Characterization of root-yield-1.06, a major constitutive QTL for root and agronomic traits in maize across water regimes

Journal of Experimental Botany
Pierangelo LandiMaria Corinna Sanguineti

Abstract

A previous study on maize F(2:3) families derived from Lo964xLo1016 highlighted one QTL in bin 1.06 (hereafter named root-yield-1.06) affecting root and agronomic traits of plants grown in well-watered (WW) and water-stressed (WS) conditions. Starting from different F(4) families, two pairs of near isogenic lines (NILs) were developed at root-yield-1.06. The objective of this study was to evaluate root-yield-1.06 effects across different water regimes, genetic backgrounds, and inbreeding levels. The NILs per se and their crosses with Lo1016 and Lo964 were tested in 2008 and 2009 near to Bologna, with the well-watered (WW) and water-stressed (WS) treatments providing, on average, 70 mm and 35 mm of water, respectively. For NILs per se, the interactions QTL x water regime and QTL x family were negligible in most cases; the QTL additive effects across families were significant for several traits, especially root clump weight. For NILs crosses, analogously to NILs per se, the interactions were generally negligible and the additive effects across water regimes and families were significant for most traits, especially grain yield. A meta-analysis carried out considering the QTLs described in this and previous studies inferred one sin...Continue Reading

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Citations

Jun 22, 2012·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Hongguang CaiLixing Yuan
Sep 13, 2012·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·K A SteeleD S Virk
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Jul 30, 2010·Journal of Experimental Botany·John S Boyer
May 21, 2014·Journal of Genetics·Qingzhi LiangJinping Hua
Dec 17, 2014·Molecular Breeding : New Strategies in Plant Improvement·Maria Angela CanèRoberto Tuberosa
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Feb 18, 2016·Journal of Experimental Botany·Marco MaccaferriRoberto Tuberosa
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Dec 30, 2014·Journal of Experimental Botany·Roberto TuberosaMehmet Cakir
Mar 10, 2018·Journal of Experimental Botany·Heng YeHenry T Nguyen
Mar 20, 2018·Annual Review of Plant Biology·François TardieuBertrand Muller
Mar 25, 2017·Journal of Experimental Botany·Francois TardieuRoberto Tuberosa
Apr 27, 2019·Frontiers in Plant Science·Samir AlahmadLee T Hickey
Oct 1, 2014·Functional Plant Biology : FPB·Neil C TurnerNeil Young
Jul 11, 2014·Genetics·Tiffany M JamannRebecca J Nelson
May 14, 2018·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Cheng XuYunbi Xu
Dec 9, 2016·Journal of Experimental Botany·Babu ValliyodanHenry T Nguyen

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