常春藤疫病

安寶貞; Ann, P.J.

常春藤疫病

Other Title

Phytophthora disease of English ivy In Taiwan

Journal

植物保護學會會刊

Journal Volume

35

Journal Issue

2

Pages

149-155

Date Issued

1993-06

Date

1993-06

Author(s)

安寶貞

Ann, P.J.

URI

https://scholars.tari.gov.tw/handle/123456789/4563

Abstract

A total of 25 isolates (9 Al : 16 A2) of Phytophthora palmivora were isolated from diseased tissues of English ivy in 7 fields in Taiwan, recently. P. palmivora attacked the whole ornamental plants including leaves, stems, and roots. Infected leaves became bleached, water soaking and dropped. Infected stem tissues turned bleached and browning. The affected plants dropped and wilted, and eventually died if basal stems or main roots were infected. Disease generally occurred under moist conditions and was especially serious during rainy seasons. On the inoculated plants, all test isolates of P. palmivora caused symptoms similar to those occur under natural field conditions in pathogenicity tests. P. palmivora was reisolated from the diseased tissues of inoculated plants. Isolates of P. palmivora from ivy grew on V-8 agar medium ranging from 12 to 35 ℃ and the optimum growth temperatures were 27-30 ℃ . All Taiwanese ivy isolates of P. palmivora belong to the typical types. Phytophthora disease of English ivy was reported the first time in Taiwan.

Subjects

English ivy

Phytophthora palmivora

Publisher

中華植物保護學會

Type

journal article

File(s)

Name

35-2-149-155.pdf

Size

1.78 MB

Format

Adobe PDF

Checksum

(MD5):da40f7a04ff87351d33a237429a3cd81