Transmission and Pattern of Spread of Chilli Veinal Mottle Virus by Aphis Gossypii Glover (Homoptera: Aphididae)

Chilli veinal mottle virus (CVMV) is a serious problem and has become a major limiting factor in growing and production of chilli in Malaysia. This virus is transmitted non-persistently by aphid, Aphis gossypii. CVMV control efforts have been unsuccessful due to lack of knowledge on the epidemio...

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Main Author:	Lee, Kue Moi
Format:	Thesis
Language:	English English
Published:	1992
Subjects:	Homoptera Fossil - Malaysia
Online Access:	http://psasir.upm.edu.my/id/eprint/8568/1/FSAS_1992_4_A.pdf
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id	my-upm-ir.8568
record_format	uketd_dc
spelling	my-upm-ir.85682012-05-07T05:25:04Z Transmission and Pattern of Spread of Chilli Veinal Mottle Virus by Aphis Gossypii Glover (Homoptera: Aphididae) 1992 Lee, Kue Moi Chilli veinal mottle virus (CVMV) is a serious problem and has become a major limiting factor in growing and production of chilli in Malaysia. This virus is transmitted non-persistently by aphid, Aphis gossypii. CVMV control efforts have been unsuccessful due to lack of knowledge on the epidemiology of the virus. S tudies on transmission and spread of CVMV to chilli using nymphs and adults of A. gossypii were conducted in the laboratory and glasshouse. Aphids and test plants (Capsicum annuumcv. Me 4) were A single A . gossypii was abl e to transmit and r e tain CVMV regardless whether it was fed or starved. A. gossypii lost CVMV infectivity more rapidly in serial transfer (when feeding) than in post- acquisition starvation (when starving). Transmission level decreased as the period of serial transfer (0-60 min) and post-acquisition starvation time (1-120 min) increased, however, the level of transmission increased with aphid density. cultured and maintained in insect proof glasshouse. Fifteen seconds and thirty seconds acquisition feeding time were found to be the optimum time for A. gossypii to transmit CVMV. All aphid forms were equally efficient in CVMV transmission.Colony establishment of A. gossypii was faster when aphids were initially released on healthy plants than on CVMV infected plants. Apterous vectors spread CVMV more efficiently than alate vectors. However, CVMV s pread faster when A. gossypii was placed on the inoculum source. Apterous adults released near the inoculum source achieved the highest level of transmission compared with the alates. In the beginning, CVMV spread occurred mostly near the inoculum source and moved outward thereafter. Homoptera, Fossil - Malaysia 1992 Thesis http://psasir.upm.edu.my/id/eprint/8568/ http://psasir.upm.edu.my/id/eprint/8568/1/FSAS_1992_4_A.pdf application/pdf en public masters Universiti Pertanian Malaysia Homoptera, Fossil - Malaysia Faculty of Environmental Studies English
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English English
topic	Homoptera Fossil - Malaysia
spellingShingle	Homoptera Fossil - Malaysia Lee, Kue Moi Transmission and Pattern of Spread of Chilli Veinal Mottle Virus by Aphis Gossypii Glover (Homoptera: Aphididae)
description	Chilli veinal mottle virus (CVMV) is a serious problem and has become a major limiting factor in growing and production of chilli in Malaysia. This virus is transmitted non-persistently by aphid, Aphis gossypii. CVMV control efforts have been unsuccessful due to lack of knowledge on the epidemiology of the virus. S tudies on transmission and spread of CVMV to chilli using nymphs and adults of A. gossypii were conducted in the laboratory and glasshouse. Aphids and test plants (Capsicum annuumcv. Me 4) were A single A . gossypii was abl e to transmit and r e tain CVMV regardless whether it was fed or starved. A. gossypii lost CVMV infectivity more rapidly in serial transfer (when feeding) than in post- acquisition starvation (when starving). Transmission level decreased as the period of serial transfer (0-60 min) and post-acquisition starvation time (1-120 min) increased, however, the level of transmission increased with aphid density. cultured and maintained in insect proof glasshouse. Fifteen seconds and thirty seconds acquisition feeding time were found to be the optimum time for A. gossypii to transmit CVMV. All aphid forms were equally efficient in CVMV transmission.Colony establishment of A. gossypii was faster when aphids were initially released on healthy plants than on CVMV infected plants. Apterous vectors spread CVMV more efficiently than alate vectors. However, CVMV s pread faster when A. gossypii was placed on the inoculum source. Apterous adults released near the inoculum source achieved the highest level of transmission compared with the alates. In the beginning, CVMV spread occurred mostly near the inoculum source and moved outward thereafter.
format	Thesis
qualification_level	Master's degree
author	Lee, Kue Moi
author_facet	Lee, Kue Moi
author_sort	Lee, Kue Moi
title	Transmission and Pattern of Spread of Chilli Veinal Mottle Virus by Aphis Gossypii Glover (Homoptera: Aphididae)
title_short	Transmission and Pattern of Spread of Chilli Veinal Mottle Virus by Aphis Gossypii Glover (Homoptera: Aphididae)
title_full	Transmission and Pattern of Spread of Chilli Veinal Mottle Virus by Aphis Gossypii Glover (Homoptera: Aphididae)
title_fullStr	Transmission and Pattern of Spread of Chilli Veinal Mottle Virus by Aphis Gossypii Glover (Homoptera: Aphididae)
title_full_unstemmed	Transmission and Pattern of Spread of Chilli Veinal Mottle Virus by Aphis Gossypii Glover (Homoptera: Aphididae)
title_sort	transmission and pattern of spread of chilli veinal mottle virus by aphis gossypii glover (homoptera: aphididae)
granting_institution	Universiti Pertanian Malaysia
granting_department	Faculty of Environmental Studies
publishDate	1992
url	http://psasir.upm.edu.my/id/eprint/8568/1/FSAS_1992_4_A.pdf
_version_	1747810830816116736

Transmission and Pattern of Spread of Chilli Veinal Mottle Virus by Aphis Gossypii Glover (Homoptera: Aphididae)

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