Substitution of Germanium for Boron in Plant Growth

Autor:	John Skok, Wayne J. McIlrath
Rok vydání:	1966
Předmět:	inorganic chemicals Germanium dioxide Plant growth Physiology fungi food and beverages chemistry.chemical_element Germanium Articles Plant Science Sunflower chemistry.chemical_compound Nutrient chemistry Agronomy Helianthus annuus Shoot Genetics Boron
Zdroj:	Plant Physiology. 41:1209-1212
ISSN:	1532-2548 0032-0889
DOI:	10.1104/pp.41.7.1209
Popis:	The observation was confirmed that the addition of germanium dioxide (soluble form) to the nutrient solution can delay for a short time the appearance of boron deficiency symptoms on the shoots of sunflower plants (Helianthus annuus L.). This appeared to be true, however, only under growing conditions in which the plants had a low boron requirement. The delay in the appearance of boron deficiency symptoms by administering germanium was demonstrated in sunflower plants ranging in age from 7 to 20 days. This effect was noted whether the germanium was administered prior to or at the time the plants were transferred to minus-boron nutrient solution.It is proposed that germanium does not truly substitute for boron in metabolic processes of the plant but rather functions through increasing the mobility of soluble boron within the plant and in binding nonmetabolic polyhydroxyl sites thus serving in a sparing role for the limited quantity of soluble boron in the growth centers.
Databáze:	OpenAIRE
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