The effect of light quality and intensity on normal temperature preservation of tomato seedlings under water stress conditions was evaluated. Under severe water stress conditions, the growth rate of tomato seedlings was greatly inhibited, thereby resulting in poor development of the fi rst fl ower buds. The growth of plant height and stem diameter was delayed when the PPFD (photosynthetic photon fl ux density) was less than 20μmolm
-2s
-1, but increased when the light intensity was above 20μmolm
-2s
-1. The tomato seedlinga were grown under a PPFD of 20μmolm
-2s
-1 with LEDs of red to blue light (LED2:1, LED1:1, LED1:2) and gradually decreasing supply of culture fl uid keeping the plants without wilting. As a result, the growth of tomato seedlings was well inhibited under LED1:2.
The LED ratio of ”Red: blue =1:2” and asymptotic process of water stress conditions were effective for the growth
control of the tomato seedlings and the tomato seedlings were able to be stored for 3-4 weeks at normal temperature.
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