유전자변형 벼로부터 일어나는 화분비산의 시공간적 특성

• 영문명: Temporal and Spatial Characteristics in the Pollen Flow of Living Modified Rice
• 발행기관: 한국작물학회
• 저자명: 안주희(Joo Hee An) 조강현(Kang-Hyun Cho)
• 간행물 정보: 『한국작물학회지』제54권 제2호, 210~217쪽, 전체 8쪽
• 주제분류: 농수해양 > 기타농수해양
• 파일형태: PDF
• 발행일자: 2009.06.30

영문 초록

Pollen flow is one of the essential com-ponents in the ecological risk assessment of transgenic crops, because pollen can act as a vehicle to disseminate trans-ferred alien genes. Pollen flow pattern of a cultivated rice variety and Living modified (LM) rice was studied at diurnal and distance changes under field. We measured airborne pollen density at the distances of -1, 0.5, 0, 1, 2, 3, 4, 5, 7, 9, 11 and 13 m from rice cultivation and recorded the direction and speed of wind using weather station in the conventional rice paddy field during the flowering period of rice. Diurnal changes in pollen density were observed as a peak between 10:00 to 13:00 hr. The density of airborne rice pollen geometrically decreased with the increase of distance from pollen sources. It is therefore necessary to carry out a detailed investigation of pollen flow of a particular species, where ecological risk assessment requires an accurate estimation of pollen flow including both distance and intensity of pollen dispersal. The rice pollen flow was significantly influenced by weather conditions, particularly by wind direction and speed. The precise determination of the local wind conditions at flowering time therefore appears to be of primary importance for setting up suitable isolation distance from transgenic rice in the field.

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gene flow pollen rice Oriza sativa risk assessment