Determining Phenological Patterns Associated with the Onset of Senescence in a Wheat MAGIC Mapping Population.
Determining Phenological Patterns Associated with the Onset of Senescence in a Wheat MAGIC Mapping Population.
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DOI：
10.3389/fpls.2016.01540
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发表时间：
2016
影响因子：
5.6
通讯作者：
Bentley AR
中科院分区：
文献类型：
--
作者：
Camargo AV;Mott R;Gardner KA;Mackay IJ;Corke F;Doonan JH;Kim JT;Bentley AR
适当的发育过渡时间对于使许多作物适应当地气候条件至关重要。因此，了解物候学不同方面的遗传基础可能有助于突出支持适应的机制，并对气候变化的育种产生影响。对于面包小麦(Triticum Aestivum)来说，营养生长到生殖生长的转变、叶片衰老的开始和速率以及不同开花和灌浆阶段的相对时间都对植株表现有贡献。在这项研究中，我们在Smart house条件下筛选了一个大型的、多创建者的“NIAB精英魔术”小麦群体，以评估影响欧洲精英品种发育阶段时间的遗传因素。这组重组自交系来自8个亲本，这些亲本目前或最近已经在英国和北欧进行了商业种植。我们在Smart house条件下对种群及其双亲进行了详细的时间表型分析，试图找出与衰老关键物候阶段的时间变化相关的已知或新的数量性状基因座。这一分析结果导致检测到与新性状的QTL互作，如从旗叶叶舌上方出现半个穗到旗叶开始衰老的时间，以及与植株形态相关的性状，如茎高。此外，几个性状与旗叶衰老的开始时间之间也存在很强的相关性。这项工作建立了系统表型遗传非结构化群体的价值，以揭示商业小麦形态变异的遗传结构。
The appropriate timing of developmental transitions is critical for adapting many crops to their local climatic conditions. Therefore, understanding the genetic basis of different aspects of phenology could be useful in highlighting mechanisms underpinning adaptation, with implications in breeding for climate change. For bread wheat (Triticum aestivum), the transition from vegetative to reproductive growth, the start and rate of leaf senescence and the relative timing of different stages of flowering and grain filling all contribute to plant performance. In this study we screened under Smart house conditions a large, multi-founder “NIAB elite MAGIC” wheat population, to evaluate the genetic elements that influence the timing of developmental stages in European elite varieties. This panel of recombinant inbred lines was derived from eight parents that are or recently have been grown commercially in the UK and Northern Europe. We undertook a detailed temporal phenotypic analysis under Smart house conditions of the population and its parents, to try to identify known or novel Quantitative Trait Loci associated with variation in the timing of key phenological stages in senescence. This analysis resulted in the detection of QTL interactions with novel traits such the time between “half of ear emergence above flag leaf ligule” and the onset of senescence at the flag leaf as well as traits associated with plant morphology such as stem height. In addition, strong correlations between several traits and the onset of senescence of the flag leaf were identified. This work establishes the value of systematically phenotyping genetically unstructured populations to reveal the genetic architecture underlying morphological variation in commercial wheat.
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DOI：
10.1534/g3.114.012963
发表时间：
2014-09-18
期刊：
G3 (Bethesda, Md.)
影响因子：
--
作者：
Mackay IJ;Bansept-Basler P;Barber T;Bentley AR;Cockram J;Gosman N;Greenland AJ;Horsnell R;Howells R;O'Sullivan DM;Rose GA;Howell PJ
通讯作者：
Howell PJ
DOI：
10.1007/s11032-014-0034-2
发表时间：
2014
期刊：
Molecular breeding : new strategies in plant improvement
影响因子：
--
作者：
Kiss T;Balla K;Veisz O;Láng L;Bedő Z;Griffiths S;Isaac P;Karsai I
通讯作者：
Karsai I
影响因子：
7
作者：
Schafer, JL;Graham, JW
通讯作者：
Graham, JW
影响因子：
2
作者：
KEMPTON, RA
通讯作者：
KEMPTON, RA
影响因子：
5.8
作者：
Huang, B. Emma;George, Andrew W.
通讯作者：
George, Andrew W.