Mechanism of paraquat resistance in crassocephalum crepidioides (Benth.) S. moore during immature stage
The mechanism of paraquat resistance in Crassocephalum crepidioides at the six-leaf stage was investigated. The extractable paraquat was not metabolized fly the leaf tissue in the resistant (R) and susceptible (S) biotypes. Therefore, differential metabolism does not appear to play a role in the m...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Universiti Putra Malaysia Press
2004
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| Online Access: | http://psasir.upm.edu.my/id/eprint/3551/1/Mechanism_of_Paraquat_Resistance_in_Crassocephalum_crepidioides.pdf |
| _version_ | 1825943509567275008 |
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| author | B. S., Ismail T. S., Chuah H. H., Khatijah |
| author_facet | B. S., Ismail T. S., Chuah H. H., Khatijah |
| author_sort | B. S., Ismail |
| collection | UPM |
| description | The mechanism of paraquat resistance in Crassocephalum crepidioides at the six-leaf stage was investigated.
The extractable paraquat was not metabolized fly the leaf tissue in the resistant (R) and susceptible (S) biotypes.
Therefore, differential metabolism does not appear to play a role in the mechanism of resistance. The S biotype
absorbed 44% more 14Gparaquat than the R biotype. However, more than 98% of the absorbed 14G paraquat remained on the treated leaf of both biotypes. The difference in absorption had a negative correlation with the amount of epicuticular wax as well as the cuticle of leaf surfaces in both biotypes. The results of this study suggest that differential absorption may be a factor that accounts for resistance to paraquat at the six-leaf stage. |
| first_indexed | 2024-03-06T07:01:27Z |
| format | Article |
| id | upm.eprints-3551 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T07:01:27Z |
| publishDate | 2004 |
| publisher | Universiti Putra Malaysia Press |
| record_format | dspace |
| spelling | upm.eprints-35512015-09-11T03:47:19Z http://psasir.upm.edu.my/id/eprint/3551/ Mechanism of paraquat resistance in crassocephalum crepidioides (Benth.) S. moore during immature stage B. S., Ismail T. S., Chuah H. H., Khatijah The mechanism of paraquat resistance in Crassocephalum crepidioides at the six-leaf stage was investigated. The extractable paraquat was not metabolized fly the leaf tissue in the resistant (R) and susceptible (S) biotypes. Therefore, differential metabolism does not appear to play a role in the mechanism of resistance. The S biotype absorbed 44% more 14Gparaquat than the R biotype. However, more than 98% of the absorbed 14G paraquat remained on the treated leaf of both biotypes. The difference in absorption had a negative correlation with the amount of epicuticular wax as well as the cuticle of leaf surfaces in both biotypes. The results of this study suggest that differential absorption may be a factor that accounts for resistance to paraquat at the six-leaf stage. Universiti Putra Malaysia Press 2004 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/3551/1/Mechanism_of_Paraquat_Resistance_in_Crassocephalum_crepidioides.pdf B. S., Ismail and T. S., Chuah and H. H., Khatijah (2004) Mechanism of paraquat resistance in crassocephalum crepidioides (Benth.) S. moore during immature stage. Pertanika Journal of Tropical Agricultural Science, 27 (1). pp. 1-10. ISSN 1511-3701 http://www.pertanika.upm.edu.my/Pertanika%20PAPERS/JTAS%20Vol.%2027%20(1)%20Apr.%202004/01%20JTAS%20Vol.27%20(1)%202004%20(Pg%201-10).pdf |
| spellingShingle | B. S., Ismail T. S., Chuah H. H., Khatijah Mechanism of paraquat resistance in crassocephalum crepidioides (Benth.) S. moore during immature stage |
| title | Mechanism of paraquat resistance in crassocephalum crepidioides (Benth.) S. moore during immature stage |
| title_full | Mechanism of paraquat resistance in crassocephalum crepidioides (Benth.) S. moore during immature stage |
| title_fullStr | Mechanism of paraquat resistance in crassocephalum crepidioides (Benth.) S. moore during immature stage |
| title_full_unstemmed | Mechanism of paraquat resistance in crassocephalum crepidioides (Benth.) S. moore during immature stage |
| title_short | Mechanism of paraquat resistance in crassocephalum crepidioides (Benth.) S. moore during immature stage |
| title_sort | mechanism of paraquat resistance in crassocephalum crepidioides benth s moore during immature stage |
| url | http://psasir.upm.edu.my/id/eprint/3551/1/Mechanism_of_Paraquat_Resistance_in_Crassocephalum_crepidioides.pdf |
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