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

The Korean Society of Grassland and Forage Science (한국초지조사료학회)
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Growth Characteristics and Yield of New Variety Italian Ryegrass (Lolium multiflorum Lam.), "Oasis"

  • Jae Hoon Woo (Grassland and Forage Division, National Institute of Animal Science, RDA) ;
  • Bo Ram Choi (Grassland and Forage Division, National Institute of Animal Science, RDA) ;
  • Sang-Hoon Lee (Grassland and Forage Division, National Institute of Animal Science, RDA) ;
  • Ki-Won Lee (Grassland and Forage Division, National Institute of Animal Science, RDA)
  • Received : 2023.09.20
  • Accepted : 2023.09.26
  • Published : 2023.09.30
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Abstract

The experiment aim to breed an early-maturing variety of Italian ryegrass (Lolium multiflorum Lam.). It was conducted at the Grassland and Forage Crops Division, National Institute of Animal Science, RDA, Cheonan, Korea, from 2022 to 2023. The new variety named "Oasis" is a diploid with green leaves and has a semi-erect growth habit in late fall, and an erect growth habit in early spring. With a heading date of May 10, Oasis is categorized as an early-maturing variety. Compared with the "Florida80" as a control variety, Oasis's flag leaf was 1 mm wider and 2 cm shorter, while the plant length was 7.8 cm longer. Additionally, the ear of Oasis was 1.2 cm longer than that of Florida80, and it showed lodging resistance. The dry matter yield of Oasis (8,805 kg/ha) was higher than that of Florida80. The total digestible nutrient and crude protein contents of Oasis were 64.5%, and 9.3%, respectively, which were 1.1% and 0.6% higher than those of Florida80, respectively. The neutral and acid detergent fiber contents in Oasis were 54.2% and 30.8%, respectively, which was 1.9% and 1.4% lower than those of Florida80, respectively. These results indicate that Oasis has good dry matter yield in the most of region and especially, middle and northern region of South Korea.

Keywords

Acknowledgement

This study was conducted at the National Institute of Animal Science's Grassland & Forages Division. In an application for protection, the developed variety was submitted to the Korea Seed & Variety Service in 2023 under the name "Oasis" (Application Number: Application-2023-323) and Cooperative Research Program for Agriculture Science & Technology Development (Project No. PJ001669901), Rural Development Administration, Republic of Korea.

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