초록 ▼

Ⅳ. 연구개발결과
○ AFACI와 연계한 아․태지역 돌발병해충 대응 국제 네트워크 구축
- IRRI(국제미작연구소), 캄보디아, 인도네시아, 라오스, 필리핀, 태국, 베트남(2지역), 네팔, 방글라데시 등 8개국 1국제기관과 협약
- 한·중 벼 비래해충 예찰협력(농촌지원국, ‘13~’17) : 중국 10지점
- 한·일 협력 과제(‘12~’16) : 현장 맞춤형 조기 경보 시스템 개발
○ 이동성 병해충 국제 네트워크 웹사이트 구축(www.amivs.org)
○ 이동성 병해충 정보교류를 위한 국제워크숍

Ⅳ. 연구개발결과
○ AFACI와 연계한 아․태지역 돌발병해충 대응 국제 네트워크 구축
- IRRI(국제미작연구소), 캄보디아, 인도네시아, 라오스, 필리핀, 태국, 베트남(2지역), 네팔, 방글라데시 등 8개국 1국제기관과 협약
- 한·중 벼 비래해충 예찰협력(농촌지원국, ‘13~’17) : 중국 10지점
- 한·일 협력 과제(‘12~’16) : 현장 맞춤형 조기 경보 시스템 개발
○ 이동성 병해충 국제 네트워크 웹사이트 구축(www.amivs.org)
○ 이동성 병해충 정보교류를 위한 국제워크숍 개최(2회) 및 이동성 병해충 국제 협력 네트워크 구축을 위한 현지 점검(1회)
○ RSV 매개능력별 애멸구 유전적 변이 집단 선발 체계 구축 및 RSV 매개능력이 다른 애멸구 유전적 변이 선발
○ 신문제 주요 벼 바이러스(RSV, RBSDV, RRSV, RGSV)의 유전자원 확보 및 RSV 감염시 벼 기주 유전자의 발현 변화 분석
○ 멸구류 발생 국가 간 이동유발요소 분석 및 이동성 멸구류 실시간 광역이동모델 프로토타입 개발.

Abstract ▼

Rice planthoppers (RPHs) have been causing severe yield reduction of the rice production in Asian countries. RPH also transmits viruses that are detrimental to rice plants. In order to minimize damages caused by RPH and associated viruses, the establishment of collaborative network among Asian count

Rice planthoppers (RPHs) have been causing severe yield reduction of the rice production in Asian countries. RPH also transmits viruses that are detrimental to rice plants. In order to minimize damages caused by RPH and associated viruses, the establishment of collaborative network among Asian countries is very important.
The forecasting data on planthoppers were constructed at the AMIVS system through the monitoring activities by the experts of AFACI countries. About 3,500 light trap data from 2010 to February 2013 was produced from 19 sites in 8 countries, and about 300 sticky trap data (field collection) during 2011 and 2012 was produced from 11 sites in 8 countries. The light trap and field collection data in this year showed that each country or region has a unique seasonal dynamics and dominance pattern of planthoppers according to the cropping pattern and environment. Moreover, we could get rough summary on the year 2012 BPH occurrence among the examined countries. The high number of BPH was mainly observed in Thailand and Vietnam. On the other hand, BPH density was low in other regions. Recently, more data from several countries are being included in this system, and we could expect that more substantial scouting information could be shared and produced in next year.
Long range migratory rice hoppers, such as brown planthoppers (BPHs) and small brown planthoppers (SBPHs) immigrate annually from South East Asia, however, their origin of the migration has not been clearly identified. In Korea, rice is grown only once a year and the transplanting and harvesting rice are well synchronized. The timing and amount of immigrating rice hoppers are important in establishing their densities toward the damaging level to rice crops together with the subsequent environmental conditions, which determine their development levels and speeds.
This study was conducted to understand the whole process of long range migration toward Korean rice area and ultimately aimed to develop the adequate simulation model system for predicting the long range migratory rice hoppers in their outbreaks and damage on the Korean rice ecosystem.
Based on the analysis of rice cultural practices in the southeast Asia indicated that the long range migratory hoppers had different migration route emigrated from different source areas according to the weather systems. The main source of the BPH immigrated in South Korea seemed to be Eastern part of Guangdong Province and South Eastern part of Fujien Province, while the SBPH was mainly from Jiangsu and Zhejiang Province in China. The mass hopper movement distribution could be useful to differentiate the local population from the immigrants in the light trap catch data in late July.
In addition, we improved the existing BLAYER model by incorporating the atmospheric data and the analytical tools and developed a simulation model system for the media of migration. The prototype system was able to predict the temporal movements of hopper clouds in 13 different levels. From the simulation results, the density of hopper can be determined temporally in different heights and the number of hopper passing through a certain designated location can be calculated. The completed system was embedded in the RDA operated “National Crop Pest Management System (NCPMS)” for practical use.
Occurrence of rice plant disease caused by Rice stripe virus (RSV) has been increased in the rice-cultivating areas of Korea. Recently, RSV damage areas were totaled in 14,137 ha in 2007 and 21,541 ha in 2009. Together with this situation, large number of adult insect of SBPH, which is a major vector of RSV, was simultaneously captured through four days, June 1~4, 2011 in an air-net trap. To understand recent RSV outbreak in detail, several factors like the density and viruliferous insect rate of overwintering SBPH, rice variety and cultivation, alternative host plant of RSV, and the genetic variation of RSV have been considered.
To study on the genetic variation of RSV transmission ability in SBPH, we selected two different groups, H and H-1 vs. L and L-1, according to RSV transmission ability. H and H-1 group showed relatively high RSV transmission ability, averaging 62% and 54%, respectively. In contrast, RSV transmission rate of L and L-1 group was relatively low, averaging 30% and 4%, respectively. On the other hand, developmental duration of total nymphal stage in 8H-1 group showed significantly shorter than that in 8L-1 group due to reduced duration of early nymphal stages. Adult longevity and wing form pattern in one insect rearing density were not different between them. Interestingly, number of progenies of 8H-1 was three times higher than that of 8L-1 in spite of similar adult longevity.
In the future, more detailed study is required to find the actual presence or absence of genetic variation of planthoppers in RSV transmission ability in nature. For that, it is necessary to survey its distribution, to develop genetic markers distinguishing variants for accurate forecasting and fast measures, and finally to understand physiological mechanisms on the variation in RSV transmission ability of SBPH in interaction among rice plant, virus, SBPH, and environmental factors.

목차 Contents

• 제 출 문 ... 1
• 요 약 문 ... 2
• SUMMARY ... 4
• 목 차 ... 6
• 제 1 장 서 론 ... 7
• 제 1 절 연구의 배경 ... 7
• 제 2 절 연구의 범위와 목적 ... 7
• 제 2 장 국내외 기술개발 현황 ... 10
• 제 3 장 연구개발수행 내용 및 결과 ... 14
• 제 1 절 아·태지역 이동성 병해충 돌발 대응 국제협력 네트워크 구축 ... 14
• 제 2 절 애멸구의 RSV 매개능력 다양성 연구 ... 30
• 제 3 절 아․태지역 신문제 주요 벼 바이러스병 정보교류 ... 37
• 제 4 절 이동성 병해충 실시간 광역이동모델 개발 및 기술정보 교류 ... 42
• 제 4 장 연구개발목표 달성도 및 대외기여도 ... 54
• 제 1 절 목표대비 달성도 ... 54
• 제 2 절 정량적 성과 ... 55
• 제 5 장 연구개발결과의 활용계획 ... 60
• 제 6 장 연구개발과정에서 수집한 해외과학기술정보 ... 61
• 제 7 장 중요 변동사항 ... 63
• 제 8 장 국가과학기술종합정보시스템에 등록한 연구장비 현황 ... 61
• 제 9 장 참고문헌 ... 64
• 끝페이지 ... 72