Abstract
본 연구를 통해 토양 방선균 유래 제초활성물질을 대상으로 제초제로서의 적용 가능성 여부를 확인하기 위하여 수행되었다. 잡초에 대한 발아와 경엽처리에 대한 약효시험 결과, 종자 발아는 100 ppm 수준으로 처리하고 경엽에는 2,000 ppm 수준으로 처리해야 저해효과를 나타냈다. 작물에 대한 시험 결과, 오이는 발아억제가 이루어지지 않았으며 벼는 발아와 생육 모두 50% 내외의 저해를 보였다. 그 외의 모든 시험 작물 초종은 처리 농도에 따른 민감한 반응을 보였다. 즉 토양방선균으로부터 발굴한 천연제초활성물질은 선택성 제초제로의 개발은 어려워 보이나 비선택성 제초제로의 개발은 가능할 것으로 보인다. 한편 처리방법에 따른 농도별 시험 결과, 패트리디쉬에서 실험의 경우 모든 잡초종이 농도에 민감히 반응하였으며, $GR_{50}$값은 1-2 ppm 정도를 보였다. 그리고 토양처리 효과에 따른 발아억제 및 생육저해 효과는 쌍떡잎식물에서 보다 민감한 반응을 보였고, 털비름의 경우 1,000 ppm에서도 85%의 생육저해를 보였다. 경엽처리에 따른 생육저해 조사시 2,000 ppm에서 피는 고사하지 않았으나 나머지 초종은 모두 고사하였고, 특히 털비름은 6.25 ppm의 농도에서도 고사하였다. 경엽처리에 따른 대표적인 반응으로 바랭이는 잎의 꼬임현상을 나타냈고, 어저귀는 잎이 변색되었다. 토양처리는 그 효과가 경미하고 일정기간 경과후에 재생되어 방제효과가 부족하였으며, 경엽처리의 경우 피를 제외한 잡초종등이 2,000 ppm에서 방제가 가능할 것으로 보인다. 또한 모든 결과를 종합 할 때 화본과잡초 보다 광엽잡초에서 민감한 발아억제 및 생육저해 효과를 볼 수 있었다. 따라서 토양 방선균 유래 제초활성 후보물질은 비선택성 경엽처리제로서의 개발이 상대적으로 유망할것으로 판단되었다. 한편 화본과 잡초에 대한 저해 효과가 부족함으로 추후 다른 제제와 혼합함으로써 화본과 잡초도 동시에 방제할 수 있는 기술의 개발이 필요할 것이다. This study was conducted to evaluate the effect of herbicidin, new natural herbicidal substances, derived from soil actinomycetes Streptomyces scopuliridis. Several weed species were subjected to examine the germination inhibition and herbicidal activity at the concentration from 100 to 2,000 ppm. There was no selectivity in germination inhibition and herbicidal activity against crops. Germination of Echinochloa oryzoides, Digitaria ciliaris, Abutilon theophrasti and Amaranthus retroflexus was inhibited completely when 7.81 ppm of extract was treated in petri dish. Pre-emergence application of herbicidin in soil condition showed low inhibition against weeds. However, post application of herbicidin in green house resulted in the necrosis of weeds at the concentration of 2,000 ppm. A. retroflexus was sensitive to herbicidin at the low concentration of 62.5 ppm, whereas E. oryzoides was tolerant to lower concentration of herbicidin until it became withered at the concentration of 2,000 ppm. In conclusion, herbicidal substances derived from S. scopuliridis herbicidin, which is consisted with herbicidin A and B, have dominant effect on germination and growth inhibition. On the other hand, herbicidin was insufficient to control gramineous weeds. In future, it will be needed to develop the combination of herbicidin with other herbicide or compounds to control gramineous weeds as well.
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Claims 10
Claim · model-written summary
Herbicidin at 7.81 ppm of extract inhibited germination of Echinochloa oryzoides completely in petri dish tests.
- Taxon
- Echinochloa oryzoidesEchinochloa oryzoidese1
- Treatment
- 7.81 ppm of extracte1
- Outcome
- Germinatione1
- Direction
- inhibitede1
- Value
- 7.81 ppme1
- Qualifier
- completelye1
- Setting
- petri dishe1
Not reportedComparator
Verbatim
e1“Germination of Echinochloa oryzoides, Digitaria ciliaris, Abutilon theophrasti and Amaranthus retroflexus was inhibited completely when 7.81 ppm of extract was treated in petri dish”
Claim · model-written summary
Herbicidin at 7.81 ppm of extract inhibited germination of Digitaria ciliaris completely in petri dish tests.
- Taxon
- Digitaria ciliaris
Digitaria ciliarise1 - Treatment
- 7.81 ppm of extracte1
- Outcome
- Germinatione1
- Direction
- inhibitede1
- Value
- 7.81 ppme1
- Qualifier
- completelye1
- Setting
- petri dishe1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Germination of Echinochloa oryzoides, Digitaria ciliaris, Abutilon theophrasti and Amaranthus retroflexus was inhibited completely when 7.81 ppm of extract was treated in petri dish”
Claim · model-written summary
Herbicidin at 7.81 ppm of extract inhibited germination of Abutilon theophrasti completely in petri dish tests.
- Taxon
- Abutilon theophrasti
Abutilon theophrastie1 - Treatment
- 7.81 ppm of extracte1
- Outcome
- Germinatione1
- Direction
- inhibitede1
- Value
- 7.81 ppme1
- Qualifier
- completelye1
- Setting
- petri dishe1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Germination of Echinochloa oryzoides, Digitaria ciliaris, Abutilon theophrasti and Amaranthus retroflexus was inhibited completely when 7.81 ppm of extract was treated in petri dish”
Claim · model-written summary
Herbicidin at 7.81 ppm of extract inhibited germination of Amaranthus retroflexus completely in petri dish tests.
- Taxon
- Amaranthus retroflexus
Amaranthus retroflexuse1 - Treatment
- 7.81 ppm of extracte1
- Outcome
- Germinatione1
- Direction
- inhibitede1
- Value
- 7.81 ppme1
- Qualifier
- completelye1
- Setting
- petri dishe1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Germination of Echinochloa oryzoides, Digitaria ciliaris, Abutilon theophrasti and Amaranthus retroflexus was inhibited completely when 7.81 ppm of extract was treated in petri dish”
Claim · model-written summary
Pre-emergence application of herbicidin in soil showed low inhibition of weeds.
- Taxon
- weedse2
- Treatment
- Pre-emergence application of herbicidin in soile2
- Outcome
- inhibitione2
- Direction
- lowe2
Not reportedComparator
Verbatim
e2“Pre-emergence application of herbicidin in soil condition showed low inhibition against weeds”
Claim · model-written summary
Post-emergence application of herbicidin in a greenhouse caused necrosis of weeds at 2,000 ppm.
- Taxon
- weedse3
- Treatment
- post application of herbicidine3
- Outcome
- necrosise3
- Value
- 2,000 ppme3
- Setting
- green housee3
Not reportedComparatorDirection
Verbatim
e3“post application of herbicidin in green house resulted in the necrosis of weeds at the concentration of 2,000 ppm”
Claim · model-written summary
Amaranthus retroflexus was sensitive to herbicidin at 62.5 ppm.
- Taxon
- A. retroflexusAmaranthus retroflexuse4
- Treatment
- herbicidine4
- Outcome
- sensitivee4
- Value
- 62.5 ppme4
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“A. retroflexus was sensitive to herbicidin at the low concentration of 62.5 ppm”
Claim · model-written summary
Echinochloa oryzoides was tolerant to lower herbicidin concentrations and withered at 2,000 ppm.
- Taxon
- E. oryzoidesEchinochloa oryzoidese5
- Treatment
- herbicidine5
- Outcome
- witherede5
- Value
- 2,000 ppme5
- Qualifier
- tolerant to lower concentration of herbicidine5
Not reportedComparatorDirection
Verbatim
e5“E. oryzoides was tolerant to lower concentration of herbicidin until it became withered at the concentration of 2,000 ppm”
Claim · model-written summary
Herbicidin showed no selectivity between weeds and crops in germination inhibition and herbicidal activity.
Verbatim
e7“There was no selectivity in germination inhibition and herbicidal activity against crops”
Claim · model-written summary
Herbicidal substances from S. scopuliridis herbicidin have a dominant effect on germination and growth inhibition of weed species.
- Taxon
- weed speciese0
- Treatment
- herbicidal substances derived from S. scopuliridis herbicidine1
- Outcome
- germination and growth inhibitione1
Not reportedDirection
Verbatim
e0“Several weed species were subjected to examine the germination inhibition and herbicidal activity at the concentration from 100 to 2,000 ppm”
e1“In conclusion, herbicidal substances derived from S. scopuliridis herbicidin, which is consisted with herbicidin A and B, have dominant effect on germination and growth inhibition”
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See all 39 papers →botanical · growth · Echinochloa oryzoides (early barnyard grass)Results agree
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- positive
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Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.