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KMID : 0368419890320040305
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Journal of Plant Biology
1989 Volume.32 No. 4 p.305 ~ p.312
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Ontogeny of the Fascicular Cambium in the Hypocotyl of Ricinus communis L.
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Soh Woong-Young
Kang Kyung-Duck
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Abstract
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Developmental anatomy was conducted in order to elucidate the differentiating pattern of fascicular cambial initials in the hypocotyl of Ricinus communis.
The homogeneous procambium with relatively short cells in early stage is transformed into a heterogeneous structure with long and short cells in late stage in tangential view. Fusiform and ray initials are gradually originated from the long and short cells of the procambium in hypocotyl in later stage respectively. Fusiform initials are not shorter than procambial cells because of the successive elongation of vascular meristematic cells. Therefore, the distinction between procambium and fascicular cambium is not made from comparison with their cell length. The characteristics of the fascicular cambium are gradually acquired at or just after completion of hypocotyl elongation.
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