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

The Korean Society of Grassland and Forage Science (한국초지조사료학회)
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Effect of Heading and BMR types on the Agronomic Characteristics, Forage Yield and Quality of Sorghum × Sudangrass Hybrid

출수형태와 BMR이 수수×수단그라스 교잡종의 생육특성, 생산성 및 품질에 미치는 영향

  • Kim, Jong-Duk (Division of Animal Husbandry, Cheonan Yonam College) ;
  • Ko, Ki-Hwan (Dept. of Golf Course and Horticulture, Keimyung College) ;
  • Kwon, Chan-Ho (Dept. of Animal Science, Kyungpook National University)
  • 김종덕 (천안연암대학 축산계열) ;
  • 고기환 (계명문화대학 골프코스 원예학부) ;
  • 권찬호 (경북대학교 축산BT학부)
  • Received : 2012.08.28
  • Accepted : 2012.09.20
  • Published : 2012.09.30
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Abstract

This experiment was carried out to compare the agronomic characteristics, forage yield and quality of sorghum ${\times}$ sudangrass hybrid at two locations (Sungju and Cheonan) in 2009. The experiment was a randomized complete block design with three replications. The eight recommended hybrids used in this experiment were 'Sordan 79', 'SX17', 'Honey chew', 'Honey grazer', 'G7', 'Jumbo', 'Green star' and 'GT56' hybrids. The heading of four hybrids were headed at both region, Sungju and Cheonan. There are no big differences in general agronomic characteristics among hybrids, but brix scale of heading and BMR (brown mid rib) types were higher than those of other hybrids. Dry matter (DM) and plant height of heading type hybrids were higher than those of headless types. The fresh, DM and TDN (total digestible nutrients) yields of heading type hybrids were also higher than those of headless types, and BMR types were lower than others. The crude protein and crude ash contents of headless hybrids were higher than those of heading hybrids, while its non-fiber carbohydrate (NFC) content showed the opposite results. The acid detergent fiber (ADF) and NFC contents of BMR types were lower than others. The results of this experiment indicates that heading hybrids were more higher than headless hybrids in the agronomics and forage yield of sorghum ${\times}$ sudangrass. However heading types were lower headless types in quality of sorghum ${\times}$ sudangrass. And BMR hybrids were also high quality of sorghum ${\times}$ sudangrass hybrid because of higher brix content and lower ADF content among tested hybrids.

본 시험은 수수${\times}$수단그라스 교잡종 품종의 생육특성, 사초수량 및 품질을 비교하기 위하여 2009년 경북 성주와 충남 천안에서 수행하였다. 시험구 배치는 8처리 3반복의 난괴법 배치로 하였다. 시험구의 처리는 품종으로 하였으며, 공시한 품종은 'Sordan79', 'SX17', 'Honey chew', 'Honey grazer', 'G7', 'Jumbo', 'Green star' 및 'GT56'를 공시하였다. 2지역 모두에서 출수형 4품종은 출수를 하였다. 그 외 생육특성에서는 품종 간에 차이가 없었으나 출수형과 BMR 품종이 다른 품종보다 당도가 높았다. 건물률 및 초장은 출수형이 비출수형 보다 높았다. 생초수량, 건물수량 및 TDN 수량도 출수형이 비출수형 보다 높았고 BMR 품종은 다른 품종보다 적었다. 조단백질과 조회분 함량은 출수형 품종이 비출수형 품종보다 많았으나 비섬유성탄수화물(NFC)은 상반된 결과를 보였다. BMR 품종의 ADF 및 NFC 함량은 다른 폼종 보다 작았다. 이상의 결과를 종합해 볼 때 출수형이 비출수형에 비하여 사초 생산성이 우수하고, 품질은 비출수형과 BMR 품종이 우수한 경향을 보였다. 그리고 BMR 품종은 당도가 높고 ADF 함량이 낮아 사초 품질 이 우수한 것으로 판단되었다.

Keywords

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