THE EFFECT OF CALCIUM AND OTHER IONS ON THE EARLY DEVELOPMENT OF THE RADICLE OF COTTON SEEDLINGS

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Abstract
In an effort to produce cotton seedling with healthy radicles for laboratory studies, various materials and moisture levels were tried. Cotton seedlings germinated under low moisture conditions had a tendency to break down when transferred to water or to solns. containing various anions and cations. The breakdown was complete except in solutions containing Ca cations or in solns. where Ca was balanced with other cations. Cotton seedlings germinated under high moisture conditions and transferred to solutions containing various cations and anions were mainly healthy, except where Ca was absent or where the ratio of Ca to other cations was low. The anions, chloride and sulfate, had no apparent effect on radicle breakdown in these expts.