Effect of potassium on thallium toxicity in cucumber seedlings: further evidence for potassium-thallium ion antagonism

✍ Scribed by B.Z. Siegel; S.M. Siegel

• Book ID: 104105849
• Publisher: Elsevier Science
• Year: 1976
• Weight: 257 KB
• Volume: 6
• Category: Article
• ISSN: 0006-3061
• DOI: 10.1016/s0006-3061(00)80019-8

✦ Synopsis

Potassium4eficient cucumber seedlings are more sensitive to thallium than are those receiving aogenous potassium. Limiting potassium, short of an overt expression of deficiency, increased the sensitivity of the plants to thallium and further demonstrates a mitigation of thallium toxicity. Relatively high levels of TI-ion (10 mbi) precipitate L?deticiency symptoms. The epicotyl is more sensitive to Tl-ion than are preformed hypocotyls, sugesting that developmental processes dependent on cell multiplication may be more sensitive to thallium than those entailing cell enlargement and differentiation.