Gibberellic acid-induced cell elongation in cotton suspension cultures |
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Authors: | Gayle H Davidonis |
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Institution: | 1. Southern Regional Research Center, USDA, ARS, P.O. Box 19687, 70179, New Orleans, Louisiana, USA
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Abstract: | Gibberellic acid (GA3) causes cell elongation in cotton suspension cultures derived from cotton ovule callus tissue of both auxin-dependent and-independent lines. Cell elongation was more pronounced in auxin-dependent cultures. Cells were cultured for a period of 14 days but differences in cell lengths could be detected after 6 days in culture. Cell elongation took place in cultures in which GA3 was present throughout the culture period or only for the first 3 days. Auxins and cytokinin alone or in the presence of GA3 did not promote cotton cell elongation above the value for the treatment with GA3 alone. |
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