Due to climate change and the expansion of cultivation areas through the use of reclaimed land, changes in the selection of Italian ryegrass (Lolium multiflorum L.) varieties are anticipated. This study was conducted to compare the growth characteristics before overwintering, productivity, and feed value of eight Italian ryegrass varieties with different maturing stages under the same cultivation conditions. The variety ‘Lm4ho’, a medium-maturing type, showed superior growth characteristics before overwintering, including plant height, leaf length, and leaf width. The heading date was advanced in all varieties, with a greater degree of advancement observed in varieties with earlier heading dates. When harvested at the heading stage of the early-maturing types, the dry matter yield of the medium-maturing types was not significantly different from that of the early-maturing types. However, when harvested at the heading stage of the medium-maturing types, the dry matter yield was higher than that of the early-maturing types. Specifically, ‘Lm4ho’ produced 2,518 kg/ha more than ‘Kowinearly’. The late-maturing variety IR901 and the medium-maturing varieties ‘Lm4ho’ and ‘Kowinmaster’ showed statistically superior dry matter yields. In terms of forage value, including crude protein (CP), total digestible nutrients (TDN), and relative feed value (RFV), the medium- and late-maturing types outperformed the early-maturing types. Notably, ‘Lm4ho’, ‘IR 901’, and ‘Hwasan 104’ were evaluated as suitable varieties for high-quality forage production. These results suggest that medium-maturing varieties may be suitable for double cropping in the central regions due to climate change. We propose that future breeding of Italian ryegrass should expand from focusing on cold tolerance and early-maturing varieties to include mediumand late-maturing varieties that consider both productivity and quality.

This study was conducted at the National Institute of Animal Science (NIAS) from 2010 to 2017 to develop a late-maturing variety with high productivity for cultivation in the southern region of South Korea. The new variety of Italian ryegrass, ‘IR901’, was a late-maturing variety, and its heading date was 22 May, 17 days later than that of the control variety ‘Kowinearly’. ‘IR901’ had a flag leaf width of 11.2 mm, flag leaf length of 31.8 cm, and plant length of 103 cm on its heading date. The combined average dry matter yield of ‘IR901’ in all three adaptability evaluation regions (Cheonan, Pyeongchang and Haenam) was 7,747 kg/ha, which was similar to that of the ‘Kowinearly’ variety (7,734 kg/ ha). However, the average dry matter yield over three years in Cheonan and Pyeongchang was 82% and 96%, respectively, compared to that of the control, which was most likely because of the poor cold tolerance of ‘IR901’. By contrast, in Haenam, in the southern region, the average dry matter yield of ‘IR901’ was 19% higher than that of the ‘Kowinearly’ variety. The proportions of crude protein (CP), total digestible nutrients (TDN), acid detergent fiber (ADF), and neutral detergent fiber (NDF) in ‘IR901’ were 8.6%, 59.7%, 36.9%, and 54.8%, respectively; the proportions were 0.2% lower, the same, the same, and 2.5% lower than those in the ‘Kowinearly’ variety. The determined in vitro dry matter digestibility (IVDMD) of ‘IR901’ was 72.2% higher than that of ‘Kowinearly’ (67.2). In general, of the two varieties, the forage quality of ‘IR901’ was marginally superior to that of ‘Kowinearly’.

‘목우’는 총체사료용 벼 품종을 육성할 목적으로 1999년 하계에 다산벼를 모본으로 하고 수원 431호와 IR71190-45-2-1을 교배한 F1을 부본으로 삼원교배하여 계통육종법으로전개 후 2009년 총체사료용 벼로 육성하였다. 주요 농업적특성은 중부와 영남평야지 보통기 재배에서 출수기가 평균9월 2일로 녹양보다 17일 늦은 만생종이고 벼 키 (간장)는92 cm로 장간이며, 주당수수는 11개, 천립중은 21.7 g으로녹양보다 가볍다. 만생종 품종으로 숙기가 늦기 때문에 생육후기 기상이 불량할 경우 출수가 지연될 수 있는 산간지, 냉수용출답 및 만식재배는 피하는 것이 좋으며 충분한생육일수를 확보하는 것이 총체수량성을 높이고 충실한 종자를 생산하는데 유리하다. 또한 주당수수가 적기 때문에m2당 27주 이상 밀식재배가 필요하며 내비성이 있으므로질소 시비량을 180 kg/ha 수준으로 유지하는 것이 유리하다. 재해저항성은 잎도열병, 흰잎마름병, 바이러스병에 복합저항성이나 목도열병과 벼멸구에는 약하다. 총체벼 품종으로서 사료가치는 조단백질 5.4%, 가소화양분총량 61.6%으로 양호한 편이나 녹양보다 낮은 경향이며 총체수량성은건물기준으로 10 a당 평균 1,956 kg으로 녹양보다 38% 증수되는 경향을 보였다. 이 품종의 재배에 알맞은 지역은중부평야, 영남평야지가 적합하며 후기 기상이 좋은 지역이 안전하다.

본 시험의 목적은 대구 경북에 자생하는 헤어리베치로 다수성 조생품종과 중만생품종을 개발하기 위하여 수행하였다. 경북 성주와 경남 사천에서 1998년부터 2006년까지 자료수집 및 순화, 생육이 왕성한 조생 및 중만생계통 선발, 상호교잡의 단순순환선발법으로 조생종인 콜드그린과 중만생종인 청파를 육성하였다. 육성종자는 2004년부터 2006년까지 경북성주와 경남사천에서 생육특성과 수량을 평가하였다. 줄기의 털은 콜드그린과 청파는 있었으나, 헤이메이커프러스와

사료용 옥수수 “DK 7545” 교잡종은 미국의 Dekalb plant Genetics Co., “Garst 8285”는 Garst Seeds Co., 그리고 GW 737은 Crosbyton Co.에서 각각 육성한 품종들이다. 이들 품종들의 수입 사료작물 지역적응성을 검정하기 위하여, 수원과 천안 2개 지역에서, 3개년 동안 생산력을 검정한 결과, 그 우수성이 인정되어 2002년 농협중앙회 수입적응성 심의위원회에서 신규보급품종으로 결정되었으며 이들 교잡

This experiment was carried out to determine growth characteristics, dry matter (DM) yield, seasonal yield distribution and nutritive value of early- and late maturity orchardgrass, 1990 to 1992. The cultivars used in this study were Potomac, Hallmark (ea

This experiment was canied out to study the effects of seeding and harvesting dates on the growth of early and late maturing rye(Seca1e cereale L.) varieties at the forage testing field of S.N.U., Suweon, from September 1986 to May 1989. Leaf and tiller n

In order to reduce the problems from the presence of rye crop residues in maize establishment and yield, and also to improve the growth, productivity and nutritive value of rye(Seca1e cereal L.). an experiment was canied out to determine the variety effec

In order to reduce the problems from overlapping between rye harvest and maize seeding dates, and also to improve the growth, productivity and nutritive value of rye (Secale cereale L.), an experiment was carried out to determine the variety effect of rye

본 시험은 조.만생 사초용 봄연맥의 봄파종시기가 생장 및 품질에 미치는 영향을 알아보기 위하여 1991년 3월부터 6월까지 서울 대학교 농업생명과학대학 부속실험목장의 사초시험포장에서 실시 되었으며, 만생 Cayuse 품종과 조생 Speed oat 품종을 주구로 하고, 파종시기(3월 15일.22일,29일, 4월 5일 ,12일)를 세굴 하는 분할구 시험법으로 3반복 설계 배치하였으며 겨고는다음과 같이 요약된다. 1. 파종기가 7일씩 늦어짐에 따라서 출수시작

For the constitution of forage cropping system including the double-cropping of corn, attention has been directed towards the early and short maturing varieties of corn such as Comet 80, Comet 85 and Linda as a component forage crop of forage cropping sys

‘Manbaek’ is a bacterial blight resistant mid-late maturing rice cultivar with high grain quality. ‘Manbeak’ was derived from anther culture using the backcross combination, Hopum*2/SR30075. ‘Hopum’ is a mid-late maturing rice cultivar with high grain quality and ‘SR30075’ is a pyramid line carrying three bacterial blight resistance genes. ‘Manbaek’ was selected through the pedigree method, yield trials, and local adaptability tests. ‘Manbeak’ carrying two bacterial blight resistance gene Xa3 and xa5 showed high-level and broad-spectrum resistance against bacterial blight. ‘Manbaek’ was resistant to K3a, mostly virulent race in Korea, and exhibited resistance reaction against 16 Korean bacterial blight isolates. ‘Manbaek’ was a mid-late maturing rice. The heading date of ‘Manbaek’ was August 19th, which was 5 days later than that of ‘Nampyeong’. Manbaek’ was a lodging-tolerant rice with short culm and dark green leaf. Due to the low viviparous germination, ‘Manbaek’ could be a useful material to prevent pre-harvest sprouting. ‘Mabeak’ was resistant to bacterial blight and rice stripe virus, but susceptible to other virus diseases and insect pests. The yield of ‘Manbaek’ was similar to ‘Nampyeong’. ‘Manbaek’ showed excellent grain appearance and good tastes of cooked rice, so that it could contribute to improving the quality of bacterial blight resistant cultivars. ‘Manbaek’, bacterial blight resistant cultivar with high grain quality, is suitable for the cultivation at bacterial blight prone area and has been utilized in the breeding programs for enhancing the resistance against bacterial blight (Registration No. 6069).

‘Neugeunsuperjami’, a late maturing and blackish purple pigmented rice cultivar, was developed from a cross between Gumjeongbyeo and Hwaseonchalbyeo. During selected by pedigree breeding method until F8 generation, a promising line, SR28757-22-2-4-2-1-1-2-B, was selected and advanced by late maturing and content of Cyanidin 3-glucoside. Advance line designated as the name of ‘KNOU 13’. This variety headed on August 28, 140 days to heading after sowing. The culm length and the panicle length of ‘Neugeunsuperjami’ was 91.0 cm and 20.0 cm, respectively. The number of panicle per hill was 10.5 and the number of grain per panicle was 88.6. The dehulling recovery of ‘Neugeunsuperjami’ was about 80.5% and 1,000-grain weight was about 19.7 g, heavier than that of ‘Heugjinju’. ‘Neugeunsuperjami’ has 3~5 times higher Cyanidin-3-glucoside(C3G) content compared with ‘Heugjinju’.

'Hyowon 2’, a new medium-late maturing glutinous rice variety with short clum and lodging tolerance was developed by the rice breeding team of Pusan National University in 2013. This cultivar was derived from a cross between 'Junam’ as a short clum source and ‘Donna’ with a good glutinous properties. During selected by the pedigree breeding method, until F8 generation. As a result, a promising line, JS22-3-24-1-6-2-1-1-1, was advanced and designated as the name of ‘SP 105’ in 2012. This variety headed on Aug. 22 is 9 days later than ‘Dongjinchal’ in middle plane. The Culm length and panicle length of this variety was 65.6 cm and 22.5 cm, respectively. This variety has about 14.4 tillers per hill and 113 spikelet numbers per panicle. The ratio of ripened grain is about 93.0% and 1000-grain weight was 18.4 g in brown rice. This variety has higher α-tocotrienol content compared to that of ‘Hwasunchal’. The yield performance of brown rice was 4.81 MT/ha in local adaptability test.

Rural Development Administration has recently developed mid-late maturing rice cultivars with high quality. This study was conducted to select suitable mid-late maturing rice cultivar in major cultivation areas of Gangwon Province among domestic breeding cultivars for 2 years from 2013 to 2014. The average air temperature during the experiment in 2013 and 2014 was higher 0.6~1.1°C in Chuncheon, 1.0~ 1.3°C in Gangreung, and 0.1~0.7°C in Cheolwon than normal year. Precipitation in ripening period was higher 52.5 mm in 2013, but lower 176.4 mm in 2014 than normal year in Chuncheon, lower 103.1 mm in 2013 and higher 42.9 mm in 2014 in Gangreung, lower 225.9~322.7 mm in Cheolwon. Duration of sunshine in ripening period was higher 142 hours in Chuncheon, 108 hours in Gangreung, and 94 hours in Cheolwon than normal year in 2013, higher 20~21 hours in Chuncheon and Gangreung, and 82 hours in Cheolwon than normal year in 2014. Milled rice yield of ‘Samgwangbyeo’ and ‘Daebobyeo’ was 594 kg per 10a, and 578 kg for ‘Jinsumibyeo’ in Chuncheon in plain area. For Gangreung in east coastal area, the yield of ‘Daebobyeo’ was 555 kg per 10a, ‘Hopumbyeo’ was 554 kg, and ‘Chilbobyeo’ was 546 kg. For Cheolwon in mid-mountainous area, the yield was 504 kg per 10a for ‘Daebobyeo’ and 489 kg for ‘Haiamibyeo’. But there was no difference in milled rice yield among cultivars tested in the study at each area. Head rice ratio of ‘Haiamibyeo’, ‘Jinsumibyeo’, and ‘Mipumbyeo’ in Chuncheon was 94.2~95.6% higher than the other cultivars. In Gangreung head rice ratio of ‘Hopumbyeo’, ‘Haiamibyeo’, and ‘Samgwangbyeo’ were 85.2~88.3% but there was no difference among cultivars except ‘Gopumbyeo’ and broken rice ratio of ‘Haiamibyeo’, ‘Samgwangbyeo’, and ‘Mipumbyeo’ were low as 7.5~8.5% and palatability of ‘Mipumbyeo’ was higher than the other cultivars. Head rice ratio of ‘Daebobyeo’ was the highest as 89.2% and there was no difference in broken and chalky rice ratio and palatability among cultivars in Cheolwon. Considering rice yield and quality in major cultivation areas of Gangwon Province, suitable mid-late maturing rice cultivars were ‘Samgwangbyeo’, ‘Haiamibyeo’, and ‘Jinsumibyeo’ in Chuncheon, ‘Daebobyeo’ and ‘Chilbobyeo’ in Gangreung, and ‘Daebobyeo’ and ‘Haiamibyeo’ in Cheolwon. The results obtained in the study imply that the selected cultivars with high yield and quality and suitability to Chuncheon, Gangreung, and Cheolwon, respectively could be recommended to rice cultivating farmers in the regions with high priority.

‘단미’는 국립식량과학원에서 1994년 당질미 유전자원인 ‘Sugary’를 모본으로 하고, 재배 안정성이 높은 ‘섬진벼’를 부본으로 인공교배하여 육성한 품종으로 현미의 유리당 함량 이 높으며 중부 및 영호남 내륙 평야 1모작지에 적응하는 중 만생 기능성 품종이다. ‘단미’의 간장은 86 cm로 ‘남평벼’보 다 12 cm 정도 큰 편이며, 이삭당 착립수가 적고 등숙비율 및 현미천립중은 각각 11.3% 및 16.1 g으로 매우 낮은 편이다. ‘단미’는 좌절중이 적고 3절 간장은 큰 편으로서 도복지수가 높으나 천립중이 가벼워 도복은 발생하지 않았으며 수발아는 약한 편이다. 내병충검정에서 도열병 및 흰잎마름병과 줄무늬 잎마름병, 오갈병 및 검은줄오갈병 등 바이러스 및 벼멸구와 애멸구 등 병해충에 대한 저항성은 없다. ‘단미’의 현미 유리당 함량은 Fructose, Glucose, Sucrose, Maltose, 및 Raffinose 가 각각 1.16, 7.87, 9.69, 0.52, 및 2.13%로 ‘남평벼’의 총 유 리당 함량 3.33%에 비해 6.5배 정도 높은 21.73%의 총 유리 당 함량을 보였다. 수량성은 2006년부터 2008년 3개년간 실 시한 지역적응시험 보통기 보비재배 6개소에서 현미 수량은 2.7 MT/ha로서 일반 메벼인 ‘남평벼’ 대비 약 52% 수준을 보였다(품종 등록번호: 01-0001-2010-6).