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 Rice Black-Streaked Dwarf Virus(RBSDV) Infection Rate on Forage Productivity of Corn Variety in Middle District of Korea

중부지역에서 검은줄오갈병 발생이 사료용 옥수수 품종의 조사료 생산성에 미치는 영향

  • 최기준 (농촌진흥청 국립축산과학원) ;
  • 임영철 (농촌진흥청 국립축산과학원) ;
  • 윤세형 (농촌진흥청 국립축산과학원) ;
  • 지희정 (농촌진흥청 국립축산과학원) ;
  • 이상훈 (농촌진흥청 국립축산과학원) ;
  • 정민웅 (농촌진흥청 국립축산과학원) ;
  • 김원호 (농촌진흥청 국립축산과학원) ;
  • 박형수 (농촌진흥청 국립축산과학원) ;
  • 김기용 (농촌진흥청 국립축산과학원)
  • Received : 2017.01.24
  • Accepted : 2017.03.21
  • Published : 2017.03.30
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Abstract

This experiment was carried out to study the effect of rice black-streaked dwarf virus(RBSDV) infection rate on forage productivity of corn varieties in Cheonan of chungcheongnamdo from 2006 to 2008. Forage corn varieties of 10 were cultivated with first cropping(seeding in the last ten days of April) and second cropping(seeding in the last ten days of May) system in field and tested the infection rates of RBSDV and productivity of forage. The Infection rate of RBSDV was significant difference between corn varieties in middle district of Korea. Resistant corn varieties for RBSDV were 'Kwanganok', 'P3156', 'Kwangpeyongok' and 'P3394' but susceptible varieties were 'Suwon19', 'DK697', 'GW6959' and NC+7117. Dry matter(DM) yield of forage corn according with infection rates of RBSDV in field was significant difference between varieties(p<0.05). DM yield of susceptible varieties, 'Suwon 19', 'DK697' and 'GW6959' was lower about 20% than that of resistant varieties, 'Kwangpeyongok' and 'P3156'. For increasing the productivity of forage corn, recommend of resistant varieties for RBSDV and control of seeding time are very important in middle district of Korea.

본 시험은 중부지역에서 사료용 옥수수의 검은줄오갈병 발생이 조사료 생산성 에 미치는 영향을 조사하기 위하여 2006년부터 2008년까지 충청남도 천안에서 수행되었다. 사료용 옥수수의 공시품종은 국내에서 재배되고 있는 10품종으로 하였고, 재배방법은 4월 하순에 파종하는 1모작 재배와 5월 중하순에 파종하는 2모작 재배로 나누어 재배하였으며, 품종별 검은줄오갈병의 발생률과 수량성을 조사하였다. 우리나라 중부지역에서 사료용 옥수수의 품종별 검은줄오갈병의 발생률은 차이가 있었다(p<0.05). 검은줄오갈병에 강한 품종은 광안옥, P3156, 광평옥 및 P3394 품종이었고 약한 품종은 'NC+7117', '수원19호' 'DK697' 및 'GW6959' 품종이었다. 검은줄오갈병 발생에 따른 사료용 옥수수의 조사료 건물수량은 품종 간에 차이가 있었으며(p<0.05), 검은줄오갈병 발생이 많았던 수원 19호와 GW6959 품종의 건물수량이 검은줄오갈병 발생이 적었던 광평옥과 P3156 품종보다 20% 정도 적었다. 옥수수의 품종별 암이삭 비율은 검은줄오갈병 발생이 많았던 NC+7117 및 GW6959 품종이 약 29%로 가장 낮았고 검은줄오갈병의 발생이 적었던 광평옥, P3394 및 P3156 품종에서는 각각 34.0, 38.7 및 36.4%으로 높은 경향이었다. 따라서 우리나라 중부지역에서 사료용 옥수수를 재배할 때는 검은줄오갈병에 강한 품종을 선택하고 파종시기의 조절이 매우 중요하다 할 것이다.

Keywords

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