College of Horticulture, South China Agricultural University, Guangzhou 510642, China.
Molecules. 2020 Oct 19;25(20):4788. doi: 10.3390/molecules25204788.
Selenium (Se) supplement was combined with different LED light qualities to investigate mutual effects on the growth, nutritional quality, contents of glucosinolates and mineral elements in broccoli sprouts. There were five treatments: CK:1R1B1G, 1R1B1G+Se (100 μmol L NaSeO), 1R1B+Se, 1R2B+Se, 2R1B+Se, 60 μmol m s PPFD, 12 h/12 h (light/dark). Sprouts under a combination of selenium and LED light quality treatment exhibited no remarkable change fresh weight, but had a shorter hypocotyl length, lower moisture content and heavier dry weight, especially with 1R2B+Se treatment. The contents of carotenoid, soluble protein, soluble sugar, vitamin C, total flavonoids, total polyphenol and contents of total glucosinolates and organic Se were dramatically improved through the combination of Se and LED light quality. Moreover, heat map and principal component analysis showed that broccoli sprouts under 1R2B+Se treatment had higher nutritional quality and health-promoting compound contents than other treatments. This suggests that the Se supplement under suitable LED lights might be beneficial to selenium-biofortified broccoli sprout production.
将硒（Se）补充剂与不同的 LED 光质相结合，研究其对西兰花芽生长、营养品质、硫代葡萄糖苷和矿物质元素含量的相互影响。共设 5 个处理：CK：1R1B1G、1R1B1G+Se（100 μmol L NaSeO）、1R1B+Se、1R2B+Se、2R1B+Se，光量子通量密度为 60 μmol m s，光照/黑暗时间为 12 h/12 h。与硒和 LED 光质处理相结合的芽体的鲜重没有明显变化，但下胚轴长度更短，含水量更低，干重更重，特别是 1R2B+Se 处理。类胡萝卜素、可溶性蛋白、可溶性糖、维生素 C、总黄酮、总多酚和总硫代葡萄糖苷及有机硒的含量均通过 Se 和 LED 光质的结合得到显著提高。此外，热图和主成分分析表明，1R2B+Se 处理下的西兰花芽具有更高的营养品质和更多的保健化合物含量，优于其他处理。这表明在适当的 LED 光照下补充硒可能有利于富硒西兰花芽的生产。
