Genetic analysis of heading time unstability in wheat and barley
Project/Area Number |
16H04863
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Science in genetics and breeding
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Research Institution | Okayama University |
Principal Investigator |
KATO Kenji 岡山大学, 環境生命科学研究科, 教授 (40161096)
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Co-Investigator(Kenkyū-buntansha) |
西田 英隆 岡山大学, 環境生命科学研究科, 准教授 (30379820)
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Project Period (FY) |
2016-04-01 – 2019-03-31
|
Project Status |
Completed (Fiscal Year 2018)
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Budget Amount *help |
¥16,900,000 (Direct Cost: ¥13,000,000、Indirect Cost: ¥3,900,000)
Fiscal Year 2018: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2017: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2016: ¥8,060,000 (Direct Cost: ¥6,200,000、Indirect Cost: ¥1,860,000)
|
Keywords | コムギ / オオムギ / 出穂期 / 不安定性 / 遺伝子 / 育種学 / 分子遺伝学 |
Outline of Final Research Achievements |
Growth and yield of crops are significantly affected by changing global environment. Heading time is one of the important traits to achieve the maximum yield in wheat and barley, but is becoming unstable mainly due to yearly fulctuation of temperature throughout the growing season. In this study, we first identified wheat and barley cultivars whose heading time varies largely depending on the year, and then identified the causal gene(s). A wheat breeding line 'Chogokuwase' is an extra early heading line and its heading date is accelerated by warmer temperature in wheat. By map based approach, using segregating populations derived from 'Chogokuwase' x 'Kinuiroha', we identified that the causal gene is PCL1 and triple recessive homozygote become eatra early heading. In barley, HvPhyC mutant allele, which is commonly found in the Japanese early maturity cultivars, proved to cause unstability of heading time depending on the temperature condition during winter.
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Academic Significance and Societal Importance of the Research Achievements |
出穂期はムギ類の生産性に直結する重要な形質であり,世界の研究者が遺伝研究を精力的に展開している.しかしながら,気候変動下での出穂期不安定性に着目した研究はほとんどなく,学術的に重要な発見をできたと考えている.また,出穂期不安定化遺伝子を特定できたことにより,今後は育種現場においてDNAマーカー選抜により希望遺伝子型を容易に選抜できるので,地球規模での温暖化や気候の不安定化に対応可能なムギ類新品種の育成を加速化できると考えている.
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Report
(4 results)
Research Products
(27 results)
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[Journal Article] Effects of Rht-B1 and Ppd-D1 loci on pollinator traits in wheat.2019
Author(s)
Takashi Okada, J.E.A. Ridma M. Jayasinghe, Paul Eckermann, Nathan S. Watson-Haigh, Patricia Warner, Margaret Pallotta, Yonina Hendrikse, Mathieu Baes, Elise Tucker, Hamid Laga, Kenji Kato, Marc Albertsen, Petra Wolters, Delphine Fleury, Ute Baumann, Ryan Whitford
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Journal Title
Theoretical and Applied Genetics
Volume: online first
Issue: 7
Pages: 1-15
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Loss-of-function mutations in three homoeologous PHYTOCLOCK 1 genes in common wheat are associated with the extra-early flowering phenotype.2016
Author(s)
Mizuno, N., Kinoshita, M., Kinoshita, S., Nishida, H., Fujita, M., Kato, K., Murai, K., Nasuda, S.
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Journal Title
PLoS One
Volume: 11(10)
Issue: 10
Pages: e0165618-e0165618
DOI
NAID
Related Report
Peer Reviewed / Open Access
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