CCC [(2-chloroethyl) tnmethyl ammonium chloride] retarded shoot elongation and increased leaf thickness and size (or volume) of leaf mesophyll cells in hollyhock plants. Photosynthetic activities were stimulated by CCC, whereas post-illumination CO2 outburst-1 [PIB-1], PIB-2 and dark respiration were depressed by CCC. Chlorophyll and protein content of leaves treated with CCC also increased as compared with those of control leaves. CCC enabled the plant to bear flowers at the nodes from lower to upper positions of the hollyhock shoots without flower (bud) abortion.
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Tezuka et al. (1989) studied this question.
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