Effect of salt tolerance on biomass production in a large population of sorghum accessions
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- Yamazaki Kiyoshi
- Graduate School of Agricultural and Life Sciences, The University of Tokyo
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- Ishimori Motoyuki
- Graduate School of Agricultural and Life Sciences, The University of Tokyo
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- Kajiya-Kanegae Hiromi
- Graduate School of Agricultural and Life Sciences, The University of Tokyo
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- Takanashi Hideki
- Graduate School of Agricultural and Life Sciences, The University of Tokyo
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- Fujimoto Masaru
- Graduate School of Agricultural and Life Sciences, The University of Tokyo Breeding Genomics, The University of Tokyo
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- Yoneda Jun-ichi
- Earthnote Co. Ltd.
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- Yano Kentaro
- Department of Life Sciences, School of Agriculture, Meiji University
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- Koshiba Taichi
- Earthnote Co. Ltd.
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- Tanaka Ryokei
- Graduate School of Agricultural and Life Sciences, The University of Tokyo
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- Iwata Hiroyoshi
- Graduate School of Agricultural and Life Sciences, The University of Tokyo
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- Tokunaga Tsuyoshi
- Earthnote Co. Ltd.
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- Tsutsumi Nobuhiro
- Graduate School of Agricultural and Life Sciences, The University of Tokyo
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- Fujiwara Toru
- Graduate School of Agricultural and Life Sciences, The University of Tokyo
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Abstract
<p>Salinity causes major reductions in cultivated land area, crop productivity, and crop quality, and salt-tolerant crops have been required to sustain agriculture in salinized areas. The annual C4 crop plant Sorghum bicolor (L.) Moench is salt tolerant, with large variation among accessions. Sorghum’s salt tolerance is often evaluated during early growth, but such evaluations are weakly related to overall performance. Here, we evaluated salt tolerance of 415 sorghum accessions grown in saline soil (0, 50, 100, and 150 mM NaCl) for 3 months. Some accessions produced up to 400 g per plant of biomass and showed no growth inhibition at 50 mM NaCl. Our analysis indicated that the genetic factors that affected biomass production under 100 mM salt stress were more different from those without salt stress, comparing to the differences between those under 50 mM and 100 mM salt stress. A genome-wide association study for salt tolerance identified two single-nucleotide polymorphisms (SNPs) that were significantly associated with biomass production, only at 50 mM NaCl. Additionally, two SNPs were significantly associated with salt tolerance index as an indicator for growth response of each accession to salt stress. Our results offer candidate genetic resources and SNP markers for breeding salt-tolerant sorghum.</p>
Journal
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- Breeding Science
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Breeding Science 70 (2), 167-175, 2020
Japanese Society of Breeding
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Details 詳細情報について
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- CRID
- 1390285300152147584
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- NII Article ID
- 130007833812
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- NII Book ID
- AA11317194
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- ISSN
- 13473735
- 13447610
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- NDL BIB ID
- 030395720
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed