Reproductive Biology of Selaginella: I. Determination of Megasporangia by 2-Chloroethylphosphonic Acid, an Ethylene-releasing Compound 1

AUTOR(ES)

Brooks, Kenton E.

RESUMO

Control clumps of Selaginella wallacei Heiron., sprayed with distilled water with Tween 20, produced a high proportion of microsporangia. Similar clumps sprayed with 2-chlorethyl-phosphonic acid, and ethylene-releasing compound (Ethephon), at 7.65 and 76.5 mg/liter produced almost exclusively megasporangia. Treatment of Selaginella pallescens (Presl) Spring with Ethephon at 34 mg/liter caused the production of megasporangia in the microsporangiate files of the strobili. The possibility that ethylene may be involved in the regulation of heterospory in Selaginella is discussed.

Documentos Relacionados

• Ethylene Evolution From 2-Chloroethylphosphonic Acid 1
• Ethylene Evolution From 2-Chloroethylphosphonic Acid
• Sex Expression in Cucumber Plants as Affected by 2-Chloroethylphosphonic Acid, Ethylene, and Growth Regulators
• Effects of Ethylene and 2-Chloroethylphosphonic Acid on the Ripening of Grapes
• Potentiation and Inhibition of the Effects of 2-Chloroethylphosphonic Acid by Malformin 1