Korean Journal of Breeding Science (한국육종학회지)

The Korean Society of Breeding Science (한국육종학회)
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Agronomic Characteristics of A Promising Line Adaptable to Extremely Early Cultivation

벼 극조기 재배 적응 유망계통의 농업적 특성

  • 이종희 (국립식량과학원 기능성 작물부) ;
  • 오성환 (국립식량과학원 기능성 작물부) ;
  • 김상열 (국립식량과학원 기능성 작물부) ;
  • 조준현 (국립식량과학원 기능성 작물부) ;
  • 이지윤 (국립식량과학원 기능성 작물부) ;
  • 여운상 (국립식량과학원 기능성 작물부) ;
  • 송유천 (국립식량과학원 기능성 작물부) ;
  • 최경진 (국립식량과학원 기능성 작물부) ;
  • 박태선 (국립식량과학원 벼맥류부) ;
  • 강항원 (국립식량과학원 기능성 작물부) ;
  • 이학동 (국립식량과학원 기능성 작물부)
  • Received : 2010.09.15
  • Published : 2010.09.30
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Abstract

Recently, peoples are greatly concerned with global temperature change because global warming can be a potential serious effect on agriculture production such as yield reduction and poor grain quality. On the other hand, it can bring some beneficial effects through twice cultivation of rice in temperate region. In order to overcome this situation, we developed extremely early-maturing rice 'Milyang255' which heading date was similar with 'Jinbuolbyeo'. Based on agronomic characteristics of 'Milyang255', it has very short stature as 65 cm of culm length and slightly lower spikelets number per panicle compared with that of 'Jinbuolbyeo'. However, the grain appearance, palatability and other items were better than those of 'Jinbuolbyeo' in panel test of cooked rice. The milled rice yield of 'Milyang255' is 3.94 MT/ha at the early transplanting. Especially, its grain filling rate was higher and faster than Jinbuolbyeo and the head rice ratio in milled rice was also higher. Thus, 'Milyang255' can efficiently reduce the growth duration of rice cultivation and also be useful material for research on twice cultivation of rice in Korea.

벼 2기작 재배의 전기작 재배에서 농업적 특성 및 품질 등을 고려하여 선발한 유망계통 '밀양255호'의 주요 특성을 요약하면 아래와 같다. 1. 극조생 공시계통인 '밀양255호'의 출수기는 7월 3일로 대비품종인 '진부올벼'보다 2일 늦었으며, 간장과 수장은 각각 58.3 cm, 16.0 cm이며, 주당수수와 수당립수는 각각 18.0개 52.5개였다. 수량은 394 kg/10a로 12%정도 증수되었다. 2. '밀양255호'의 현미의 길이, 폭 및 두께는 각각 4.19 mm, 2.64 mm 및 1.91 mm의 단원형이며, 장폭비는 1.59로 '진부올벼' 1.48에 비해 약간 긴 편이었다. 현미 천립중도 21.0 g으로 '진부올벼'에 비해 3.2 g 작았다. 3. '밀양255호'의 단백질 함량과 아밀로스 함량은 '진부올벼'에 비해 유의한 차이가 없었으며, 밥의 윤기는 높고 경도는 낮았다. 4. '밀양255호'는 백미완전미율이 91.2%로 '진부올벼' 62.4% 보다 유의하게 높았고 분상질립율은 3.0%로 낮았으며, 8월 5일경 수확한 시험구에서 등숙율과 백미완전미율이 높았다.

Keywords

References

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