Document Detail

The growths of leaves, shoots, roots and reproductive organs partly share their genetic control in maize plants.
MedLine Citation:
PMID:  23190045     Owner:  NLM     Status:  Publisher    
We have tested to what extent the growth ability of several organs of maize share a common genetic control. Leaf elongation rate reaches every night a maximum value (LER(max) ) that has a high heritability, is repeatable between experiments and is correlated with final leaf length. We first summarised QTLs of LER(max) and of leaf length in three mapping populations. Among the 14 consensus QTLs (cQTLs) of leaf length, seven co-located with cQTLs of LER(max) with consistent allelic effects. Nine cQTLs of LER(max) (4% of the genome) were highly reliable and confirmed by introgression lines. We then compared these QTLs with those affecting the growths of leaves, shoots, roots or young reproductive organs, detected with the same mapping populations in three field experiments or in literature datasets. Five of the 9 most reliable cQTLs of LER(max) co-located with QTLs involved in the growth of other organs (but not in flowering time) with consistent allelic effects. Reciprocally, two third of the 20 QTLs of growth of different organs co-located with cQTLs of LER(max) . Hence, LER(max) , as determined in a phenotyping platform, is an indicator of the growth ability of other organs of the plant in controlled or in field conditions.
G Dignat; C Welcker; M Sawkins; Jm Ribaut; F Tardieu
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-11-29
Journal Detail:
Title:  Plant, cell & environment     Volume:  -     ISSN:  1365-3040     ISO Abbreviation:  Plant Cell Environ.     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-29     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9309004     Medline TA:  Plant Cell Environ     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2012 Blackwell Publishing Ltd.
INRA - AGRO M, UMR759, Laboratoire d'Ecophysiologie des Plantes sous Stress Environnementaux, Place Viala, F-34060, Montpellier Cedex 1, France; Syngenta Seeds SAS, 31790, Saint-Sauveur, France.
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