Genetic Relationship and Allozyme Expression of Insecticide Susceptible and Resistant Helopeltis theivora Populations from Peninsular Malaysia

Md Latip, Siti Noor Hajjar and Muhamad, Irita and Tan, Soon Guan (2005) Genetic Relationship and Allozyme Expression of Insecticide Susceptible and Resistant Helopeltis theivora Populations from Peninsular Malaysia. Pertanika Journal of Tropical Agricultural Science, 28 (1). pp. 59-65. ISSN 1511-3701

[img] PDF
1974Kb

Abstract

Helopeltis theivora is a known pest of cocoa and tea in Malaysia. Several mechanisms of insecticide resistance have been proposed such as reduction in the sensitivity of target sites, metabolic detoxification of pesticides and decreased penetration or translocation of pesticides. Polyacrylamide gel electrophoresis (PAGE) was used to determine the metabolic enzymes involved in the development of resistance in Helopeltis theivora. Adults of Helopeltis theivora were collected from three geographical locations namely Bukit Cheeding (Banting, Selangor), Sg. Palas (Cameron Highlands) and MARDI (Cameron Highlands, Pahang). In total, 25 enzymes were screened for polymorphisms and 8 enzymes were detectable in H. theivora. The dendogram resulting from the cluster analysis grouped the infrequently sprayed Banting and the MARDI populations together while the intensively sprayed Sg. Palas population clustered by itself.

Item Type:Article
Keyword:Allozyme, H. theivora, PAGE, insecticide resistance
Publisher:Universiti Putra Malaysia Press
ID Code:3599
Deposited By: Farhana Yusof
Deposited On:30 Nov 2009 05:00
Last Modified:27 May 2013 07:09

Repository Staff Only: item control page


Universiti Putra Malaysia Institutional Repository

Universiti Putra Malaysia Institutional Repository is an on-line digital archive that serves as a central collection and storage of scientific information and research at the Universiti Putra Malaysia.

Currently, the collections deposited in the IR consists of Master and PhD theses, Master and PhD Project Report, Journal Articles, Journal Bulletins, Conference Papers, UPM News, Newspaper Cuttings, Patents and Inaugural Lectures.

As the policy of the university does not permit users to view thesis in full text, access is only given to the first 24 pages only.