Yield and Grain Quality of Early Maturing Rice Cultivars as Affected by Early Transplanting in Yeongnam Plain Area

영남 평야지 조생종 벼 조기재배가 수량 및 품질에 미치는 영향

  • Published : 2008.09.30

Abstract

This study was conducted to evaluate an early-maturing rice cultivars adaptable to early transplanting cultivation in Yeongnam plain area. High temperature during the ripening stage of paddy rice under the early-transplanting cultivation in Yeongnam plain was to influence in several agronomic traits such as number of spikelet, ripening ratio, grain appearance of milled rice, and yield. 'Gounbyeo' and 'Junghwabyeo' were better than the others in grain appearance of milled rice and ripening ratio, but their yield potential were lower than that of the other varieties. Moreover, 'Gounbyeo' and 'Junghwabyeo' showed high ratio of broken rice. 'Unkwangbyeo' was the highest in yield and eating quality among the tested varieties, but also high percentage of white core and belly in milled rice. Therefore, in order to recommend those cultivars to farmers, it should be needed to establish an optimal cultivation method, such as transplanting density, fertilizer application, and harvesting time, etc. consequently, it should also be required to develop a new varieties with high ripening capability under high temperature condition.

Keywords

rice;early-transplanting cultivation;grain quality;high temperature

References

  1. Chung, N. J., J. H. Park, K. J Kim, and J. K. Kim. 2005. Effect of head rice ratio on rice palatability. Korean J. Crop Sci. 50(S) : 29-32
  2. 농촌진흥청. 2003. 농업과학기술 연구조사분석기준
  3. Choi, H. C., J. H. Choi, C. S. Lee, Y. B. Kim, and S. Y. Cho. 1994. Varietal and locational variation of grain quality components of rice produced in hilly and high altitude areas in Korea. Korean J. Crop Sci. 39(1) : 27-37
  4. Choung, J. I., K. Y. Kim, Y. H. Choi, Y. D. Kim, M. K. Ou, H. C. Hong, J. K. Kim, and H. G. Hwang. 2004. Analysis of chemical and eating quality character of the early rice variety at cultured in the southern plain area. Korean J. Breed. Sci. 36(1s) : 274-275
  5. Kim, C. S., J. S. Lee, J. Y. Ko, E. S. Yun, U. S. Yeo, J. H. Lee, D. Y. Kwak, M. S. Shin, and B. G. Oh. 2007. Evaluation of optimum rice heading period under recent climatic change in yeongnam area. Korean J. Agricultural and Forest Meterology 9(1) : 17-28 https://doi.org/10.5532/KJAFM.2007.9.1.017
  6. Son, J. R., J. H. Kim, J. I. Lee, Y. H. Youn, J. K. Kim, H. G. Hwang, and H. P. Moon. 2002. Trend and future research of rice quality evaluation. Korean J. Crop Sci. 47(S) : 33-54
  7. Lee, S. H. 2005. Analysis of rice quality and environmental factors based on different agricultural regions in Gyeongbuk province. Ph. D. Thesis Kyungpook National University. 55pp
  8. Yamada, K., N. Iwasawa, T. Matsuda, and Y. Nitta. 2008. Effects of high temperature stress during the early stages of ripening on endosperm structures in rice varieties differed from the appearance rate of cracked grains. Jpn. J. Crop Sci. 77(sup. 1) : 220-221
  9. 농촌진흥청. 2002. 쌀 품질 및 식미평가
  10. Kobata, T., N. Uemuki, T. Inamura, and H. Kagata. 2004. Shortage of assimilate supply to grain increases the proportion of milky white rice kernels under high temperature. Jpn. J. Crop Sci. 73(3) : 315-322 https://doi.org/10.1626/jcs.73.315
  11. 이종훈. 2001. 최신 도작과학. 선진문화사. pp. 183-202
  12. Peng, S., J. Huang, J. E. Sheehy, R. C. Laza, R. M. Visperas, X. Zhong, G. S. Centeno, G. S. Khush, and K. G. Cassman. 2004. Rice yields decline with higher night temperature from global warming. Proceedings of the National Academy of Science of the United states of America 101(27) : 9971-9975
  13. 김동철. 2007. 영동지역 쌀 산업화 특화 전략. 한쌀회총서 23 : 41-78
  14. Yun, S. H. and J. T. Lee. 2001. Climate change impacts on optimum ripening periods of rice and its countermeasure in rice cultivation. Korean Journal of Agricultural and Forest Meteorology 3(1) : 55-70
  15. Nagata, K., T. Takita, S. Yoshinaga, K. Terashima, and A. Fukuda. 2004. Effect of air temperature during the early grain-filling stage on grain filling in rice. Jpn. J. Crop Sci. 73(3) : 336-342 https://doi.org/10.1626/jcs.73.336