Effect of LED Irradiation with Different Red-to-Blue Light Ratios on Growth and Functional Compound Accumulations in Spinach (<i>Spinacia oleracea</i> L.) Accessions and Wild Relatives.

ABSTRACT: The utilization of red and blue light-emitting diode (LED) lights for cultivating leafy vegetables in closed plant factories has increased in recent years. This study examined the growth and biosynthesis of functional compounds in twelve Spinacia accessions, including cultivars and wild relatives, under the irradiation of fluorescent light and three different red-to-blue LED light combinations (red:blue = 1:1, 1:3, and 3:1). Results showed that, except for the three examined Japanese cultivars, the fresh weight of most spinach accessions increased when red light comprised 50-75% of the light's spectral composition. This indicated the vital role of the red-light photoreceptor phytochrome in inducing plant growth. The contribution of blue-light photoreceptors was also notable. Signifi

SUBMITTER: Le TM 

PROVIDER: S-EPMC11902216 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature