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Effect of different transplanting and harvest times on yield and quality of pigmented rice cultivars in the Yeongnam plain area

  • Kim, Sang-Yeol (Department of Southern Area Crop Science, NICS, RDA) ;
  • Han, Sang-Ik (Department of Southern Area Crop Science, NICS, RDA) ;
  • Oh, Seong-Hwan (Department of Southern Area Crop Science, NICS, RDA) ;
  • Seo, Jong-Ho (Department of Southern Area Crop Science, NICS, RDA) ;
  • Yi, Hwi-Jong (Department of Southern Area Crop Science, NICS, RDA) ;
  • Hwang, Jung-Dong (Department of Southern Area Crop Science, NICS, RDA) ;
  • Choi, Won-Yeong (Department of Southern Area Crop Science, NICS, RDA) ;
  • Oh, Myung-Kyu (Department of Southern Area Crop Science, NICS, RDA)
  • 투고 : 2016.05.31
  • 심사 : 2016.08.12
  • 발행 : 2016.09.30

초록

The effect of transplanting and harvest timing was evaluated for the production of high quality pigmented rice in the Yeongnam plain area. Rice was transplanted on June $2^{nd}$ and $14^{th}$ and harvested between 35 - 55 days after panicle heading at 5 - day intervals. Three black- and 3 red-pigmented rice cultivars (such as early cultivar : Josengheugchal, Jeogjinju; medium cultivar : Heugseol, Hongjinju; and mid-late cultivar : Sintoheugmi, Geongganghongmi) were studied. Yield components like spikelet number, ripened grain ratio, and 1,000 - grain weight of the black- and red-pigmented rice cultivars were similar for both the June 2 and June 14 transplantings but panicle number per $m^2$ was higher for the June 14 transplanting than for June 2. This contributed to a higher brown rice yield for the June 14 transplanting, by 6 - 19% for black-pigmented rice, and by 10 - 21% for red-pigmented rice than the yield for the June 2 transplanting. Total anthocyanin and polyphenol productions of the pigmented rice were also higher in the June 14 transplanting than that in the June 2 transplanting due to high brown rice yield. Based on the combined pigmented brown rice yield, we concluded that the optimal harvest timing would be 40 - 45 days after panicle heading (DAH) for the black-pigmented rice and 45 - 50 DAH for the red-pigmented rice. This study suggests that optimum transplanting and harvest timings play an important role for production of high quality pigmented rice in the Yeongnam plain area.

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참고문헌

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