Pathogenicity of Spodoptera Litura Nuclear Polyhedrosis Virus to S. Litura F. Larvae and its Impact on Sycanus Leucomesus W.

Pathogenicity of Spodoptera Litura Nuclear Polyhedrosis Virus to S. Litura F. Larvae and its Impact on Sycanus Leucomesus W.

Spodoptera litura Fabricius (Lepidoptera: Noctuidae) is a pest of many agriculture and forestry crops in several parts of the world including Malaysia. One of the natural enemies responsible for regulating field population of S. litura is a nuclear polyhedrosis virus (NPV). In this study, the S....

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Main Author: James, Rubinsin Kotulai
Format: Thesis
Language:English
English
Published: 1994
Subjects:
Spodoptera
Online Access:http://psasir.upm.edu.my/id/eprint/9910/1/FH_1994_1_A.pdf
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spelling my-upm-ir.99102011-02-25T07:20:01Z Pathogenicity of Spodoptera Litura Nuclear Polyhedrosis Virus to S. Litura F. Larvae and its Impact on Sycanus Leucomesus W. 1994 James, Rubinsin Kotulai Spodoptera litura Fabricius (Lepidoptera: Noctuidae) is a pest of many agriculture and forestry crops in several parts of the world including Malaysia. One of the natural enemies responsible for regulating field population of S. litura is a nuclear polyhedrosis virus (NPV). In this study, the S. filura NPV was tested for its actual pathogenicity to S. Litura larvae using eight viral doses ranging from 60 to 6 X 10⁸ PIBs/larva. The result of bioassay shows that LD50 LD90 and LD99 was 5.50 x 10⁴, 5.26 X 10⁸ and 9.26 x 10¹¹ PIBs/larva, respectively. The regression equation, Y = 3.47 + 0.32X , indicates that an increase of larval mortality was due to an increase in viral doses. The LT of the doses was eight, six and five days, respectively, with a regression equation of Y = 13.59 - 9.41X. Spodoptera 1994 Thesis http://psasir.upm.edu.my/id/eprint/9910/ http://psasir.upm.edu.my/id/eprint/9910/1/FH_1994_1_A.pdf application/pdf en public masters Universiti Pertanian Malaysia Spodoptera Faculty of Forestry English
institution Universiti Putra Malaysia
collection PSAS Institutional Repository
language English
English
topic Spodoptera
spellingShingle Spodoptera


James, Rubinsin Kotulai
Pathogenicity of Spodoptera Litura Nuclear Polyhedrosis Virus to S. Litura F. Larvae and its Impact on Sycanus Leucomesus W.
description Spodoptera litura Fabricius (Lepidoptera: Noctuidae) is a pest of many agriculture and forestry crops in several parts of the world including Malaysia. One of the natural enemies responsible for regulating field population of S. litura is a nuclear polyhedrosis virus (NPV). In this study, the S. filura NPV was tested for its actual pathogenicity to S. Litura larvae using eight viral doses ranging from 60 to 6 X 10⁸ PIBs/larva. The result of bioassay shows that LD50 LD90 and LD99 was 5.50 x 10⁴, 5.26 X 10⁸ and 9.26 x 10¹¹ PIBs/larva, respectively. The regression equation, Y = 3.47 + 0.32X , indicates that an increase of larval mortality was due to an increase in viral doses. The LT of the doses was eight, six and five days, respectively, with a regression equation of Y = 13.59 - 9.41X.
format Thesis
qualification_level Master's degree
author James, Rubinsin Kotulai
author_facet James, Rubinsin Kotulai
author_sort James, Rubinsin Kotulai
title Pathogenicity of Spodoptera Litura Nuclear Polyhedrosis Virus to S. Litura F. Larvae and its Impact on Sycanus Leucomesus W.
title_short Pathogenicity of Spodoptera Litura Nuclear Polyhedrosis Virus to S. Litura F. Larvae and its Impact on Sycanus Leucomesus W.
title_full Pathogenicity of Spodoptera Litura Nuclear Polyhedrosis Virus to S. Litura F. Larvae and its Impact on Sycanus Leucomesus W.
title_fullStr Pathogenicity of Spodoptera Litura Nuclear Polyhedrosis Virus to S. Litura F. Larvae and its Impact on Sycanus Leucomesus W.
title_full_unstemmed Pathogenicity of Spodoptera Litura Nuclear Polyhedrosis Virus to S. Litura F. Larvae and its Impact on Sycanus Leucomesus W.
title_sort pathogenicity of spodoptera litura nuclear polyhedrosis virus to s. litura f. larvae and its impact on sycanus leucomesus w.
granting_institution Universiti Pertanian Malaysia
granting_department Faculty of Forestry
publishDate 1994
url http://psasir.upm.edu.my/id/eprint/9910/1/FH_1994_1_A.pdf
_version_ 1747811016035532800

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