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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...

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Main Authors: B. S., Ismail, T. S., Chuah, H. H., Khatijah
Format: Article
Language:English
Published: Universiti Putra Malaysia Press 2004
Online Access:http://psasir.upm.edu.my/id/eprint/3551/1/Mechanism_of_Paraquat_Resistance_in_Crassocephalum_crepidioides.pdf
http://psasir.upm.edu.my/id/eprint/3551/
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
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spelling my.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
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
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.
format Article
author B. S., Ismail
T. S., Chuah
H. H., Khatijah
spellingShingle B. S., Ismail
T. S., Chuah
H. H., Khatijah
Mechanism of paraquat resistance in crassocephalum crepidioides (Benth.) S. moore during immature stage
author_facet B. S., Ismail
T. S., Chuah
H. H., Khatijah
author_sort B. S., Ismail
title 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_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_sort mechanism of paraquat resistance in crassocephalum crepidioides (benth.) s. moore during immature stage
publisher Universiti Putra Malaysia Press
publishDate 2004
url http://psasir.upm.edu.my/id/eprint/3551/1/Mechanism_of_Paraquat_Resistance_in_Crassocephalum_crepidioides.pdf
http://psasir.upm.edu.my/id/eprint/3551/
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
_version_ 1643822644106100736
score 13.211869

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