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Protection of bean seedlings against heat and chilling injury by triadimefon
Author(s) -
AsareBoamah N. K.,
Fletcher R. A.
Publication year - 1986
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1986.tb05747.x
Subject(s) - triadimefon , phaseolus , shoot , fungicide , chlorophyll , horticulture , postharvest , chemistry , distilled water , botany , biology , chromatography
Triadimefon [1‐(4‐chlorophenoxy)‐3,3‐dimethyl‐l‐(l,2,4‐triazol‐l‐yl)‐2‐butanone] is a triazoie fungicide which protects bean ( Phaseolus vulgaris L. cv. Spring Green) plants from heat and chilling injury. When the plants were exposed to heat shock by dipping the shoots in hot (50°C) distilled water for 2 min or exposing the plants to cold (1°C) for 8 h the primary leaves showed visual symptoms of injury 2 days after treatment and thereafter there was a progressive decline in chlorophyll and an increase in electrolyte leakage indicative of a loss of membrane integrity. There was a loss of metabolic (respiratory) activity in the root meristems when the roots were dipped in hot (48°C) water. All these symptoms of heat and chilling injury in the controls were either delayed or prevented by root application of triadimefon.