Journal of The Korean Society of Grassland and Forage Science (한국초지조사료학회지)

The Korean Society of Grassland and Forage Science (한국초지조사료학회)
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A New Single Cross Maize Hybrid for Grain and Silage, 'Pyeongangok'

내도복 다수성 종실 및 사일리지 옥수수 신품종 '평강옥'

  • Received : 2012.07.24
  • Accepted : 2012.08.27
  • Published : 2012.09.30
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Abstract

Pyeongangok, a new single cross variety, is an yellow dent maize hybrid (Zea mays L.) developed by the maize breeding team at the National Institute of Crop Science (NICS), RDA in 2011. This hybrid, which has a high yield of grain and dry matter, was produced by crossing two inbred lines, KS160 and KS155. KS160 is the seed parent and KS155 is the pollen parent of Pyeongangok. Silking date of Pyeongangok is 2 days earlier than that of check hybrid, Jangdaok, and equal to that of another check hybrid, Kwangpyeongok. Plant height of Pyeongangok is longer than that of Jangdaok and similar to that of Kwangpyeongok. Ear numbers per 100 plants of Pyeongangok is more than that of Jangdaok. Ear length of Pyeongangok is shorter than that of Jangdaok. 100 seeds weight of Pyeongangok is lighter than that of Jangdaok. Ear rate of Pyeongangok is lower than that of Kwangpyeongok. Stay-green of Pyeonganok is not greatly different with that of Kwangpyeongok. It has moderately resistance to southern corn leaf blight (Bipolaris maydis), black streaked dwarf virus (BSDV) and corn borer. It has strong resistance to northern corn leaf blight (Exserohilum turcicum). It has resistance to lodging. Pyeongangok was evaluated for the yields of grain and dry matter at four locations from 2009 to 2011. The yield of Pyeongangok in grain was 7.66 ton/ha. The yield of Pyeongangok in dry matter was 19.80 ton/ha. The yield of Pyeongangok in total digestible nutrient (TDN) was 13.32 ton/ha. Seed production of Pyeongangok has gone well due to a good match during crossing between the seed parent, KS160, and the pollen parent, KS155, in Yeongwol.

평강옥은 자식계통 KS160과 KS155의 교잡으로 육성된 다수성인 단교잡종이다. 2007~2008년 생산력검정시험을 거쳐, 2009~2011년 3년 동안 4지역에서 지역적응시험을 실시한 결과 그 우수성이 인정되어 2011 농작물 직무육성 신품종선정위원회에서 신규 우량품종으로 결정되었다. 이 품종의 주요특성을 요약하면 다음과 같다. 평강옥의 종피색은 황색이며 입질은 마치종이다. 출사일수는 종실용 옥수수 대비품종인 장다옥 보다 2일 빠르며 사일리지용 옥수수 대비품종인 광평옥과 같다. 간장은 장다옥 보다 길며 광평옥과 비슷하였다. 100주당 이삭수는 장다옥 보다 많았다. 이삭길이는 장다옥과 비슷하였으며, 100립 중은 장다옥 보다 가벼웠다. 이삭비율은 광평옥 보다 낮았다. 후기녹체성은 광평옥과 비슷하였다. 깨씨무늬병, 흑조위축병 및 조명나방에 중정도의 저항성을 보이며, 그을음무늬병에는 강한 편이다. 도복에는 광평옥과 비슷한 정도로 강하였다. 종실수량은 7.66톤/ha로 장다옥 보다 많았고, 건물수량은 19.80톤/ha로 광평옥과 비슷하였다. TDN 수량은 13.32톤/ha로 광평옥과 비슷하였다. 4 1 (모본 : 부본) 재식비율에서 동시 파종하여 채종한 결과 모본의 출사기와 부본의 화분비산기간이 잘 일치하였다.

Keywords

References

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