In-vitro selection of pineapple cv. 'Queen' with resistance to culture filtrate of Phytophthora cinnamomi Rands

Issue Date

4-2014

Abstract

Laboratory and growth room studies were conducted to develop a tissue culture medium for pineapple callus induction and in-vitro selection of pineapple cv,'Queen' with resistance to culture filtrate of Phytopthora cinnamomi Rands. Basal Murashiege and Skoog's (MS) medium supplemented with 10 mg Lˉ¹ 4-amino-3,5,6-trichloro-2-pyridine carboxylic acid (picloram) was found to be the most effective for callus induction after 4 wk of culturing the explant in the medium. High frequency of regeneration of calli into plantlets was observed in MS medium supplemented with 5 μM benzene amino purine (BAP) and 1μM gibberellic acid (GA₃). The Phytophthora cinnamomi Rands isolate used in the study was isolated from Phytophthora heart rot infected pineapple from Caluan, Laguna, Phillipines. Inoculation of pineapple calli with different concentrations of P. cinnamomi crude filtrate showed that the toxic effects of the crude filtrate on the treated calli decreased with the reduction in filtrate concentration. Calli resistant to P. cinnamomi crude filtrate were selected and regenerated into plantlets after 3 cycles of selection.

Source or Periodical Title

Philippine Journal of Crop Science

ISSN

0115-463x

Volume

39

Issue

1

Page

58-66

Document Type

Article

Frequency

tri-quarterly

Physical Description

tables, graph, pictures

Language

English

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