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Etiology and Control of Phytophthora Infestans (Mont.) De Bary in Malaysia

Phytophthora infestans (Mont.) De Bary is the causal agent of late blight disease of tomato, a major destructive disease of tomato in Cameron Highlands. The study undertaken was to isolate the pathogen on artificial media. The morphology and cultural characteristics were described. Disease deve...

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Main Author: Mohd Yunus, Ahmad Kamil
Format: Thesis
Language:English
English
Published: 1994
Online Access:http://psasir.upm.edu.my/id/eprint/10345/1/FP_1994_4_A.pdf
http://psasir.upm.edu.my/id/eprint/10345/
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spelling my.upm.eprints.103452011-03-22T09:43:44Z http://psasir.upm.edu.my/id/eprint/10345/ Etiology and Control of Phytophthora Infestans (Mont.) De Bary in Malaysia Mohd Yunus, Ahmad Kamil Phytophthora infestans (Mont.) De Bary is the causal agent of late blight disease of tomato, a major destructive disease of tomato in Cameron Highlands. The study undertaken was to isolate the pathogen on artificial media. The morphology and cultural characteristics were described. Disease development of P. infestans isolates on tomato was also studied. In-vivo sensitivity of the isolates towards metalaxyl was tested. Disease epidemiology studies were conducted during the two tomato planting periods in Cameron Highlands. Three isolates of P. infestans from Cameron High lands were isolated on Rye Grain Agar (RGrA), V-8 Juice Agar (V8JA) and Rye wholemeal Agar (RWMA) allamended with antibiotics with percentage recovery of 2%, 0.1% and 0.4% respectively. The P. infestans isolates were designated as PIB/01, PIH/01 and PIKR/01. No growth was observed on the two other media viz. Pea Agar and Difco LBA. Successful isolation were aided by baiting using potato tuber slices. Morphological studies of the P. infestans isolate showed that the mean zoosporangia size was 37.25um x 19.71um, mean L/B ratio of 1.91 and mean short pedicel length of 1.60um. Mean zoospores diameter measured 9.99 um. No chlamydospores was produced in culture. 1994 Thesis NonPeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/10345/1/FP_1994_4_A.pdf Mohd Yunus, Ahmad Kamil (1994) Etiology and Control of Phytophthora Infestans (Mont.) De Bary in Malaysia. Masters thesis, Universiti Pertanian Malaysia. English
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
English
description Phytophthora infestans (Mont.) De Bary is the causal agent of late blight disease of tomato, a major destructive disease of tomato in Cameron Highlands. The study undertaken was to isolate the pathogen on artificial media. The morphology and cultural characteristics were described. Disease development of P. infestans isolates on tomato was also studied. In-vivo sensitivity of the isolates towards metalaxyl was tested. Disease epidemiology studies were conducted during the two tomato planting periods in Cameron Highlands. Three isolates of P. infestans from Cameron High lands were isolated on Rye Grain Agar (RGrA), V-8 Juice Agar (V8JA) and Rye wholemeal Agar (RWMA) allamended with antibiotics with percentage recovery of 2%, 0.1% and 0.4% respectively. The P. infestans isolates were designated as PIB/01, PIH/01 and PIKR/01. No growth was observed on the two other media viz. Pea Agar and Difco LBA. Successful isolation were aided by baiting using potato tuber slices. Morphological studies of the P. infestans isolate showed that the mean zoosporangia size was 37.25um x 19.71um, mean L/B ratio of 1.91 and mean short pedicel length of 1.60um. Mean zoospores diameter measured 9.99 um. No chlamydospores was produced in culture.
format Thesis
author Mohd Yunus, Ahmad Kamil
spellingShingle Mohd Yunus, Ahmad Kamil
Etiology and Control of Phytophthora Infestans (Mont.) De Bary in Malaysia
author_facet Mohd Yunus, Ahmad Kamil
author_sort Mohd Yunus, Ahmad Kamil
title Etiology and Control of Phytophthora Infestans (Mont.) De Bary in Malaysia
title_short Etiology and Control of Phytophthora Infestans (Mont.) De Bary in Malaysia
title_full Etiology and Control of Phytophthora Infestans (Mont.) De Bary in Malaysia
title_fullStr Etiology and Control of Phytophthora Infestans (Mont.) De Bary in Malaysia
title_full_unstemmed Etiology and Control of Phytophthora Infestans (Mont.) De Bary in Malaysia
title_sort etiology and control of phytophthora infestans (mont.) de bary in malaysia
publishDate 1994
url http://psasir.upm.edu.my/id/eprint/10345/1/FP_1994_4_A.pdf
http://psasir.upm.edu.my/id/eprint/10345/
_version_ 1643824577792442368
score 13.211869

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