
%0 Journal Article
%A Asher, CJ 
%A Ozanne, PG 
%T Individual Plant Variability in Susceptibility to Potassium Deficiency: Some Observations on Capeweed [<I>Arctotheca calendula</I> (L.) Levyns]
%J Functional Plant Biology
%D 1977/08/01
%V 4
%N 4
%P 499-503
%K 
%R https://doi.org/10.1071/PP9770499
%U https://www.publish.csiro.au/paper/PP9770499 
%X Individual plants in an apparently uniform set of capeweed seedlings were found to differ markedly in susceptibility to potassium deficiency when grown in solution culture at a constant potassium concentration of 2.6 µM. Large differences were found in dry weight of tops (8-218 mg), tissue potassium concentration (0.3 - 4.8 %) and total potassium in the tops (23-10 500 µg potassium). Dry weight and percentage potassium were positively correlated  (r = 0.859, P<0.001) at 2.6 µM potassium but not at higher potassium concentrations. The nature and possible exploitation of such variability in cross-fertilized forage plants are briefly discussed. 
