by 1.5-fold in T1.1 and T2.2 compared to PC. Antioxidant enzyme activities were increased in all the four microgreens grown in T1.1 and T2.2. Overall, T2.2 was the most effective growing media to increase microgreens plant growth, yield, and biochemical composition.
微型蔬菜是因其对健康有益而种植的未成熟嫩苗。进行了一项研究，以评估不同混合生长介质对四种微型蔬菜品种（即羽衣甘蓝（L. var.）、瑞士甜菜（var.）、芝麻菜（ssp.）和小白菜（var.））生长、化学成分和抗氧化活性的影响。生长介质为T1.1（30%蚯蚓粪+30%锯末+10%珍珠岩+30%泥炭藓（PM））；T2.1（30%蚯蚓粪+20%锯末+20%珍珠岩+30%PM）；在各自介质中用蘑菇堆肥替代PM以形成T1.2和T2.2。阳性对照（PC）仅为Pro-mix BX™ 盆栽介质。根长在T1.1中最高，而茎长、根体积和产量在T2.2中最高。在T1.1中生长的瑞士甜菜的叶绿素和类胡萝卜素含量最高，其次是T2.2和T1.1。小白菜和羽衣甘蓝在T2.2中分别具有最高的糖和蛋白质含量。一致地，与PC相比，T1.1和T2.2中微型蔬菜的总酚类和黄酮类化合物增加了1.5倍。在T1.1和T2.2中生长的所有四种微型蔬菜的抗氧化酶活性均增加。总体而言，T2.2是增加微型蔬菜植物生长、产量和生化成分的最有效生长介质。
