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Abstract
One‐cm root‐tips of Sorghum bicolor (L.) Moench cv Funk G522DR, SC574, SC283, or GP‐10 were exposed to calcium (45Ca2+) for 2‐hr at pH 5.5 in the presence of vanadate (0,0.1, 1.0, or 10.0 mM). Genetic variation in vanadate‐untreated absorption of 45Ca2+ was observed. Vanadate inhibited 45Ca2+ uptake in Funk G522DR, SC574, and GP‐10 linearly with the log concentration. In SC283, 0.1 mM vanadate significantly decreased 45Ca2+ absorption; but, 45Ca2+ absorption increased at higher vanadate concentrations.