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이왕휴 ( Wang Hyu Lee ),김주희 ( Ju Hee Kim ),최인영 ( In Young Choi ) 전북대학교 농업과학기술연구소 2008 농업생명과학연구 Vol.39 No.2
작물은 많은 병원으로부터 침입을 당하고, 농민은 그 침입에 대한 방제를 위해 여러 가지 방법을 동원하게 된다. 그 안에는 여러 방제 방법이 있으며, 어떤 방제 방법이나 장점이 있으면 단점이 있기 마련이다. 생물방제는 화학방제보다 먹 거리 생산에는 안전하다고 한다. 생물방제는 화학방제가 어려운 저항성 병, 해충 방제에 효과가 있으며, 전류문제가 없는 장점이 있다. 토양에서는 작물지하부에 존속하며, 유기농업에 필수사항이다. 그러나 가격이 비싸고, 농약에 비해 효과가 낮으며 불균일하다. 또 사용적기를 놓치면 효과가 낮아지는 단점이 있다. 그리고 생물제제의 안전성에 관한 연구가 다른 선진국에 비해 적다. 따라서 모든 방제 프로그램에 있는 것처럼 우리나라도 생물제제의 안전성에 관한 가이드라인 또한 필요하다고 생각된다. 결론적으로 어떤 방제법이나 단점이 있기 때문에 한 가지 방제에만 의존하지 말고, 일정피해수준 이상으로 발생했을 때 종합방제나 종합병해충관리에 힘써야만 우리나라 농산물을 자급자족 할 수 있을 것이며, 또한 먹 거리 생산에 안전을 획득 할 수 있을 것이다. Crop plants are infected by various pathogens, and farmers apply many control measures to counter the invasions. Among these tactics, various control methods exist with their own distinctive advantages and disadvantages. It is a proven fact that biological control is safer than to chemical control in the production of food products. As a benefit of biocontrol there are no residual problems, as it has an alternative effect on the resistant pathogens or insect pest which tend to resist chemical control after numerous applications. If treatment takes place in the seeds of plants, the effects remain at the rhizosphere as long as the plant survives. It is an essential aspect of organic agriculture. However, biocontrol is expensive and less effective and disproportionate than chemical control. Moreover, the effect of biocontrol is degraded if the proper application period is missed and little research has been conducted on the safety of the biological agents in the other advanced countries. Therefore, just like other control programs, a safety guide line for using bio-agents in biocontrol programs is also necessary in Korea. Conclusively, since under current circumstances where the self sufficient production of agricultural products has not yet been achieved, a combination of control tactics, such as the integrated control and IPM (integrated pest management) have to be applied without relying on one individual control method to achieve safety in the production of our food products.
수확후 배 푸른곰팡이병을 일으키는 Penicillium속의 종류 및 특성
김주희,이왕휴,정성수,최정식,류정,최영근,Kim, Ju-Hee,Lee, Wang-Hyu,Cheong, Seong-Soo,Choi, Joung-Sik,Ryu, Jeong,Choi, Yeong-Geun 한국식물병리학회 2002 식물병연구 Vol.8 No.2
수확 후 피해를 주는 Penicillium속의 병원체를 분리 동정하기 위하여 여러 특성을 조사하였다. 저장 중 배에서 분리한 198균주는 상처 접종과 무상 접종에서 병반을 형성하여 병원성이 있었으며, 균총 크기와 형태, 색, 배지뒷면 색소와 포자형태 등의 특성에 따라 15개 그룹으로 나눌 수 있었다. 분리한 균주들은 배양·형태적·생리적 특성에 따라 P. expansum, P. solitum, P. crustosum 등 3종으로 동정되었다. 분리된 균주들의 병원성 검정 결과 저온에서 상처접종이 무상접종 보다 병원성이 강하게 나타났으며 P. expansum이 저장 배 과실에 대해 가장 병원성이 강하였고, P. solitum과 P. crustosum은 약한 편이었다. This study was carried out to identify the causal pathogens and investigated the characteristics of Penicillium spp. isolated from postharvest decay of pear. One hundred and ninety eight Penicillium spp. were isolated from infected pear fruits. The lesions were formed when the isolated pathogen were inoculated into the wounds and unwounds of pear fruit. Total isolates were classified into 15 groups by the size, color, pigment of colony and shape of conidia. These isolates were identified to be P.expansum, P.solitum, and P.crustosum according to the types of morphological, cultural and physiological characteristics. The pathogenicity was higher in wound inoculation at low temperature than unwound one. This result confirmed that wound promoted the disease appearance. P.expansum was appeared to have the most strong virulence, whereas P.solitum and P.crustosum were classified as weak virulent species by pathogenicity test on pear fruits.
송진주 ( Jin Ju Song ),이왕휴 ( Wang Hyu Lee ),심형권 ( Hyeong Kwon Shim ) 전북대학교 농업과학기술연구소 2010 농업생명과학연구 Vol.41 No.1
The fungal pathogens of rice ear blight were isolated from the samples collected in Jeallabukdo, Jeallanamdo, Gyeongsangbukdo and Gyeongsangnamdo from 2006 to 2007. The isolation of pathogen were individually surveyed and tested by pathogenicity. The occurrence of rice ear blight was the highest in Gyungbuk province in both surveyed years. There were some different rate of rice ear blight in Jeonnam, Gyeongnam, Jeonbuk in 2006, but found to be no difference among the province in 2007. Fusarium graminearum, Fusarium moniliforme, Pyricularia oryzae, Bipolaris oryzae, Nigrospora oryzae, and Curvularia, sp. were isolated from seed coat. F. graminearum, F. moniliforme, P. oryzae, B. oryzae were also isolated only from endosperm. However, F. graminearum, P. oryzae were isolated from embryo. As the results of this experiment. F. graminearum was confirmed to be present in seed coat, endosperm and embryo. In the pathogenicity test, F. graminearum, B. oryzae caused discolotation of seeds did not show any difference compared with these of control.