Horticulture, Environment, and Biotechnology : HEB

Korean Society of Horticultural Science (한국원예학회)
권호 표지

Control of Stretching of Cucumber and Tomato Plug Seedlings Using Supplemental Light

Kim, Il-Seop;Zhang, Chenghao;Kang, Ho-Min;Mackay, Bruce

  • Published : 20081000
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Abstract

This study was initiated to select the most efficient EOD light treatment for the control of stretching of cucumber and tomato plug seedlings in the plant factory using four different EOD light qualities, three light intensities, and four different EOD light irradiation period treatments. Compared with control, R, R LED, and B LED light treatments decreased the plant seedling height 23.8%, 25.1% and 15.6% in cucumber and 14.3%, 15.6% and 8.9% in tomato, respectively; in contrast, FR LED light irradiation increased plant height about 21.9% in cucumber and 15.1% in tomato. The seedlings treated with R and FR LED lights had significantly higher values of compactness than those of other treatments. R and R LED light treatments showed the lower T/R ratio than other treatments in cucumber and tomato. In the irradiation period experiment, 10, 30, 60, and 120 minutes of R irradiation reduced the plant heights about 8.8%, 14.0%, 25.5% and 30.2% in cucumber and 11.4%, 18.0%, 22.5%, and 25% in tomato plant seedling, respectively. As the irradiation period increased, both plant seedlings showed the lowest T/R ratio and the highest compactness. The seedlings treated with 2, 8, and 16 μmol･s-1･m-2 of R light intensities reduced 11.7%, 15.3%, and 22.3% of cucumber seedling heights and 7.8%, 12.4%, and 14.8% of tomato seedling heights after 30 d and 50 d of treatments, respectively. The higher intensity of R light had the shorter lengths of hypocotyls and internodes in both plant seedlings. Lengths of petioles in both plant seedlings were significantly decreased by the EOD R light irradiation. Both plant seedlings treated with 8 μmol･s-1･m-2 of R light intensity had the lowest T/R ratio and the highest compactness.

Keywords

References

  1. Biddington, N.L. 1986. The effects of mechanically-induced stress in plants-A review. Plant Growth Regulation 4: 103-123 https://doi.org/10.1007/BF00025193
  2. Brown, C.S., A.S. Schuerger, and J.C. Sager. 1995. Growth and photomorphogenesis of pepper plants under red light-emitting diodes with supplemental blue or far-red light. J. Amer. Hort. Sci. 120: 808-813
  3. Chi, S.H., K.B. Ann, and J.I. Chang. 1998. Effect of the lighting cycle on the growth of tomato and hot pepper seedlings. J. Kor. Soc. Hort. Sci. 39: 233-237
  4. Choi, J.M., J.W. Ahn, J.H. Ku, and Y.B. Lee. 1997. Effect of medium composition of physical properties of soil and seedling growth of red-pepper in plug system. J. Kor. Soc. Hort. Sci. 38: 618-624
  5. Decoteau, D.R. and H.H. Friend. 1991. Phytochrome-regulated growth of young watermelon plants. J. Amer. Hort. Sci. 116: 512-515
  6. Gilbertz, D.A. 1990. Growth retardant mixing made easy. Greenhouse Grower. 2:66-69
  7. Graham, H.A. and D.R. Decoteau. 1997. Sensitivity of shoots and roots of young watermelon plants to end-of-day red and far-red light. J. Amer. Soc. Hort. Sci. 122: 481-484
  8. Hunt, P.G., M.J. Kasperbauer, and T.A. Matheny. 1989. Soybean seedling growth responses to light reflected from different colored soil surfaces. Crop Sci. 29: 130-133 https://doi.org/10.2135/cropsci1989.0011183X002900010030x
  9. Kasperbauer, M.J. and D.L. Karlen. 1986. Light-mediated bioregulation of tillering and photosynthate partitioning in wheat. Plant Physiol. 66: 159-163 https://doi.org/10.1111/j.1399-3054.1986.tb01250.x
  10. Kubota, S., T. Yamato, T. Hisamatsu, S. Esaki, R. Oi, M.S. Roh, and M. Koshioka. 2000. Effects of red- and far-red-rich spectral treatments and diural temperature alternation on the growth and development of Petunia. J. Japan. Soc. Hort. Sci. 69: 403-409 https://doi.org/10.2503/jjshs.69.403
  11. Latimer, J.G. and P.A. Thomas. 1991. Application of brushing for growth control of tomato transplants in a commercial setting. HortTechnology 1: 109-110
  12. Lee, G. 2001. Development of light-treatment technology for producing tomato transplants of high quality - Effects of end-of-day light treatment affecting on the quality of tomato transplants. J. Bio-Environ. Control 10: 55-60
  13. Lieberth, J.A. 1990. Set the stage for quality plugs. Greenhouse Grower 1: 26-27
  14. Lim, K.B., K.C. Son, J.D. Chung, and J.K. Kim. 1997. Influences of difference between day and night temperatures (DIF) on growth and development of bell pepper plants before and after transplanting. J. Bio. Fac. Env. 6: 15-25
  15. Lou, H. and T. Kato. 1988. The physiological study on the quality of seedlings in eggplant: Effects of daylength and light intensity. J. Jpn. Soc. Environ. Control in Biol. 26: 69-78 https://doi.org/10.2525/ecb1963.26.69
  16. Park, H.Y., K.C. Son, E.G. Gu, K.B. Kim, and B.H. Kim. 1996. Effect of different day and night temperature regimes on the growth of hot pepper plug seedlings. J. Kor. Soc. Hort. Sci. 37: 617-621
  17. Runkle, E.S. and R.D. Heins. 2001. Specific functions of red, far red, and blue light in flowering and stem extension of long-day plants. J. Amer. Soc. Hort. Sci. 126: 275-282
  18. Shin, K.H. and W.S. Kim. 1997. Effect of irrigation method on the quality and growth of vegetable plug seedlings. J. Kor. Soc. Hort. Sci. 15: 399-400
  19. Son, K.C. and M.I. Lee. 1998. Effects of DIF and temperature drop/rise on the stem elongation of plug seedlings of Salvia splendens. J. Kor. Soc. Hort. Sci. 39: 615-620
  20. Taiz, L. and E. Zeiger. 1998. Plant physiology. p. 483-516. Sinaure Associates, Inc., Sunderland, MA, USA
  21. Zhang, C., I.J. Chun, Y.C. Park, and I.S. Kim. 2003. Effects of timings and light intensities of supplemental red light on the growth characteristics of cucumber and tomato plug seedlings. J. Bio-Environ. Control 12: 173-179