Broadening the Genetic Diversity of Common and Durum Wheat for Abiotic Stress Tolerance Breeding

Tsujimoto, Hisashi; Sohail, Quahir; Matsuoka, Yoshihiro

doi:10.1007/978-4-431-55675-6_25

Cited by 20 publications

(38 citation statements)

References 4 publications

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“…Here, we evaluated the materials selected from the MSD population created by crosses between cultivated wheat and 43 synthetic wheat lines derived from Ae. tauschii ( Tsujimoto et al 2015 ).…”

Section: Discussionmentioning

confidence: 99%

“…tauschii because the morphology of this wild diploid species is too different from that of bread wheat. SHWs retain wild morphology, such as tough glumes ( Okamoto et al 2012 ), which precludes threshing and thus the measuring of yield-related characteristics ( Tsujimoto et al 2015 ). Synthetic derivative lines, which originate from crosses between SHWs and bread wheat cultivars, are a better choice to uncover the variation in Ae.…”

Section: Introductionmentioning

confidence: 99%

“…tauschii for bread wheat breeding, we produced multiple synthetic derivatives (MSD) populations, in which the interspecific variation of Ae. tauschii was compiled in the genetic background of a certain bread wheat cultivar ( Gorafi et al 2016 , Tsujimoto et al 2015 ).…”

Section: Introductionmentioning

confidence: 99%

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Wheat multiple synthetic derivatives: a new source for heat stress tolerance adaptive traits

et al. 2017

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Heat stress is detrimental to wheat (Triticum aestivum L.) productivity. In this study, we aimed to select heat-tolerant plants from a multiple synthetic derivatives (MSD) population and evaluate their agronomic and physiological traits. We selected six tolerant plants from the population with the background of the cultivar ‘Norin 61’ (N61) and established six MNH (MSD population of N61 selected as heat stress-tolerant) lines. We grew these lines with N61 in the field and growth chamber. In the field, we used optimum and late sowings to ensure plant exposure to heat. In the growth chamber, in addition to N61, we used the heat-tolerant cultivars ‘Gelenson’ and ‘Bacanora’. We confirmed that MNH2 and MNH5 lines acquired heat tolerance. These lines had higher photosynthesis and stomata conductance and exhibited no reduction in grain yield and biomass under heat stress compared to N61. We noticed that N61 had relatively good adaptability to heat stress. Our results indicate that the MSD population includes the diversity of Aegilops tauschii and is a promising resource to uncover useful quantitative traits derived from this wild species. Selected lines could be useful for heat stress tolerance breeding.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Wheat multiple synthetic derivatives: a new source for heat stress tolerance adaptive traits

et al. 2017

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“…tauschii in the genetic background of the elite cultivars. Interestingly, multiple synthetic derivatives population (MSD) proposed by Tsujimoto (2010) have been recently created by backcrossing an elite Japanese cultivar Norin 61 and 43 synthetic lines (Tsujimoto et al , 2015). The 43 synthetic lines used for the creating of the MSD population are among the 47 lines studied here.…”

Section: Discussionmentioning

confidence: 99%

Genetic variation and association mapping of grain iron and zinc contents in synthetic hexaploid wheat germplasm

Gorafi

Ishii

Kim

et al. 2016

Plant Genet. Resour.

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Fe and Zn deficiency are widespread worldwide. As wheat is the primary food for the majority of the world people, producing wheat grains with high mineral content can ameliorate the problem of mineral hunger. However, the genetic variation available for breeders is limited. The aim of this study was to assess the genetic variation in grain Fe and Zn contents in 47 synthetic hexaploid wheats and to identify marker loci associated with Fe and Zn contents. We measured the grain Fe and Zn contents using inductively coupled plasma atomic emission spectroscopy and performed genotyping using SSR markers. The results showed considerable genetic variation for these minerals. We identified three lines with high Fe and Zn contents and six quantitative trait loci of which three were associated with Fe content and the other three with Zn content. The minerals showed positive phenotypic and genotypic correlation and high heritability (>60%). The ratio of the σ2g to the σ2g×e was ≥1 for the two mineral contents indicating that breeding for increasing mineral content within the synthetic lines is possible. The synthetic wheat lines identified in this study are valuable genetic resources, and can be utilized for breeding wheat cultivars with high mineral content.

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“…Global genebanks have collected approximately 2 million distinct plant accessions, of which a high percentage are landraces and wild relatives of crops (Commission on Genetic Resources for Food and Agriculture, 2010). The prospect of using such germplasm repositories as sources of natural variation for tolerance to environmental stresses such as salt tolerance has been widely discussed (Massawe et al ., ; Tsujimoto et al ., ; Hanin et al ., ; Ali et al ., ; Buchanan‐Wollaston et al ., ; Dwivedi et al ., ; Gascuel et al ., ; Mabhaudhi et al ., ; Zhang et al ., ; Cheng, ). Assessments of genetic diversity have been performed for various crop germplasm collections, such as maize (Whitt et al ., ; Liu et al ., ; Patto et al ., ; Laborda et al ., ; Warburton et al ., ; Prasanna, ; Zheng et al ., ; Kuhn et al ., ), wheat (Laido et al ., ; Nielsen et al ., ), rice (Cho et al ., ; Temnykh et al ., ; McCouch et al ., ; Garris et al ., ; Xu et al ., ; Thomson et al ., ), barley (Struss and Plieske, ; Parzies et al ., ; Fernandez et al ., ; Moragues et al ., ) and tomato (Albrecht et al ., ; Bauchet and Causse, ; Aflitos et al ., ; Pailles et al ., ).…”

Section: Harnessing the Genetic Diversity Of Exotic Germplasmmentioning

confidence: 99%

Salt stress under the scalpel – dissecting the genetics of salt tolerance

et al. 2019

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Summary Salt stress limits the productivity of crops grown under saline conditions, leading to substantial losses of yield in saline soils and under brackish and saline irrigation. Salt tolerant crops could alleviate these losses while both increasing irrigation opportunities and reducing agricultural demands on dwindling freshwater resources. However, despite significant efforts, progress towards this goal has been limited, largely because of the genetic complexity of salt tolerance for agronomically important yield‐related traits. Consequently, the focus is shifting to the study of traits that contribute to overall tolerance, thus breaking down salt tolerance into components that are more genetically tractable. Greater consideration of the plasticity of salt tolerance mechanisms throughout development and across environmental conditions furthers this dissection. The demand for more sophisticated and comprehensive methodologies is being met by parallel advances in high‐throughput phenotyping and sequencing technologies that are enabling the multivariate characterisation of vast germplasm resources. Alongside steady improvements in statistical genetics models, forward genetics approaches for elucidating salt tolerance mechanisms are gaining momentum. Subsequent quantitative trait locus and gene validation has also become more accessible, most recently through advanced techniques in molecular biology and genomic analysis, facilitating the translation of findings to the field. Besides fuelling the improvement of established crop species, this progress also facilitates the domestication of naturally salt tolerant orphan crops. Taken together, these advances herald a promising era of discovery for research into the genetics of salt tolerance in plants.

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Broadening the Genetic Diversity of Common and Durum Wheat for Abiotic Stress Tolerance Breeding

Cited by 20 publications

References 4 publications

Wheat multiple synthetic derivatives: a new source for heat stress tolerance adaptive traits

Wheat multiple synthetic derivatives: a new source for heat stress tolerance adaptive traits

Genetic variation and association mapping of grain iron and zinc contents in synthetic hexaploid wheat germplasm

Salt stress under the scalpel – dissecting the genetics of salt tolerance

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