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Single Cross Maize Hybrid for Silage with Lodging Tolerance and High Yield, 'Dacheongok'

내도복 다수성 사료용 옥수수 단교잡 신품종 '다청옥'

  • Received : 2018.01.31
  • Accepted : 2018.03.12
  • Published : 2018.06.01

Abstract

'Dacheongok', a new maize $F_1$ hybrid (Zea mays L.), is developed by the maize breeding team at the National Institute of Crop Science (NICS), RDA in 2016. The high-yielding hybrid, named 'Dacheongok' was bred by crossing between two inbred lines, 'KS197' and 'KS202'. It is a yellow dent maize hybrid. After advanced yield trial of 'Dacheongok' in Suwon for one year, regional yield trial was subsequently carried out for evaluation of its growth and yield at four different locations from 2014 to 2016. The days to silking of 'Dacheongok' are 80, similar to 'Kwangpyeongok'. The plant height of 'Dacheongok' is 267 cm, similar to 'Kwangpyeongok', and its ear height ratio is 51%, similar with that of 'Kwangpyeongok'. It has resistance to lodging. The stay-green of 'Dacheongok' is not different with that of 'Kwangpyeongok'. The number of ear per 100 plants of 'Dacheongok' is 95, similar to 'Kwangpyeongok'. The ear length of 'Dacheongok' is 18.6 cm, longer than that of 'Kwangpyeongok'. The weight of 100 seeds of 'Dacheongok' is 29.8 g, similar to that of 'Kwangpyeongok'. It has moderate resistance to southern leaf blight (Bipolaris maydis). It has moderate resistance to European Corn Borer (Ostrinia nubilalis). The dry matter yield (23.69 ton/ha) of 'Dacheongok' was 10% higher than that of 'Kwangpyeongok'. The TDN (Total Digestible Nutrients) yield (16.11 ton/ha) of 'Dacheongok' was 7% higher than that of 'Kwangpyeongok'. The seed production of 'Dacheongok' was acceptable due to a good synchronization of flowering period during crossing between the seed parent, KS197, and the pollen parent, KS202, in Yeongwol and $F_1$ seed yield was 2.46 ton/ha. 'Dacheongok' would be a suitable cultivar to all plain area in Korea. (Variety registration No. 7054).

'다청옥'은 다수성 사일리지 옥수수 품종 개발을 위하여 2009년에 농촌진흥청 국립식량과학원에서 자식계통 KS197과 KS202를 교잡하여 육성한 다수성 1대 교잡품종($F_1$품종)이다. '다청옥'의 종피색은 황색이며 입질은 마치종이다. 2013년 생산력검정시험을 거쳐 2014~2016년까지 3년 동안 수원 등 4지역에서 지역적응시험을 실시하였다. 그 결과 우수성이 인정되어 2016년 농작물 직무육성 신품종으로 결정되었고 '다청옥'으로 명명하였다. '다청옥'의 출사일수는 80일이며 '광평옥'과 비슷하다. 간장은 267 cm로 '광평옥'과 비슷하며 착수고율(51%) 또한 '광평옥'과 비슷하다. 도복은 '광평옥' 정도로 강한 것으로 나타났다. 후기녹체성은 '광평옥'과 비슷하다. 100주당 이삭수는 95개로 '광평옥'과 비슷하며, 이삭길이는 '광평옥'보다 길지만 통계적인 유의성은 없었다. 100립중은 '광평옥'과 비슷하다. 깨씨무늬병은 중간정도의 저항성이며 그을음무늬병에는 강한 저항성이었다. 조명나방 저항성은 중 정도를 보인다. '다청옥'의 건물수량은 ha당 23.69톤으로 '광평옥'보다 10% 많으나 통계적 유의한 차이는 없었다. 또한 '다청옥'의 TDN 수량은 ha당 16.11 톤으로 '광평옥'보다 7% 많으나 통계적 유의한 차이는 없었다. 동시 파종하여 채종시험한 결과 모본 출사기와 부본 화분비산기간이 일치하였으며 채종수량은 ha당 2.46 톤이었다. '다청옥'은 전국적으로 재배가 가능하다.

Keywords

Acknowledgement

Supported by : 농촌진흥청

References

  1. Holland C, Kezar W, Kautz WP, Lazowski EJ, Mahanna WC, Reinhart R. 1990. The Pioneer forage manual : A nutritional guide. Pioneer Hi-Bred Int., Des Moines, IA.
  2. Kim, DA. 1986. Forage crops : its characteristics and cultivation mothed. Sunjinmunhwasa. Seoul. pp. 167-198.
  3. Lee SS, Lee JM. 1987. Productivity of silage corn hybrids in rice black-streaked dwarf virus prevalent region. Journal of the Korean Society of Grassland and Forage Science. 7: 140-145.
  4. Lee SS, Park KY, Park SU, Lee SS. 1988. Population of Laodelphax striatellus, percentage of rice black-streaked dwarf virus (RBSDV) viruliferous vector and RBSDV infection of maize in different locations. Korean Journal of Crop Science. 33: 74-80.
  5. Moon HG, Son BY, Cha SW, Jung TW, Lee YH, Seo JH, Min HK, Choi KJ, Huh CS, Kim SD. 2001. A new single cross hybrid for silage "Kwangpyeongok". Korean J Breed Sci 33: 350-351.
  6. Son BY, Moon HG, Jung TW, Kim SJ, Kim JD. 2006. Comparison of agronomic characteristics, yield and feed value of different corn hybrids for silage. J Kor Crop Sci 51: 233-238.
  7. Statistics Korea. Agriculture, Forestry and Fisheries. 2016. http://lib.mafra.go.kr