PROBLEM TO BE SOLVED: To provide a method for preventing a sugar content from becoming low even if tomato fruit weight becomes large, that is, a method for making the tomato fruit sugar content higher as the tomato fruit weight becomes larger.SOLUTION: The method for making the tomato fruit sugar content higher as the tomato fruit weight becomes larger includes to irradiate a tomato after a light period, with light whose light intensity of red light in a 600-700 nm wavelength region is the strongest.COPYRIGHT: (C)2012,JPO&INPIT【課題】本発明は、トマトの果実重量が大きくなっても糖度が低くならない、すなわち、トマト果実の重量が大きくなるほどトマト果実の糖度を高める方法を提供することを目的とする。【解決手段】トマト果実の重量が大きくなるほど前記トマト果実の糖度を高めるには、トマトに対し、明期終了後、600~700nmの波長域の赤色光の光強度が最も強い光を照射する。【選択図】図7
