식물추출액으로부터 종자의 발아를 억제하는 활성을 탐색하기 위해 식물체의 추출부위 및 용매를 달리한 420종의 추출액으로 상추와 잡초종자를 대상으로 발아시험을 수행하였다. 420종의 식물추출액을 1,000 ㎎ㆍL^(-1) 농도로 제조하여 상추종자에 처리한 결과 발아와 유묘생장을 강하게 억제하는 추출액 중 멍석딸기(R. parvifolius), 상엽(M. alba), 초과(A. tsaoko), 접시꽃(A. rosea), 산부추(A. thunbergii) 및 고본(A.tenuissima) 등 6종을 선발하였다. 이들 추출액이 상추종자의 발아를 50% 억제하는 농도(GI50)는 멍석딸기 726, 상엽 644, 초과 700, 접시꽃 715, 산부추 756 및 고본 720㎎ㆍL^(-1)였다. 6종의 식물추출액을 잡초종자에 처리한 결과 피(E. crusgalli)에는 접시꽃 추출액(GI50: 826mg·L?1)이, 비름(A. mangostanus)에는 고본 추출액(GI50: 717㎎ㆍL^(-1))이, 쇠비름(P. oleracea)에는 상엽추출액(GI50: 510㎎ㆍL^(-1))이 가장 억제활성이 강하였고, 바랭이(D. sanguinalis)는 6종 추출액 모두에서 GI50이 1,000㎎ㆍL^(-1)보다 높았다. 본 실험의 결과는 식물추출액으로부터 선택적으로 잡초의 발아를 억제하는 물질의 개발이 가능함을 시사해 주고 있다.
식물추출액으로부터 종자의 발아를 억제하는 활성을 탐색하기 위해 식물체의 추출부위 및 용매를 달리한 420종의 추출액으로 상추와 잡초종자를 대상으로 발아시험을 수행하였다. 420종의 식물추출액을 1,000 ㎎ㆍL^(-1) 농도로 제조하여 상추종자에 처리한 결과 발아와 유묘생장을 강하게 억제하는 추출액 중 멍석딸기(R. parvifolius), 상엽(M. alba), 초과(A. tsaoko), 접시꽃(A. rosea), 산부추(A. thunbergii) 및 고본(A.tenuissima) 등 6종을 선발하였다. 이들 추출액이 상추종자의 발아를 50% 억제하는 농도(GI50)는 멍석딸기 726, 상엽 644, 초과 700, 접시꽃 715, 산부추 756 및 고본 720㎎ㆍL^(-1)였다. 6종의 식물추출액을 잡초종자에 처리한 결과 피(E. crusgalli)에는 접시꽃 추출액(GI50: 826mg·L?1)이, 비름(A. mangostanus)에는 고본 추출액(GI50: 717㎎ㆍL^(-1))이, 쇠비름(P. oleracea)에는 상엽추출액(GI50: 510㎎ㆍL^(-1))이 가장 억제활성이 강하였고, 바랭이(D. sanguinalis)는 6종 추출액 모두에서 GI50이 1,000㎎ㆍL^(-1)보다 높았다. 본 실험의 결과는 식물추출액으로부터 선택적으로 잡초의 발아를 억제하는 물질의 개발이 가능함을 시사해 주고 있다.
Effects of plant-extracts from 420 different parts and/or species of plants, on the seed germination and seedling growth of lettuce and several weed species were determined. Out of 420 plant-extracts screened, six extracts such as Rubus parvifolius(R.p), Morus alba(M.a), Amomum tsaoko(A.t), Althaea...
Effects of plant-extracts from 420 different parts and/or species of plants, on the seed germination and seedling growth of lettuce and several weed species were determined. Out of 420 plant-extracts screened, six extracts such as Rubus parvifolius(R.p), Morus alba(M.a), Amomum tsaoko(A.t), Althaea rosea(A.r), Allium thunbergii(A.h) and Angelica tenuissima(A.e) were selected as potential extracts showing strong inhibitory activity of seed germination. Lettuce seeds treated with those six selected plant-extracts showed less than 10% of germination at the concentration of 1,000㎎ㆍL^(-1) treatment, where as those of untreated control showed 87% seed germination. 50% germination inhibitory concentration(GI50) of lettuce seeds treated with extracts of R.p, M.a, A.t, A.r, A.h and A.e were 726, 644, 700, 715, 756 and 720㎎ㆍL^(-1), respectively. Germination of weed seeds also inhibited by the extracts of six selected plant-extracts. GI50 of Echinochloa crusgalli seeds by A.r-extract was 826㎎ㆍL^(-1), that of Amaranthus mangostanus seeds by A.eextract was 717㎎ㆍL^(-1), that of Portulaca oleracea seeds by M.a-extract was 510㎎ㆍL^(-1), where as that of D. sanguinalis seeds was higher than 1,000㎎ㆍL^(-1) regardless of species of plant extracts. These results suggested that wild plants could be the potential source of selective herbicidal agent.
Effects of plant-extracts from 420 different parts and/or species of plants, on the seed germination and seedling growth of lettuce and several weed species were determined. Out of 420 plant-extracts screened, six extracts such as Rubus parvifolius(R.p), Morus alba(M.a), Amomum tsaoko(A.t), Althaea rosea(A.r), Allium thunbergii(A.h) and Angelica tenuissima(A.e) were selected as potential extracts showing strong inhibitory activity of seed germination. Lettuce seeds treated with those six selected plant-extracts showed less than 10% of germination at the concentration of 1,000㎎ㆍL^(-1) treatment, where as those of untreated control showed 87% seed germination. 50% germination inhibitory concentration(GI50) of lettuce seeds treated with extracts of R.p, M.a, A.t, A.r, A.h and A.e were 726, 644, 700, 715, 756 and 720㎎ㆍL^(-1), respectively. Germination of weed seeds also inhibited by the extracts of six selected plant-extracts. GI50 of Echinochloa crusgalli seeds by A.r-extract was 826㎎ㆍL^(-1), that of Amaranthus mangostanus seeds by A.eextract was 717㎎ㆍL^(-1), that of Portulaca oleracea seeds by M.a-extract was 510㎎ㆍL^(-1), where as that of D. sanguinalis seeds was higher than 1,000㎎ㆍL^(-1) regardless of species of plant extracts. These results suggested that wild plants could be the potential source of selective herbicidal agent.
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