Document Detail

Structural and histochemical studies on grain-filling in the caryopsis of rice (Oryza sativa L.).
MedLine Citation:
PMID:  12799492     Owner:  NLM     Status:  MEDLINE    
The endosperm and embryo that constitute the filial tissues of rice caryopsis are isolated from the maternal tissues by the absence of any symplastic continuity. Nutrients are transported to the endosperm through a single ovular vascular trace present on the ventral side of the ovary. Initially solute enters through the chalaza into the nucellar projection and then into the endosperm. At later stages transport occurs through the nucellar epidermis, centripetally towards the endosperm. The cell walls of the nucellar epidermis are provided with rib-like thicken ings. A comparison of grain-filling in C3 and C4 cereals suggests that rice has structural features allied to C3 cereals, such as wheat, but with significant differences.
S Krishnan; P Dayanandan
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of biosciences     Volume:  28     ISSN:  0250-5991     ISO Abbreviation:  J. Biosci.     Publication Date:  2003 Jun 
Date Detail:
Created Date:  2003-06-11     Completed Date:  2004-03-10     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  8100809     Medline TA:  J Biosci     Country:  India    
Other Details:
Languages:  eng     Pagination:  455-69     Citation Subset:  IM    
Department of Botany,Goa University,Goa 403 206, India.
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MeSH Terms
Chlorophyll / metabolism
Gene Expression Regulation, Plant
Oryza sativa / anatomy & histology*,  physiology
Plant Physiological Phenomena
Reg. No./Substance:

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