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  Yield quantitative trait loci from wild tomato are predominately expressed by the shoot

Gur, A., Semel, Y., Osorio, S., Friedmann, M., Seekh, S., Ghareeb, B., et al. (2011). Yield quantitative trait loci from wild tomato are predominately expressed by the shoot. Theoretical and Applied Genetics, 122(2), 405-420. doi:10.1007/s00122-010-1456-9.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0014-21D7-5 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0019-C1F2-B
Genre: Journal Article

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 Creators:
Gur, A.1, Author
Semel, Y.1, Author
Osorio, S.2, Author              
Friedmann, M.1, Author
Seekh, S.1, Author
Ghareeb, B.1, Author
Mohammad, A.1, Author
Pleban, T.1, Author
Gera, G.1, Author
Fernie, A. R.2, Author              
Zamir, D.1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Central Metabolism, Department Willmitzer, Max Planck Institute of Molecular Plant Physiology, Max Planck Society, ou_1753339              

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Free keywords: interspecific introgression lines qtl analysis genetic-analysis salt tolerance arabidopsis-thaliana molecular markers drought tolerance root morphology grain-yield rice
 Abstract: Plant yield is the integrated outcome of processes taking place above and below ground. To explore genetic, environmental and developmental aspects of fruit yield in tomato, we phenotyped an introgression line (IL) population derived from a cross between the cultivated tomato (Solanum lycopersicum) and a wild species (Solanum pennellii). Both homozygous and heterozygous ILs were grown in irrigated and non-irrigated fields and evaluated for six yield components. Thirteen lines displayed transgressive segregation that increased agronomic yield consistently over 2 years and defined at least 11 independent yield-improving QTL. To determine if these QTL were expressed in the shoots or the roots of the plants, we conducted field trials of reciprocally grafted ILs; out of 13 lines with an effect on yield, 10 QTL were active in the shoot and only IL8-3 showed a consistent root effect. To further examine this unusual case, we evaluated the metabolic profiles of fruits from both the homo- and heterozygous lines for IL8-3 and compared these to those obtained from the fruit of their equivalent genotypes in the root effect population. We observed that several of these metabolic QTL, like the yield QTL, were root determined; however, further studies will be required to delineate the exact mechanism mediating this effect in this specific line. The results presented here suggest that genetic variation for root traits, in comparison to that present in the shoot, represents only a minor component in the determination of tomato fruit yield.

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Language(s): eng - English
 Dates: 2010-09-262011
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
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 Identifiers: ISI: ISI:000286198000015
DOI: 10.1007/s00122-010-1456-9
ISSN: 0040-5752
URI: ://000286198000015http://www.springerlink.com/content/30r8mp4388388462/fulltext.pdf
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Title: Theoretical and Applied Genetics
  Other : Theor. Appl. Genet.
Source Genre: Journal
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Publ. Info: Berlin : Springer-Verlag
Pages: - Volume / Issue: 122 (2) Sequence Number: - Start / End Page: 405 - 420 Identifier: ISSN: 0040-5752
CoNE: https://pure.mpg.de/cone/journals/resource/954925449785