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Mapping quantitative trait loci for grain yield and yield related traits in a hexaploid winter wheat doubled haploid population
| Content Provider | Semantic Scholar |
|---|---|
| Author | Zhou, Yaopeng |
| Copyright Year | 2015 |
| Abstract | Title of Document: MAPPING QUANTITATIVE TRAIT LOCI FOR GRAIN YIELD AND YIELD RELATED TRAITS IN A HEXAPLOID WINTER WHEAT DOUBLED HAPLOID POPULATION Yaopeng Zhou, Doctor of Philosophy, 2015 Directed By: Dr. Jose M. Costa, Professor Emeritus Department of Plant Science and Landscape Architecture Improving wheat grain yield potential is imperative to match the increasing food demand associated with a fast growing population. Genetic and modeling approaches were employed to investigate the genetic basis and phenotype network regarding grain yield and yield related traits in a soft red winter wheat doubled haploid population. The population and two parents were evaluated in five year-location trials in the USA and genotyped by high throughput DNA markers including simple sequence repeat (SSR) and single nucleotide polymorphism (SNP). Bi-parental linkage mapping identified a number of QTLs for grain yield and yield related traits among which sixty were for grain yield components (GYLD, grain yield; SPSM, spikes per square meter; TGW, thousand grain weight; GPS, grains per spike; GWPS, grain weight per spike), seventy four were for plant architecture (PHT, plant height; FLL, flag leaf length; FLW, flag leaf width; FLA, flag leaf area; FLS, flag leaf shape or length/width ratio), and one hundred and nine were for spike morphology (SL, spike length; TSN, total spikelet number per spike; FSN, fertile spikelet number per spike; SSN, sterile spikelet number per spike; SC, spike compactness; GSP, grains per spikelet). In addition, structural equation modeling is described to construct a phenotype network. It revealed that GSP and FSN may mediate yield component compensation. Furthermore, doubled haploid lines DH96 and DH84 may have potential as new high-yielding cultivars for the Mid-Atlantic region. MAPPING QUANTITATIVE TRAIT LOCI FOR GRAIN YIELD AND YIELD RELATED TRAITS IN A HEXAPLOID WINTER WHEAT DOUBLED HAPLOID POPULATION |
| File Format | PDF HTM / HTML |
| DOI | 10.13016/M2264V |
| Alternate Webpage(s) | http://drum.lib.umd.edu/bitstream/handle/1903/17063/Zhou_umd_0117E_16511.pdf?isAllowed=y&sequence=1 |
| Alternate Webpage(s) | https://doi.org/10.13016/M2264V |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
