Effects of Various Wavelength on the Hardness and the Free Amino Acid Contents of Soybean Sprouts

BACKGROUND: Effect of various light wavelength and plant defense molecules were evaluated on the hardness and the contents of free amino acid including -aminobutyric acid (GABA) in soybean sprouts. METHODS AND RESULTS: Germinating soybean seeds were treated with various single wavelength of light (380, 440, 470, and 660 nm) or without light at for six days. Soybean seeds were also treated with stress-signaling molecule ethephon or at the same...