Effect of growth regulators, applied alone or in combinations with magnesium sulfate, on magnesium economy in buckwheat plants
Nogalska, A.E-mail:[email protected] | Czapla, J.(University of Warmia and Mazury, Olsztyn (Poland). Dept. of Agricultural Chemistry and Environmental Protection)
Growth regulators (benzylaminopurine (BAP), alpha-naphthylacetic acid (NAA), indolebutyric acid (IBA), triacontanol (TRIA) and gibberellic acid (GA3) were applied to leaves, alone or in combinations with a 5 percent water solution of magnesium sulfate, twice in the vegetation season of buckwheat - at the beginning of flowering and in full flowering. It was found that the growth regulators (except BAP) and their combinations with magnesium sulfate, applied in the experiment, caused a significant increase in the magnesium content of buckwheat seeds. Magnesium accumulation in seeds decreased as a result of growth regulators application. An exception was IBA, which stimulated this process. Combinations of growth regulators with magnesium sulfate usually caused an increase in magnesium accumulation in buckwheat nutlets. Growth regulators (especially IBA) caused an increase in the magnesium content of buckwheat seeds, whereas their combination with magnesium sulfate caused its decrease
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