Synthetic Hexaploid Wheat: Yesterday, Today, and Tomorrow

Li, Aili; Liu, Dengcai; Yang, Wuyun; Kishii, Masahiro; Mao, Long

doi:10.1016/j.eng.2018.07.001

Cited by 101 publications

(81 citation statements)

References 89 publications

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“…SHW is hexaploid wheat that is created artificially by the introduction of additional genetic resources from tetraploid and diploid relatives to develop wheat with a broader genetic basis. SHW lines are quite useful in introducing agronomically needed traits into common wheat from wild genetic relatives [29]. In this experiment, SHW lines were selected for root phenotyping with the accession Largo selected as the reference accession based on SHW biomass uniqueness and density [29].…”

Section: Methodsmentioning

confidence: 99%

Variation Analysis of Root System Development in Wheat Seedlings Using Root Phenotyping System

et al. 2020

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Root system architecture is a vital part of the plant that has been shown to vary between species and within species based on response to genotypic and/or environmental influences. The root traits of wheat seedlings are critical for their establishment in soil and evidently linked to plant height and seed yield. However, plant breeders have not efficiently developed the role of RSA in wheat selection due to the difficulty of studying root traits. We set up a root phenotyping platform to characterize RSA in 34 wheat accessions. The phenotyping pipeline consists of the germination paper-based moisture replacement system, image capture units, and root-image processing software. The 34 accessions from two different wheat ploidy levels (hexaploids and tetraploids), were characterized in ten replicates. A total of 19 root traits were quantified from the root architecture generated. This pipeline allowed for rapid screening of 340 wheat seedlings within 10 days. At least one line from each ploidy (6× and 4×) showed significant differences (p < 0.05) in measured traits, except for mean seminal count. Our result also showed a strong correlation (0.8) between total root length, maximum depth and convex hull area. This phenotyping pipeline has the advantage and capacity to increase screening potential at early stages of plant development, leading to the characterization of wheat seedling traits that can be further examined using QTL analysis in populations generated from the examined accessions.

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Section: Methodsmentioning

confidence: 99%

Variation Analysis of Root System Development in Wheat Seedlings Using Root Phenotyping System

et al. 2020

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“…SHW lines have become valuable resources for the genetic improvement of common wheat cultivars (Li et al , 2018). The findings of variation analysis from this study will allow us to investigate segregating mapping populations that will include RILs of M3 and Kulm; and M6 and Opata85.…”

Section: Discussionmentioning

confidence: 99%

“…The hexaploid category was made up of common wheat, spelt wheat and synthetic hexaploid wheat (SHW). In this experiment, SHW lines were selected for root phenotyping with the accession Largo selected as the reference accession based on SHW biomass uniqueness and density (Li et al , 2018). The tetraploid group of accessions consisted of durum ( T. turgidum ssp.…”

Section: Methodsmentioning

confidence: 99%

Assessing Root System Architecture of Wheat Seedlings Using A High-Throughput Root Phenotyping System

Adeleke

Millas

McNeal

et al. 2019

Preprint

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“…Synthetic hexaploid wheats were mainly used for the transfer of genes controlling resistance to biotic stress because of their mostly simple inheritance and ease of detection; but they have also emerged as a valuable resource for enhancing tolerance to abiotic stresses, nutritional value and grain quality attributes (van Ginkel and Ogbonnaya 2007;Li et al 2018). However, new avenues must be taken for increasing allele diversity and recombination in structured populations to manage the wealth of information available in synthetic wheats.…”

Section: Discussionmentioning

confidence: 99%

Genetic analysis ofAegilops tauschii-derived seedling resistance to leaf rust in synthetic hexaploid wheat

Mohler

Schmolke

Zeller

et al. 2019

Preprint

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Seedling resistance to leaf rust available in the synthetic hexaploid wheat line Syn137 was characterized by means of cytogenetic and linkage mapping. Monosomic analysis located a single dominant gene for leaf rust resistance on chromosome 5D. Molecular mapping not only confirmed this location but also positioned the gene to the distal part of the long arm of chromosome 5D. A test of allelism showed that the gene, tentatively named LrSyn137, is independent but closely linked to Lr1. It appears that Syn137 is occasionally heterogeneous for Lr1 since the analysis of the Lr1-specific marker RGA567-5 in the mapping population indicated the presence of Lr1. Syn137 represents another source of genetic variation that can be useful for the diversification of leaf rust resistance in wheat cultivars.

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Synthetic Hexaploid Wheat: Yesterday, Today, and Tomorrow

Cited by 101 publications

References 89 publications

Variation Analysis of Root System Development in Wheat Seedlings Using Root Phenotyping System

Variation Analysis of Root System Development in Wheat Seedlings Using Root Phenotyping System

Assessing Root System Architecture of Wheat Seedlings Using A High-Throughput Root Phenotyping System

Genetic analysis ofAegilops tauschii-derived seedling resistance to leaf rust in synthetic hexaploid wheat

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