Analysis of assimilate distribution by 3H-tracing during recovery period after rice seedling transplanting

Analysis of assimilate distribution by 3H-tracing during recovery period after rice seedling... In order to characterize assimilate distribution in rice (Oryza sativa L.) seedlings during recovery period after transplanting, the experiments were conducted by using 3H-isotope tracer technique with three rice hybrid combinations. The label introduced into the leaf sheath was distributed and redistributed to young roots, tillers, and young leaves, thus promoting these organs to grow at the initial stage after transplanting. During period from 10 to 30 days after labeling, 3H-assimilate redistribution occurred mainly from the sheath of the main stem; some radioactivity moved to tillers and roots emerged after transplanting. The activity and percentage of 3H-compounds transporting to rooting nodes and roots emerged after transplanting were higher in root-pruned plants than in control, indicating that growth of root-pruned seedlings more depended on the export of the compounds from the sheath of the main stem than growth of control seedlings. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Plant Physiology Springer Journals

Analysis of assimilate distribution by 3H-tracing during recovery period after rice seedling transplanting

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Publisher
SP MAIK Nauka/Interperiodica
Copyright
Copyright © 2011 by Pleiades Publishing, Ltd.
Subject
Life Sciences; Plant Sciences ; Plant Physiology
ISSN
1021-4437
eISSN
1608-3407
D.O.I.
10.1134/S1021443711010146
Publisher site
See Article on Publisher Site

Abstract

In order to characterize assimilate distribution in rice (Oryza sativa L.) seedlings during recovery period after transplanting, the experiments were conducted by using 3H-isotope tracer technique with three rice hybrid combinations. The label introduced into the leaf sheath was distributed and redistributed to young roots, tillers, and young leaves, thus promoting these organs to grow at the initial stage after transplanting. During period from 10 to 30 days after labeling, 3H-assimilate redistribution occurred mainly from the sheath of the main stem; some radioactivity moved to tillers and roots emerged after transplanting. The activity and percentage of 3H-compounds transporting to rooting nodes and roots emerged after transplanting were higher in root-pruned plants than in control, indicating that growth of root-pruned seedlings more depended on the export of the compounds from the sheath of the main stem than growth of control seedlings.

Journal

Russian Journal of Plant PhysiologySpringer Journals

Published: Jan 8, 2011

References

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