Rapid diagnosis of imazapic & imazapyr resistance by using bioassays in Clearfield® Production System, Malaysia

F. S M Bajrai, Ismail Sahid, Khairiatul Mardiana Jansar

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

The resistance of weedy rice biotypes toward OnDuty™WG has been reported in Clearfield® MR 220 CL1 and MR 220 CL2 types of paddy. The purpose of this study was to adopt a rapid method to evaluate the resistance of bioassay species towards imazapic + imazapyr in different stages of plant development (seeds and seedlings). A series of OnDuty™WG concentrations from 0 to 300 g ai ha-1 were studied on the growth of rice cultivar MR263 (a susceptible species) as the bioassay species. The experiments were done in three replications with Complete Randomized Block Design (CRBD). From this study, the concentration of herbicide required to reduce coleoptiles length, root length and fresh weight in seed bioassay by 50% were 0.63, 0.33 and 3.60 g ai ha-1 respectively. Meanwhile, for seedling stage bioassay, the concentration of herbicide required to reduce coleoptiles length, root length and fresh weight by 50% were 0.03, 1.23 and 0.99 g ai ha-1 respectively. It is important to note that all growth parameters were concentration dependent and a total growth inhibition occurred in all parameters at high doses. It was proven that MR263 rice cultivar was not resistance towards imazapic + imazapyr and further experiments on other rice cultivars are recommended so that the most suitable cultivars will be selected in rice cultivation.

Original languageEnglish
Title of host publication2015 UKM FST Postgraduate Colloquium: Proceedings of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology 2015 Postgraduate Colloquium
PublisherAmerican Institute of Physics Inc.
Volume1678
ISBN (Electronic)9780735413252
DOIs
Publication statusPublished - 25 Sep 2015
Event2015 Postgraduate Colloquium of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology, UKM FST 2015 - Selangor, Malaysia
Duration: 15 Apr 201516 Apr 2015

Other

Other2015 Postgraduate Colloquium of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology, UKM FST 2015
CountryMalaysia
CitySelangor
Period15/4/1516/4/15

Fingerprint

Malaysia
bioassay
rice
herbicides
seeds
dosage

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Bajrai, F. S. M., Sahid, I., & Jansar, K. M. (2015). Rapid diagnosis of imazapic & imazapyr resistance by using bioassays in Clearfield® Production System, Malaysia. In 2015 UKM FST Postgraduate Colloquium: Proceedings of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology 2015 Postgraduate Colloquium (Vol. 1678). [020008] American Institute of Physics Inc.. https://doi.org/10.1063/1.4931193

Rapid diagnosis of imazapic & imazapyr resistance by using bioassays in Clearfield® Production System, Malaysia. / Bajrai, F. S M; Sahid, Ismail; Jansar, Khairiatul Mardiana.

2015 UKM FST Postgraduate Colloquium: Proceedings of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology 2015 Postgraduate Colloquium. Vol. 1678 American Institute of Physics Inc., 2015. 020008.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Bajrai, FSM, Sahid, I & Jansar, KM 2015, Rapid diagnosis of imazapic & imazapyr resistance by using bioassays in Clearfield® Production System, Malaysia. in 2015 UKM FST Postgraduate Colloquium: Proceedings of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology 2015 Postgraduate Colloquium. vol. 1678, 020008, American Institute of Physics Inc., 2015 Postgraduate Colloquium of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology, UKM FST 2015, Selangor, Malaysia, 15/4/15. https://doi.org/10.1063/1.4931193
Bajrai FSM, Sahid I, Jansar KM. Rapid diagnosis of imazapic & imazapyr resistance by using bioassays in Clearfield® Production System, Malaysia. In 2015 UKM FST Postgraduate Colloquium: Proceedings of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology 2015 Postgraduate Colloquium. Vol. 1678. American Institute of Physics Inc. 2015. 020008 https://doi.org/10.1063/1.4931193
Bajrai, F. S M ; Sahid, Ismail ; Jansar, Khairiatul Mardiana. / Rapid diagnosis of imazapic & imazapyr resistance by using bioassays in Clearfield® Production System, Malaysia. 2015 UKM FST Postgraduate Colloquium: Proceedings of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology 2015 Postgraduate Colloquium. Vol. 1678 American Institute of Physics Inc., 2015.
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