A Simple Procedure to Overcome Polyethelene Glycol Toxicity on Whole Plants | Zendy

Z. Plaut | Zendy; Evelyn Federman | Zendy

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A Simple Procedure to Overcome Polyethelene Glycol Toxicity on Whole Plants

Author(s) -

Z. Plaut,

Evelyn Federman

Publication year - 1985

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.79.2.559

Subject(s) - peg ratio , polyethylene glycol , chemistry , chlorophyll , dehydration , horticulture , food science , botany , biology , biochemistry , finance , economics

A procedure is described that can be used to minimize toxic effects of polyethylene glycol (PEG) to plants. The procedure is based on recycling nutrient solutions containing PEG-6000 through two plant cultures. Tomato plants grown in -0.3 megapascals PEG solutions used after two growth cycles exhibited minimal toxic effects. Long-term responses like dry matter production and chlorophyll content as well as short-term responses like CO(2) fixation rates and leaf conductance were severely inhibited by fresh PEG-6000 and only slightly reduced by recycled PEG-6000. Complete osmotic adjustment was obtained with tomatoes grown in recycled but not in fresh PEG solutions.

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