High Quality and High Yielding Rice Variety 'Cheongdam' Adaptable to Direct Seeding

고품질 다수성 직파재배적성 신품종 '청담벼'

  • Received : 2011.10.04
  • Accepted : 2011.11.25
  • Published : 2011.12.30

Abstract

'Cheongdam' is a japonica rice variety developed from a cross between SR19200-HB826-34, a line of good germination ability and shoot emergence at low temperature and Juanbyeo, good quality and direct-seeding adaptable cultivar by the rice breeding team of National Institute of Crop Science, RDA in 2006. This variety has 153 days of total growth duration from seeding to maturity in direct-seeding, and 160 days of growth duration from seeding to maturity in transplanting. This is erect plant type with culm length of 74 cm, thick culm, and green leaves. It has large panicle shape with 126 and 140 spikelets per panicle in direct-seeding and transplanting, respectively. Milled rice is transluscent and medium in grain size of non-glutinous endosperm. This variety is susceptible to leaf and neck blast, bacterial blight, stripe virus disease and brown planthopper. The yield potential of 'Cheongdam' is 5.84 MT/ha at ordinary transplanting culture and 5.62 MT/ha and 5.89 MT/ha at wet direct-seeding and dry direct-seeding cultures, respectively in the local adaptability test for three years. 'Cheongdam' would be adaptable to middle and southern plain of Korea for direct-seeding culture and transplanting rice culture.

'청담'은 중부지방 적응 중생 직파적성 품종을 육성할 목적으로 SR19200-HB826-34와 '주안벼'를 인공교배하여 2003년에 SR22320-3-4-1-2-1을 '수원498호'로 계통명을 2004년부터 2006년까지 3년간 지역적응시험을 실시한 결과, 그 우수성이 인정되어 2006년 12월 직무육성 신품종 선정위원회에서 국가목록등재품종으로 선정됨과 동시에 '청담'으로 명명하였는바, 그 주요 특성을 요약하면 다음과 같다. 1. '청담'의 평균출수기는 직파재배에서 8월 14일경으로 '주안벼'와 같은 중생종이다. 2. 간장이 74 cm정도로 줄기가 굵고 강인하여 도복에 비교적 잘 견딘고 평균 수당립수는 직파에서 126개로 이삭이 큰수중형이다. 3. 도열병, 흰잎마름병, 바이러스병 및 멸구류와 매미충에 대해 약하다. 4. 저온 출아성이 비교적 좋으며 장해형 내냉성은 중강정도이다. 5. '청담'은 현미천립중은 21.1 g인 중립종이고, 도정관련 특성이 우수하며, 특히 백미완전립율이 '주안벼'보다 우수하다. 6. 쌀 수량은 지역적응시험의 담수직파재배에서 5.62 MT/ha, 건답직파에서 5.89 MT/ha로 평균 5.76 MT/ha의 수량성을 보여 '주안벼' 대비 5% 증수되었고, 이앙재배에서 5.84 MT/ha로 '화성벼'보다 8% 증수되었다. 7. '청담'은 중부 및 남부 평야지에 알맞다.

Keywords

References

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