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Effect of high temperature and relative humidity on host - pest interaction

Environmental stress such as extreme temperature and relative humidity affect growth and development in plants as well as biotic interactions. In leafy vegetable such as green mustard (Brassica rapa var. parachinensis, ‗sawi hijau‘). High temperature and low relative humidity subjected the vegetable...

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Main Author: Hosni, Suzziyana
Format: Project Paper Report
Language:English
Published: 2017
Online Access:http://psasir.upm.edu.my/id/eprint/91472/1/FP%202017%2070%20-%20IR.pdf
http://psasir.upm.edu.my/id/eprint/91472/
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spelling my.upm.eprints.914722021-11-18T04:22:41Z http://psasir.upm.edu.my/id/eprint/91472/ Effect of high temperature and relative humidity on host - pest interaction Hosni, Suzziyana Environmental stress such as extreme temperature and relative humidity affect growth and development in plants as well as biotic interactions. In leafy vegetable such as green mustard (Brassica rapa var. parachinensis, ‗sawi hijau‘). High temperature and low relative humidity subjected the vegetable plants vulnerable to grasshopper infestation. Grasshoppers are expected to respond more than other organisms because these are ectoderms. Grasshopper exacerbate the already damage crop due to changes in morphology, biochemistry and physiology in plants caused by extreme abiotic factors. This study aims to understand the mechanisms that are driving the population dynamics of green grasshopper (Caelifera spp.) on green mustard. Specifically, (i) to study the impact of high temperature on plant growth and development; (ii) to observe the insect pest behavior and their habit in high temperature and humid environment; (iii) to determine the host – pest interaction under high temperature and low relative humidity. Insects were introduced in each plant in the simulation chambers in order to observe their relation to plant response under high temperature and low humidity. T-test analyse were used to observe the comparison between interactions of host – pest on two different temperatures. Plant parameters such as transpiration rate, leaf area, plant height, plant development stage, and weight were measured every two days whilst insect pest behavior, feeding habit, development and survival rate were recorded. From the analyses obtained, temperature induces changes in host plant suitability to insect herbivores on account of significant effect on mass of dry matter, plant height and number of leaves. The higher temperature resulting higher pest infestation on vegetable cultivation in various ways. Thus the changes lower the food value, causing insect pest consume more on the plant to meet their nutritional needs. 2017 Project Paper Report NonPeerReviewed text en http://psasir.upm.edu.my/id/eprint/91472/1/FP%202017%2070%20-%20IR.pdf Hosni, Suzziyana (2017) Effect of high temperature and relative humidity on host - pest interaction. [Project Paper Report]
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 Environmental stress such as extreme temperature and relative humidity affect growth and development in plants as well as biotic interactions. In leafy vegetable such as green mustard (Brassica rapa var. parachinensis, ‗sawi hijau‘). High temperature and low relative humidity subjected the vegetable plants vulnerable to grasshopper infestation. Grasshoppers are expected to respond more than other organisms because these are ectoderms. Grasshopper exacerbate the already damage crop due to changes in morphology, biochemistry and physiology in plants caused by extreme abiotic factors. This study aims to understand the mechanisms that are driving the population dynamics of green grasshopper (Caelifera spp.) on green mustard. Specifically, (i) to study the impact of high temperature on plant growth and development; (ii) to observe the insect pest behavior and their habit in high temperature and humid environment; (iii) to determine the host – pest interaction under high temperature and low relative humidity. Insects were introduced in each plant in the simulation chambers in order to observe their relation to plant response under high temperature and low humidity. T-test analyse were used to observe the comparison between interactions of host – pest on two different temperatures. Plant parameters such as transpiration rate, leaf area, plant height, plant development stage, and weight were measured every two days whilst insect pest behavior, feeding habit, development and survival rate were recorded. From the analyses obtained, temperature induces changes in host plant suitability to insect herbivores on account of significant effect on mass of dry matter, plant height and number of leaves. The higher temperature resulting higher pest infestation on vegetable cultivation in various ways. Thus the changes lower the food value, causing insect pest consume more on the plant to meet their nutritional needs.
format Project Paper Report
author Hosni, Suzziyana
spellingShingle Hosni, Suzziyana
Effect of high temperature and relative humidity on host - pest interaction
author_facet Hosni, Suzziyana
author_sort Hosni, Suzziyana
title Effect of high temperature and relative humidity on host - pest interaction
title_short Effect of high temperature and relative humidity on host - pest interaction
title_full Effect of high temperature and relative humidity on host - pest interaction
title_fullStr Effect of high temperature and relative humidity on host - pest interaction
title_full_unstemmed Effect of high temperature and relative humidity on host - pest interaction
title_sort effect of high temperature and relative humidity on host - pest interaction
publishDate 2017
url http://psasir.upm.edu.my/id/eprint/91472/1/FP%202017%2070%20-%20IR.pdf
http://psasir.upm.edu.my/id/eprint/91472/
_version_ 1717095449044713472
score 13.211869

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