Iron chlorosis of soybean plants has been studied by many investigators. It has been found that root cells of iron starved plants (non-chlorotic) accumulate a great amount of Fe 59 when grown in the presence of iron. As the soybean plant becomes more chlorotic it has a greater capacity to absorb iron. There was a greatly increased rate of transport and accumulation of iron in the leaves of the chlorotic plants. The condition that takes place in soybean roots grown under deficient iron concentrations and the mechanism whereby the iron is absorbed and accumulated more readily is still not known. Have chlorotic plants the same ability to absorb more of other metal irons? The solution of this problem may help the elucidation of the mechanism. The present work was undertaken to study the effect of chlorosis on Zn absorption and its mechanism. |
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