지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2005.6
- 수록면
- 87 - 92 (6page)
이용수
초록· 키워드
오류제보하기
The structural differences between healthy and diseased panicle necks caused by Pyricularia oryzae were observed using electron-microscope. In the diseased panicle neck, the infection hyphae of the rice blast pathogen grew through the sclerenchymatous fiber tissue and reached to the central internal lacuna. Since the pathogen grew through the sclerenchymatous fiber tissues, the vascular bundle composed with xylem and phloem had been destroyed and finally the nutrients from the leaf and stem were not able to be transported into the grains. Infection of panicle base by the blast pathogen until 20 days after heading caused more than 50% of yield loss in both Jinmibyeo and Chucheongbyeo. There was a positive correlation between incidence of the panicle blast and rice yield losses. The regression equations between incidence of the panicle blast and yield losses were y=-3.61+496.7(R²=0.70) in Jinmibyeo and y=-3.93+520.2(R²=0.82) in Juanbyeo. The panicle blast caused deterioration of grain quality. Healthy grain rate was reduced by increase of panicle blast infection.
목차
Changes of internal structure of diseased panicle neck caused by rice panicle blast
Estimation of rice yield loss according to panicle blast occurrence time in the field
Estimation of rice yield loss and quality according to panicle blast severity in the field
References
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UCI(KEPA) : I410-ECN-0101-2009-481-017570363