KOREAN JOURNAL OF CROP SCIENCE (한국작물학회지)

The Korean Society of Crop Science (한국작물학회)
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Seed Germination and Effect of Water Depths on Seedling Establishment of Iron-coated Rice Seeds

벼 철분코팅종자의 발아 특성 및 담수깊이에 따른 초기입모 영향

  • Received : 2016.12.15
  • Accepted : 2017.03.01
  • Published : 2017.03.31
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Abstract

Germination characteristics, seedling emergence, and early seedling growth of iron-coated rice seeds, cultivars Daebo and Samdeokbyeo, under different water depths were compared with those of non-coated seeds (control) and the results evaluated to obtain basic information for establishing stable seedlings in direct water seeding. The total germination percentage of the two seed treatments was similar, but iron-coated seeds had slightly faster germination and shorter mean germination time than non-coated seeds. Water absorption rates of iron-coated seeds were lower than that of non-coated seeds during seed germination. The germination percentage of the two iron-coated rice seed cultivars showed a significant decline of 15-22% after one year of storage under natural conditions. The seedling emergence percentage and uniformity of the two rice cultivars were significantly higher in the iron-coated seeds at 1-13 cm water depths but the percentage of floating seedlings was lower in iron-coated seeds than in non-coated seeds. The iron-coated seeds had a high seedling emergence percentage of 91.3-93.3% at all flooding depths whereas the non-coated seeds had a significantly low seedling emergence percentage of 57.7-71.7% at a water depth of 13 cm. Moreover, the shoot dry weight and seedling health score of iron-coated seeds were significantly higher than those of non-coated seeds, while root dry weights were similar in iron-coated and non-coated seeds, regardless of water depth. These results suggest that iron-coated seeds are more appropriate for stable seedling establishment in direct water seeding than are non-coated seeds.

본 연구는 벼 무논 및 담수직파 시 입모향상을 위해 철분코팅종자와 일반종자에 대한 발아특성 및 담수깊이에 따른 초기 입모영향을 구명한 결과를 요약하면 다음과 같다. 철분코팅종자는 일반종자보다 발아초기에는 발아율이 높았으나 후기에는 일반종자의 발아율과 비슷하였다. 그 결과 철분코팅종자가 일반종자에 비해 발아속도가 빠르고 평균 발아일수가 짧았다. 철분코팅종자를 상온종자창고에 보관시 1년이 지난 후 발아율은 보관당시보다 15.3~21.6% 감소되어 가능한 철분코팅 종자는 1년 이내에 사용하는 것이 바람직하였다. 또한 담수직파조건에서 철분코팅 종자는 일반종자에 비해 깊은 수심에도 출아율이 높고, 뜬묘비율도 낮을 뿐만 아니라 모 충실도가 높아 담수직파 시 철분코팅종자를 사용하는 것이 초기입모를 향상시킬 수 있는 방법이 될 수 있다.

Keywords

References

  1. Choi, B. H. 1993. Seed Biology. Seoul. Hyangmunsa. pp. 152.
  2. Furuhata, M., T. Chosa, O. Matsumura, and T. Yukawa. 2009. Effect of iron-powder coating versus calcium-peroxide coating of seeds on seedling emergence and establishment of rice direct seeded in submerged paddy field. Jpn. J. Crop Sci. 78(2):170-179. https://doi.org/10.1626/jcs.78.170
  3. Han, H. S., Y. H. Choi, K. S. Hwang, S. W. Ro, S. M. Yang, S. J. Park, C. Y. Seong, J. M. Lee, and K. H. Park. 2014. The effect of iron-coated seeds on the germination enhancement of glutinous rice variety. Proceeding of Korean Society of Crop Science Conference. 151pp.
  4. He, D. and P. Yang. 2013. Proteomics of rice seed germination. Frontiers in Plant Science 246(4):1-9.
  5. Kanno, H., H. Shiratsuchi, S. Sasaki, and K. Makihara. 2015. In fluence of the storage duration the seed on germination and seedling establishment in direct seeding with iron coated rice seeds. Tohoku J. Crop Sci. 58:27-28.
  6. Kim, Y. S. 2011. A study on improvement of direct seeded rice with seed coating technology. Ph.D. Thesis in Graduate School of Kongju National University. 108pp.
  7. Kim, J. H., S. T. Park, H. P. Moon, S. S. Lee, and D. W. Lee. 2001. Effect of emergence and seedling growth to seed osmoconditioning and GA treatment in direct seeding on dry paddy. Proceeding of Korean Society of Crop Science Conference pp. 118-119.
  8. Kim, S. Y. and S. T. Park. 2010. Introduction to Direct Seeding Rice Cultivation Technology. Rural Development Administration. 201pp.
  9. Kim, Y. G., K. P. Hong, and W. K. Joung. 2003. Effect of pellet material on seed germination in rice. Proceeding of Annual Report of Gyeongsangnam-do Agricultural Research and Extension Services. pp. 38-42.
  10. Kwak, K. U., J. H. Lee, K. S. Park, H. S. Won, J. H. Kim, and K. H. Park. 2014. The effect of iron-coated seeds on growth and yield of rice in wet hill direct seeding. Proceeding of Korean Society of Crop Science Conference. 78pp.
  11. Lee S. S. and Kim J. H. 1999. Morphological change, sugar content, and $\alpha$-amylase activity of rice seeds under various priming conditions. Korean J. Crop. Sci. 44, 138-142.
  12. Lee S. S. and Kim J. H. 2000. Total sugars, $\alpha$-amylase activity, and germination after priming of normal and aged rice seeds. Korean J. Crop. Sci. 45(2):108-111.
  13. Lee, S. S., J. H. Kim, S. B. Hong, M. K. Kim, and E. H. Park. 1998. Optimum water potential, temperature, and duration for priming of rice seeds. Korean J. Crop Sci. 43(1):1-5.
  14. Min, T. G. and B. M. Seo. 1999. The changes of biochemical and anatomic properties in tobacco(Nicotiana tabacum L.) seeds by priming. Proceeding of Korean Society of Crop Science Conference. pp. 176-177.
  15. Mori, S., H. Fujimoto, S. Watanabe, G. Ishioka, A. Okabe, M. Kamei, and M. Yamauchi. 2012. Physiological performance of iron-coated primed rice seeds under submerged conditions and the stimulation of coleoptile elongation in primed rice seeds under anoxia. Soil Science and Plant Nutrition 58(4):469-478. https://doi.org/10.1080/00380768.2012.708906
  16. Park, K. H. and M. Yamauchi. 2011. Evaluation of direct seeding method for rice using iron coated seeds in Korea. Jpn. J. Crop Sci. 80(supl 1):502-503.
  17. Park, S. T., J. E. Hill, A. C. Chang, and S. K. Lee. 1993. Effects of different water depths on early growth of rice and barnyardgrass(Echinochloa crus-galli). Korean J. Crop Sci. 38(5):405-412.
  18. Shon, J. Y., C. K. Lee, W. H. Yang, Y. H. Yoon, N. J. Chung, C. K. Kim, B. K. Kim, and K. J. Choi. 2013. Effect of water uptake rate on germination characteristics of waxy rice seeds and guaiacol peroxidase activity during early imbibition. Korean J. Crop Sci. 58(4):416-423. https://doi.org/10.7740/kjcs.2013.58.4.416
  19. Won, J. G., C. D. Choi, W. H. Lee, S. C. Lee, C. R. Kim, and B. S. Choi. 1997. Improvement of rice seedling emergence by seed coating materials in direct seeding into flooded paddy soil. Korean J. Crop Sci. 42(3):286-291.
  20. Yamauchi, M. 2002. Reducing floating rice seedling in wet direct sowing by increasing specific gravity of seeds with iron powder coating(In Japanese). Jpn. J. Crop Sci. 71(extra issue 1):150-151.
  21. Yamauchi, M. 2004. Improved anchorage and bird protection with iron-coated seeds in wet direct seeding of rice crops. In Proceeding of the World Rice Research Conference held in Tokyo and Tsukuba, Japan, 4-7 November 2004. pp. 209-211.

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