• 식물조직배양학회지
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• 제28권6호
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• pp.323-328
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• 2001

이탈리안 라이그래스의 종자배양에서 캘러스 형성 및 식물체 재분화 체계를 확립하기 위하여 기본배지와 탄소원의 종류별 식물체 재분화 정도 및 배양효율의 품종 간 차이 등에 대한 실험을 수행하여 얻어진 결과를 요약하면 다음과 같다. 기본배지의 종류에 따른 캘러스 형성 및 식물체 재분화율은 MS 배지가 N6 배지나 B5 배지보다 높게 나타났다. 배지 내에 첨가되는 탄소원의 종류에 따른 식물체 재분화율은 sucrose가 maltose보다 효과적이었다. 이탈리안 라이그래스의 종자배양에 있어서 모식물의 genotype에 따라 식물체 재분화 능력은 큰 차이를 보였으며, 공시품종 중 'Rio' 와 'Jeanne' 의 재분화 능력이 각각 38%와 56%로 가장 높았다.

• 한국초지조사료학회지
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• 제18권1호
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• pp.11-18
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• 1998

Twelve Italian ryegrass (Lolium mult~flomm L.) cultivars have recommended as the government recommended forage cultivars since 1984, however, the forage performance and quality have been mostly tested at two locations, such as Suweon and Sunghwan in the Middle Northwestern and Middle Southwestern Coast Regions, respectively. Therefore, the objective of this experiment was to retest the forage performance and quality of already recommended twelve government Italian ryegrass cultivars at five scattered locations, such as Icheon, Suweon, Sunghwan, Keon- and Kwangju from 1992 to 1995 with the intention of improving recommendations to dairy farmers. Cultivars with more dry matter yield than the control 'Tetrone' were 'Tosca' , 'Bartissimo' , 'Florida 80' and 'Gordo' in the Middle Northwestern Coast Region ; 'Tosca' , 'Florida 80' , 'Bartissimo' , 'Wencke' and 'Gordo' in the Middle Southwestern Coast Region ; 'Tosca' , 'Florida 80' , 'Sikem' , 'Bartissimo' , 'Wencke' and 'Gordo' in the Keongbuk Inland Region; 'Florida 80', 'Tosca' , 'Barmultra' and 'Bartissimo' in the Southern Inland Region and 'Florida 80' , 'Gordo' , 'Sikem' , 'Bartissimo' and 'Tosca' in the Southern Coast Region. At all the locations in 1992-95, 'Florida 80' produced the highest forage yield and showed earliness, but this cultivar was less cold tolerant in the Middle Northwestern and Middle Southwestern Coast Regions and grew tall which made it vulnerable to lodging in all the exprimental regions except the Southern Coast. Differences among the ryegrass cultivars for the three year mean ADF and NDF were small and inconsistent.

• 농업과학연구
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• 제50권3호
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• pp.365-371
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• 2023

This experiment was carried out to breed a medium maturing variety of Italian ryegrass (Lolium multiflorum Lam.) in Grassland and Forage Crops Division, National Institute of Animal Science, Rural Development Administration (RDA), Cheonan from 2019 to 2020. An Italian ryegrass variety, IR 604 is a tetraploid variety with green in leaf color and has half-erect growth habit in late autumn and erect growth habit in early spring, IR 604 was on May 17 in heading date as a medium maturing variety. Also, IR 604 was longer by 11 cm in flag leaf length and longer by 1.3 cm in plant height than those of the control variety, Kowinner, respectively. IR 604 was also thicker by 1.0 mm in stem thickness and strong in winter hardness. Dry matter (DM) yield (11,036 kg/ha) of IR 604 was 16.6% higher than that of Kowinner. Total digestible nutrient (TDN), crude protein (CP) and relative feed value (RFV) of IR 604 were 60.4, 13.8% and 100.6 which are 1.4, 3.3%, 7.7 higher than those of Kowinner, respectively. Acid detergent fiber (ADF) and neutral detergent fiber (NDF) of IR 604 were 35.5 and 56.7% which are 1.3 and 3.6% lower than those of Kowinner, respectively.

• 농업과학연구
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• 제45권1호
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• pp.43-49
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• 2018

The species of forage crops used in this study were Italian ryegrass (cv. Kowenery), sorghum (cv. SX17), proso millet (cv. domestic) and Japanese millet (cv. Jeju). The plant height of the summer crops was the highest at the dough stage. The dry matter yield of Italian ryegrass was 902.7 kg per 10 a. The dry matter yield of the winter crop and sorghum was 11,985 kg when harvested at the dough stage rather than at the first and second harvests. The proso and Japanese millet also had higher yields for dry matter during the dough stage rather than during heading and regeneration. The acid detergent fiber (ADF) content of Sorghum was lower than that of the first and second harvest; however, the proso and Japanese millet had a higher ADF content at the dough stage. The neutral detergent fiber (NDF) content was higher at the dough stage than at the first and second harvest, and the crude protein content was also lower at the dough stage than at the first and second harvest. The crude protein production for the dry matter yield was about 84 kg in Sorghum when harvested at the dough stage. Proso millet showed no difference for the crude protein production at the heading and dough stage while the Japanese millet had a higher crude protein production. There were no differences in the total digestible nutrients (TDN) content for the three crops according to the harvesting time. Therefore, if Sorghum and Proso and Japanese millet are to be combined with Italian ryegrass, it is better to harvest them at the dough stage.

• 한국초지조사료학회지
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• 제20권4호
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• pp.285-294
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• 2000

To investigate the effect of Mycorrhiza (Glomus intradics) and Rhizobium inoculation on the N, P utilization and growth response of Alfalfa (Medicago saliva L.) and Perennial ryegrass (Lolium perenne L.) in mixed sward, four treatments (non-inoculation, Control; Mycorrhiza inoculation: M; Rhizobium inoculation, R and Mycorrhiza and Rhizobium inoculation, M+R) were applied. The associated analyses were canied out on the early vegetative growth stage (DAS 56, 56 days after seeding) and on the early flowering stage (DAS 126). The decreased rate of total N and P content in soil, with advancing plant growth, was relatively higher in the M and M + R treatment than control. The content of availabie phosphorus in soil at DAS 126 increased by about 34 and 38 % in M and M+R treatment compared to control (189.2 mg PzOskg DM), while non-significant changes was observed in R treatment. Total N uptake and P uptake in the control at DAS 126 were 44.71 and 3.52 mglplant in mixed sward, respectively. About 71, 98 and 197 % of increases in total N uptake and 70, 72 and 11 1 % of increases in total P uptake were estimated in M, R and M+R treatment. Comparing to control, total dry matter yield significantly increased by 27, 33 and 53 %, and crude protein yield also by 78, 83 and 204 %, respectively, in M, R and M+R treatment. The present data indicated that mycorrhiza orland rhizobium inoculation improved N, P utilization of both alfalfa and perennial ryegrass plants, and consequently increased total yield (especially by dual inoculation, M+R). (Key words : Alfalfa, Perennial ryegrass, Mycorrhiza, Rhizobium, N and P Utilization, Growth, Yield)

• 아시안잔디학회지
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• 제13권2호
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• pp.71-78
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• 1999

The influence of increasing livel (0.0, 0.05, 0.1, 0.2, 0.4, 0.6, 0.8, 1.2, 1.6, and 2.0%) fo NaCl on the germination of red fescue (Festuca rubra) 'Sea Breeze', tall fesce(Festucaarundinacea) 'Pixie', creeping red fescue (Festuca rubra ssp. rubra) 'Cindy', annual rye-grass (Lolium multiflorum) 'Permer Ⅱ', perennial ryegrass (Lolium perenne) 'Pennant', fairway wheatgrass(Agropyron cristatum), creeping bentgrass (Agrostis palustris) 'Penncross', and kentucky bluegrass (Poa pratensis) 'Nuglade' was investigated. Red fescue 'Sea Breeze', tall fescue 'Pixie', and creeping red fescue 'Cindy' had greater than 90% seed germination at NaCl concentrations of 0.2% or lower, while showing similar seeding shoot and root lengths and TAA50 values as the control. Creeping red fescue 'Cindy'gave at 0.6% or higher NaCl. Perennial ryegrass 'Pennant' and annual ryegrass 'Permer Ⅱ' showed more than 95% seed germination when NaCl concentrations were 0.4% and 0.8%, respectively. Fairway wheatgrass, creeping bentgrass 'Penncross' and Kentucky bluegrass 'Nugade' had showing similar germination percent, shoot and root lengths and T50 values as the control at NaCl concentrations of 0.1% or lower. In general, germination percent and the lengthes of seedling roots and shoots of all species tested decreased as NaCl concentrations iscreased. The T50 values became greater as NaCl concentration increased. Seed fermination in red fescue 'Sea Breeze', tall fescue 'Pixie',perennial ryegrass 'Pennant', and annual ryegrass 'Permer Ⅱ' was compoetely inhibited at 2.0% NaCl. Creeping red fescue 'Cindy' and fairway wheatgrass gardly germinated at 1.6% MaCl. Creeping bentgrass 'Penncross' and Dentucky bluegrass 'Nuglade' showed a complete inhibition of germination at 1.2% and 0.6% NaCl, respectively.

• 한국초지조사료학회지
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• 제29권4호
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• pp.285-290
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• 2009

페레니얼 라이그라스의 5가지 품종을 이용하여 성숙종자로부터 배발생 캘러스 유도 및 캘러스로부터의 식물체 재분화 효율을 조사하였다. 성숙종자로부터 4주 동안 배양한 캘러스 유도율은 'Accent', 'Topgun', 'Renenge GLX', 'Bison', 'Tetrellite' 순으로 높은 캘러스 유도율을 보였고 암상태에서 배양한 캘러스가 광상태에서 배양한 것보다 7~9% 정도 높은 효율을 나타내었다. 식물체로의 재분화에 적합한 배지는 MS 배지보다 N6 배지에서 식물체 재분화율이 우수하였다. 품종간의 재분화율은 'Bison', 'Accent', 'Topgun', 'Renenge GLX', 'Tetrellite' 순으로 높게 나타났으며 광상태에서 유식물로 분화되는 개체가 1~7% 정도 많이 관찰되었다. 본 연구를 통하여 밝혀진 캘러스 유도율과 식물체 재분화율이 우수한 품종은 분자육종을 통한 신품종 페레니얼 라이그라스의 개발에 유용하게 이용될 수 있을 것이다.

• 한국초지조사료학회지
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• 제35권3호
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• pp.245-250
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• 2015

This study was conducted from October 2014 to May 2015 to explore forage production and feed values of Italian ryegrass, Rye and whole crop barley as winter forage crops in the Southern region of Korea. The experimental location was over 10 points for each species and each sampling point area was $1m^2$ (Width: 1 m ${\times}$ Length: 1 m). Air mean temperature and rainfall in the Southern region of Korea during the experimental period was $6.95{\pm}5.75^{\circ}C$ and $70.45{\pm}54.68mm$, respectively. Fresh forage yield of Italian ryegrass, the most cultivated forage in the Southern region of Korea, was $44.4{\pm}7.0ton/ha$. The percentage of dry matter for whole crop barley was $28.9{\pm}7.0%$. Crude protein (CP) was higher in Italian ryegrass ($10.7{\pm}5.3%$) while total digestible nutrient (TDN) had the highest value in whole crop barley. Crude protein was not significantly different by location. However, the neutral detergent fiber (NDF), acid detergent fiber (ADF) and total digestible nutrient value of forage from Jeonbuk province were higher than in forage from Gyeongnam province.

• 한국초지조사료학회지
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• 제21권1호
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• pp.15-20
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• 2001

예취한 페레니얼 라이그라스의 재생에 미치는 식물 생장 조절물질의 영향을 조사한 결과, 0.1. 0.5 mg/L의 cytokinin 처리시 가장 높은 재생력을 나타내었으며, kinetin과 2iP가 BAP보다 재생에 보다 좋은 영향을 미쳤다. 2,4-D의 경우, 0.1 mg/L에서 가장 높은 재생력을 나타내었으며, GA$_3$은 초기재생력은 왕성하였으나 예취 2주 이후의 생장이 느린 것으로 나타났다. Cytokinin과 auxin의 세포분열에 미치는 경합을 조사한 결과, kinetin과 2,4-D를 단독으로 처리했을 때보다 두 생장 조절물질을 함께 처리했을 때 더 좋은 재생력을 나타내었다. 페레니얼 라이그라스의 현탁 배양세포에서도 cytokinin 과 auxin을 단독으로 처리했을 때보다 함께 처리했을 때 세포분열이 왕성한 것으로 나타났다.

• 아시안잔디학회지
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• 제17권1호
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• pp.13-17
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• 2003

본 실험은 종합 토양개량재 KOB-Soil이 한지형 잔디의 생육에 미치는 영향을 구명하기 위해 Creeping bentgrass 및 Kentucky bluegrass (KB) 75%+perennial ryegrass(PR) 25%로 조성된 잔디면에서 실험을 수행하였다. 실험기간은 2001년 9월 1일∼2002년 8월 31일까지 강원도 정선군 사북읍, 강원카지노 리조트 실험포 화절령 지구에서 수행하였다. 처리는 USGA 지반의 혼합층에 모래 80%+피트 20%, 모래80%+KOB-Soil 1호 20% 및 모래 80%+KOB-Soil 2호 20%로 하였다. 조사항목으로 잎 길이(mm), 잎 수, 잔디품질, 뿌리길이(mm)를 조사하였다. 종합 토양개량재 KOB-Soil은 한지형 잔디인 크리핑 벤트그래스와 Kentucky bluegrass (KB) 75%+perennial ryegrass(PR) 25%의 잎 길이, 잎 수, 잔디품질, 및 잔디 뿌리 생육을 촉진하는 것으로 나타났다. 특히 KOB-Soil에 있어 크리핑 벤트그래스와 KB 75%+PR 25%의 생육은 KOB-Soil 1호가 2호보다 우수한 것으로 나타났다. 이는 KOB-Soil 1호는 BFS-1000이 ㎥당 2.76L 수량 및 Root grow(황산고토를 주성분으로 하는 천연 토양개량제)가 ㎥당 0.48L 의 수량이 함유되어 있기 때문으로 판단된다.