Screening for Sarawak Paddy Landraces with Resistance to Yellow Rice Stem Borer, Scirpophaga incertulas (Walker) (Lepidoptera: Crambidae)

Ling, Alvin Xian Rong and Yeo, Freddy Kuok San and Nur Najwa, Hamsein and Ting, Hieng Ming and Mogeret, Sidi and Wan Nurainie, Wan Ismail and Annebell Stphanie, Taji and Cheok, Yin Hui (2020) Screening for Sarawak Paddy Landraces with Resistance to Yellow Rice Stem Borer, Scirpophaga incertulas (Walker) (Lepidoptera: Crambidae). PERTANIKA Journal of Tropical Agricultural Science, 43 (4). pp. 491-502. ISSN 2231-8542

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The yellow rice stem borer, Scirpophaga incertulas (Walker) is a prevalent pest in paddy fields worldwide. In Sarawak, a survey on pest of paddy carried out from 2009 to 2011 covering 166 paddy fields revealed that rice stem borers caused 11.4% of total paddy damage. In order to reduce the damage, identifying resistance paddy variety is crucial. The objective of this study was to screen Sarawak paddy landraces with resistance to S. incertulas.Twelve Sarawak paddy landraces were selected randomly for this study. Antixenosis resistance screening was performed in aquariums (60 x 28 x 33 cm). Three replications of one-monthold seedlings were randomly arranged in aquarium and exposed to adult S. incertulas. The number and position of egg mass on each plant were recorded. Egg mass abnormalities were also observed. For antibiosis, rice culms of two-month old seedlings from each landrace were infestedwith larvae. The length of surviving larvae from five rice culms was measured. The experiment revealed variations in landraceof preference for ovipositing. Among the twelve Sarawak paddy landraces, Kanowit was more preferred by S. incertulas for ovipositing in comparison to other paddy landraces suggesting susceptibility towards the pest. Abaxial leaf surface was the preferred oviposition site. There was no clear antibiosis response of the paddy landraces towards S. incertulas larvae in this study. Keywords: Antibiosis, antixenosis, rice insect pest

Item Type: Article
Uncontrolled Keywords: Antibiosis, antixenosis, rice insect pest, unimas, university, universiti, Borneo, Malaysia, Sarawak, Kuching, Samarahan, ipta, education, research, Universiti Malaysia Sarawak
Subjects: Q Science > QL Zoology
Divisions: Academic Faculties, Institutes and Centres > Faculty of Resource Science and Technology
Depositing User: Wan Ismail
Date Deposited: 18 Dec 2020 09:24
Last Modified: 18 Dec 2020 09:24

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