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

  • 제40권3호
  • /
  • Pages.156-160
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  • 2020
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  • 2287-5824(pISSN)
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  • 2287-5832(eISSN)
한국초지조사료학회 (The Korean Society of Grassland and Forage Science)
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A Medium Maturing Variety of Italian Ryegrass (Lolium multiflorum Lam.), 'IR605', with High Forage Productivity in Southern Region of Korea

  • Kim, Ki-Yong (Grassland and Forage Division, National Institute of Animal Science, Rural Development Administration) ;
  • Lee, Sang-Hoon (Animal Genetic Resources Research Center, National Institute of Animal Science, RDA) ;
  • Choi, Gi Jun (Grassland and Forage Division, National Institute of Animal Science, Rural Development Administration) ;
  • Park, Hyung Soo (Grassland and Forage Division, National Institute of Animal Science, Rural Development Administration) ;
  • Hwang, Tae-Young (Grassland and Forage Division, National Institute of Animal Science, Rural Development Administration) ;
  • Ji, Hee Chung (Grassland and Forage Division, National Institute of Animal Science, Rural Development Administration) ;
  • Lee, Ki-Won (Grassland and Forage Division, National Institute of Animal Science, Rural Development Administration)
  • 투고 : 2020.09.08
  • 심사 : 2020.09.23
  • 발행 : 2020.09.29
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초록

This study was conducted at the National Institute of Animal Science from 2010 to 2017. As a variety that is sufficiently productive in the southern regions to replace imported varieties and sufficiently cold-resistant to be cultivated in the central-northern regions, "IR605" was developed and submitted to the Korea Seed & Variety Service in an application for protection. The novel Italian ryegrass variety "IR605" is a diploid with green leaves, a semi-erect growth habit before wintering, and an erect growth habit in the spring. "IR605" was a medium maturing variety with a heading date of around May 15th. "IR605" had a flag leaf width of 9.9 mm, flag leaf length of 26.7 cm, and plant length on the heading date of 100 cm, which was approximately 5 cm longer than "Kowinearly." The stem thickness and ear length of "IR605" are 0.08 mm thicker and 0.5 cm longer than those of "Kowinearly", respectively. The cold-resistance of "IR605" was weaker than that of "Kowinearly", but strong enough to be cultivated in Pyeongchang, Gangwon province. The dry matter yield of "IR605" (9,308 kg/hectare) was 20% higher than that of "Kowinearly", which was further pronounced in the southern region of Haenam, where there was a 52% increased (p < 0.05). The in vitro dry matter digestibility of "IR605" was 68.4% at which was slightly higher than that of "Kowinearly", The total digestible nutrients was 58.5%, which was slightly lower than "Kowinearly". Overall, the feed quality characteristics of "IR605" were similar to those of "Kowinearly".

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참고문헌

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