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Correlated promotion of ray-floret growth in chrysanthemum by potassium chloride, gibberellic acid and sucrose

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Proceedings / Indian Academy of Sciences

Abstract

The role of 10−2 M, 2×10−2 M, 4×10−2 M potassium chloride, gibberellic acid (10−5 M; GA3) and sucrose (5×10−2 M) (used individually and in various combinations) in the elongation growth of excised ray-florets ofChrysanthemum morifolium var. Jyothsna, was investigated. KCl (10−3 M) caused 33·3% increase in elongation as compared to control (16·7%). With GA3 and sucrose the percentage of elongation recorded was 39·8 and 28·9 respectively. Maximal growth response (82·8%) was recorded in KCl (4×10−2 M)+GA3 (10−5 M)+sucrose (5×10−2 M). When used in combination either with GA3 or sucrose, KCl showed an almost additive effect, whereas in the presence of both it acted synergistically. It is inferred that the increased turgor resulting from sucrose-promoted potassium uptake along with GA3-caused tissue extensibility accounts for enhanced floret growth.

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Authors and Affiliations

  1. Department of Botany, University of Delhi, 110 007, Delhi, India

    P Pardha Saradhi & H Y Mohan Ram

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  1. P Pardha Saradhi
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  2. H Y Mohan Ram
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Pardha Saradhi, P., Mohan Ram, H.Y. Correlated promotion of ray-floret growth in chrysanthemum by potassium chloride, gibberellic acid and sucrose. Proc. Indian Acad. Sci. 91, 101–106 (1982). https://doi.org/10.1007/BF03167113

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  • DOI: https://doi.org/10.1007/BF03167113

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