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

The Korean Society of Grassland and Forage Science (한국초지조사료학회)
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'Dakyeong', Earley-heading, Resistance to Lodging and High-yielding Forage Oats Cultivar

조숙 내도복 다수성 추파용 귀리 품종 '다경'

  • Received : 2018.01.16
  • Accepted : 2018.03.06
  • Published : 2018.03.31
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Abstract

'Dakyeong' (Avena sativa L.), a winter oats for forage use, was developed by the breeding team at National Institute of Crop Science, RDA in 2016. It was derived from a cross between 'CI7505'(IT133304) and 'Swan'(IT197920). Subsequent generations followed by the cross were handled in bulk and pedigree selection programs at Iksan and Jeonju, respectively. After preliminary and advanced yield test for 2 years, 'SO2004009-B-B-10-8-3-9', designated as a line name of 'Gwiri91', were subsequently evaluated for earliness and forage yield during 3 years in four parts such as Jeju (upland), Yesan (upland), Iksan (upland), and Jeonju (paddy), from 2014 to 2016, and finally named as 'Dakyeong'. Cultivar 'Dakyong' has leaves of dark green color, thick diameter culm and long grain of brown color. Over 3 years, the heading date of 'Dakyeong' was about 5 days earlier than that of check cultivar 'Samhan' (April 30 and May 5, respectively), and their average forage dry matter yield harvested at milk-ripe stage was higher 12% ($15.7tone\;ha^{-1}$) than $14.0tone\;ha^{-1}$ of check cultivar. Cultivar 'Dakyeong' was lower than the check cultivar 'Samhan' in terms of the protein content (6.1% and 7.0%, respectively) and total digestible nutrients (62.1%, and 62.5%, respectively), while the TDN yield was more than the check ($7.79tone\;ha^{-1}$ and $7.64tone\;ha^{-1}$, respectively). Fall sowing cropping of 'Dakyeong' is recommended only in areas where average daily minimum mean temperatures in January are higher than $-6^{\circ}C$, and it should not be cultivated in mountain areas, where frost damage is likely to occur.

'다경'은 추위에 강해 충청지역에서도 월동이 가능하면서 수확이 빨라 동계-하계 이모작 재배가 가능한 조숙 다수성 귀리 품종 개발을 목표로 2016년 농촌진흥청 국립식량과학원에서 육성되었다. 잡종은 2004년에 'CI7507(IT133304)'에 '스완(IT197920)'을 인공 교배하여 작성되었으며, 집단 및 계통 선발에 의해 고정계통인 'SO2004009-B-B-10-8-3-9'를 선발하였다. 이 계통은 2012년부터 2013년까지 2년간 생산력검정시험을 실시하였으며, 추파 조사료용 귀리로 우수한 계통으로 판명되어 '귀리91호'로 계통명을 부여하고 지역적응시험에 상정하였다. 지역적응시험은 2014년부터 2016년까지 3년간 제주, 예산, 익산, 전주 등 4개 지역에서 실시하였다. 이 계통은 2016년 9월 신품종으로 선정되었으며, 그 특성은 다음과 같다. 귀리 품종 '다경'은 농록색 잎, 갈색의 종실을 가졌다. 출수기는 전국 평균 4월 30일로 표준품종인 '삼한'보다 5일 빨랐다. '다경'의 내한성은 '삼한'과 대등하였고, 도복에 강하였다. 건물수량은 ha당 평균 15.7톤으로 14톤인 '삼한'에 비해 12 % 많았다. '다경'은 조단백질 함량이 6.1 %, 가소화양분총량(TDN)이 62.1 %로 '삼한'(각각 7.0 %, 62.5 %)에 비해 다소 낮았으나 TDN 수량은 ha당 7.79톤으로 7.64톤인 '삼한'보다 0.15톤 많았다. '다경'의 적응지역은 1월 최저평균기온이 $-6^{\circ}C$ 이상인 지역이면 전국 어느 곳에서나 재배가 가능하며, 특히 월동기온이 다소 낮은 충청지역에서도 답리작 재배를 통한 조사료 다수확이 가능하다.

Keywords

References

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