Abstract
A series of laboratory and greenhouse experiments were conducted to find out the possibility of tissue culture and cell culture methods as a tool to study herbicidal behaviour and herbicide tolerance screening from 1985 to 1986 at the Yeongnam Crop Experiment Station. For dehulled-rice culture, pure agar medium was the most appropriate in rice growth campared to other media used for plant tissue culture method. All the media but the pure agar medium resulted in growth retardance by approximately 50% and this effect was more pronounced to root growth than shoot growth. Herbicidal phytotoxicity was enhanced under light condition for butachlor, 2.4-D, and propanil while this effect was reversed for DPX F-5384 and CGA 142464, respectively. And also, herbicides of butachlor, chlornitrofen, oxadiazon, and BAS-514 resulted in more phytotoxic effect when shoot and root of rice were exposed to herbicide than root exposure only while other used herbicides exhibited no significant difference between two exposure regimes. Similar response was obtained from Echinochloa crusgalli even though the degree of growth retardance was much greater. Particularly, butachlor, 2.4-D, chlornitrofen, oxadiaxon, pyrazolate and BAS-514 totally inhibited chlorophyll biosynthesis even at the single contact of root. Apparent cultivar differences to herbicide were observed at the young seedling culture method and dehulled rice cultivars were more tolerant in DPX F-5384, NC-311, pyrazolate and pyrazoxyfen, respectively. For derant than other types or rice cultivar in butachlor, pretilachlor, perfluidone and oxadiazon while Tongil-type rice cultivars were more tolerant in DPXF-5384, NC-311, Pyrazolate and Pyrazoxyfen, respectively. For dehulled rice culture, on the other hand, Japonica-type rice cultivar was less tolerant to herbicides of butachlor, propanil, chlornitrofen and oxadiazon that was reversed trend to young seedling culture test. Cultivar differences were also exhibited within same cultivar type. In general, relatively higher tolerant cultivars were Milyang 42, Cheongcheongbyeo, Samgangbyeo, Chilseoungbyeo for Tongil-type, Somjinbyeo for Japonica-type and IR50 for Indica-type, respectively. The response of callus growth showed similar to dehulled rice culture method in all herbicides regardless of property variables. However, concentration response was much sensitive in callus response. The concentration ranges of were appropriate to distinguish the difference between herbicides for E. crusgalli callus growth. Among used herbicides, BAS-514 was the most effective to E. crusgalli callus growth. Based on the above results, tissue culture method could be successfully used as a tool for studying herbicidal behaviour and tolerance screening to herbicide.
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Claims 18
Claim · model-written summary
Pure agar was the most appropriate medium for dehulled rice growth.
- Taxon
- rice
Oryza sativat0 - Treatment
- pure agar mediume0
- Outcome
- rice growthe0
- Direction
- most appropriatee0
- Comparator
- other media used for plant tissue culture methode0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice growth”
e0“For dehulled-rice culture, pure agar medium was the most appropriate in rice growth campared to other media used for plant tissue culture method”
Claim · model-written summary
Other media retarded rice growth by about 50%.
- Taxon
- riceOryza sativat0
- Treatment
- All the media but the pure agar mediume0
- Outcome
- growth retardancee0
- Direction
- retardancee0
- Value
- approximately 50%e0
- Comparator
- pure agar mediume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice growth”
e0“All the media but the pure agar medium resulted in growth retardance by approximately 50%”
Claim · model-written summary
Growth retardation was more pronounced in roots than shoots.
- Taxon
- riceOryza sativat0
- Organ / stage
- roote0
- Outcome
- root growthe0
- Direction
- more pronouncede0
- Comparator
- shoot growthe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice growth”
e0“this effect was more pronounced to root growth than shoot growth”
Claim · model-written summary
Light enhanced phytotoxicity for butachlor, 2.4-D and propanil.
- Taxon
- riceOryza sativat0
- Treatment
- light conditione0
- Outcome
- Herbicidal phytotoxicitye0
- Direction
- enhancede0
- Qualifier
- butachlor, 2.4-D, and propanile0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice growth”
e0“Herbicidal phytotoxicity was enhanced under light condition for butachlor, 2.4-D, and propanil”
Claim · model-written summary
Light reversed phytotoxicity response for DPX F-5384 and CGA 142464.
- Taxon
- riceOryza sativat0
- Treatment
- DPX F-5384 and CGA 142464e0
- Outcome
- this effecte0
- Direction
- reversede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice growth”
e0“this effect was reversed for DPX F-5384 and CGA 142464”
Claim · model-written summary
Shoot-and-root exposure produced more phytotoxicity than root-only exposure for four herbicides.
- Taxon
- riceOryza sativat0
- Treatment
- shoot and root of rice were exposed to herbicidee0
- Outcome
- phytotoxic effecte0
- Direction
- moree0
- Qualifier
- butachlor, chlornitrofen, oxadiazon, and BAS-514e0
- Comparator
- root exposure onlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice growth”
e0“butachlor, chlornitrofen, oxadiazon, and BAS-514 resulted in more phytotoxic effect when shoot and root of rice were exposed to herbicide than root exposure only”
Claim · model-written summary
Other herbicides showed no significant exposure-regime difference.
- Taxon
- riceOryza sativat0
- Treatment
- other used herbicidese0
- Outcome
- no significant differencee0
- Direction
- no significant differencee0
- Comparator
- two exposure regimese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice growth”
e0“other used herbicides exhibited no significant difference between two exposure regimes”
Claim · model-written summary
Echinochloa crusgalli responded similarly but with greater growth retardation.
- Taxon
- riceOryza sativat0
- Interactor
- Echinochloa crusgalli
Echinochloa crus-gallie0weed - Outcome
- growth retardancee0
- Direction
- much greatere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice growth”
e0“Similar response was obtained from Echinochloa crusgalli even though the degree of growth retardance was much greater”
Claim · model-written summary
Six herbicides completely inhibited chlorophyll biosynthesis after only root contact.
- Taxon
- riceOryza sativat0
- Organ / stage
- roote0
- Treatment
- butachlor, 2.4-D, chlornitrofen, oxadiaxon, pyrazolate and BAS-514e0
- Outcome
- chlorophyll biosynthesise0
- Direction
- totally inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice growth”
e0“butachlor, 2.4-D, chlornitrofen, oxadiaxon, pyrazolate and BAS-514 totally inhibited chlorophyll biosynthesis even at the single contact of root”
Claim · model-written summary
Young seedling culture revealed cultivar differences in herbicide tolerance.
- Taxon
- riceOryza sativat0
- Organ / stage
- young seedlinge0
- Outcome
- cultivar differences to herbicidee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice growth”
e0“Apparent cultivar differences to herbicide were observed at the young seedling culture method”
Claim · model-written summary
Tongil-type cultivars tolerated four named herbicides more.
- Taxon
- riceOryza sativat0
- Material
- Tongil-type rice cultivarse0
- Outcome
- tolerante0
- Direction
- moree0
- Qualifier
- DPXF-5384, NC-311, Pyrazolate and Pyrazoxyfene0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice growth”
e0“Tongil-type rice cultivars were more tolerant in DPXF-5384, NC-311, Pyrazolate and Pyrazoxyfen”
Claim · model-written summary
Japonica-type cultivars were less tolerant to four herbicides in dehulled rice culture.
- Taxon
- riceOryza sativat0
- Material
- Japonica-type rice cultivare0
- Outcome
- tolerante0
- Direction
- lesse0
- Qualifier
- butachlor, propanil, chlornitrofen and oxadiazone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice growth”
e0“For dehulled rice culture, on the other hand, Japonica-type rice cultivar was less tolerant to herbicides of butachlor, propanil, chlornitrofen and oxadiazon”
Claim · model-written summary
Herbicide tolerance differed within cultivar type.
- Taxon
- riceOryza sativat0
- Outcome
- Cultivar differencese0
- Qualifier
- within same cultivar typee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice growth”
e0“Cultivar differences were also exhibited within same cultivar type”
Claim · model-written summary
Named Tongil, Japonica and Indica cultivars were relatively tolerant.
- Taxon
- riceOryza sativat0
- Material
- Milyang 42e0
- Outcome
- higher tolerant cultivarse0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice growth”
e0“relatively higher tolerant cultivars were Milyang 42, Cheongcheongbyeo, Samgangbyeo, Chilseoungbyeo for Tongil-type, Somjinbyeo for Japonica-type and IR50 for Indica-type”
Claim · model-written summary
Callus growth responded similarly to dehulled rice across herbicides.
- Taxon
- riceOryza sativat0
- Outcome
- response of callus growthe0
- Direction
- similare0
- Comparator
- dehulled rice culture methode0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice growth”
e0“The response of callus growth showed similar to dehulled rice culture method in all herbicides regardless of property variables”
Claim · model-written summary
Callus was more sensitive to concentration.
- Taxon
- riceOryza sativat0
- Organ / stage
- calluse0
- Outcome
- concentration responsee0
- Direction
- much sensitivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice growth”
e0“concentration response was much sensitive in callus response”
Claim · model-written summary
BAS-514 most strongly affected Echinochloa crusgalli callus growth.
- Taxon
- riceOryza sativat0
- Treatment
- BAS-514e0
- Interactor
- E. crusgalliEchinochloa crus-gallie0weed
- Outcome
- E. crusgalli callus growthe0
- Direction
- most effectivee0
- Comparator
- used herbicidese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice growth”
e0“Among used herbicides, BAS-514 was the most effective to E. crusgalli callus growth”
Claim · model-written summary
Tissue culture could be used to study herbicide behavior and screen tolerance.
- Taxon
- riceOryza sativat0
- Outcome
- tolerance screening to herbicidee0
- Value
- successfullye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice growth”
e0“tissue culture method could be successfully used as a tool for studying herbicidal behaviour and tolerance screening to herbicide”
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See all 5 papers →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.