Development of a new selection method and quality improvement of sugary-1 rice mutants
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- Hamada Shigeki
- National Agriculture and Food Research Organization (NARO), Institute of Crop Science Present address: Faculty of Agriculture and Life Science, Hirosaki University
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- Suzuki Keitaro
- National Agriculture and Food Research Organization (NARO), Institute of Crop Science
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- Suzuki Yasuhiro
- National Agriculture and Food Research Organization (NARO), Institute of Crop Science
書誌事項
- タイトル別名
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- Development of a new selection method and quality improvement of <i>sugary-1</i> rice mutants
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抄録
Brown rice of sugary-1 mutants has a wrinkled character because of the presence of phytoglycogen instead of starch in the inner part of the endosperm. Because the wrinkled phenotype was used as a sole selection marker for progeny of the sugary-1 strain, identification of mutant seeds with improved appearance is very difficult. We found that sugary-1 varieties contained not only phytoglycogen but also free glucose in the endosperm, and these were positively correlated. In the segregated F2 seeds that resulted from crossing Hokurikutou237 (sugary-1) and Koshihikari strains, glucose and phytoglycogen were also significantly correlated. Thus, we identified new sugary types with improved appearance from these progeny using glucose measurements. The F4 seeds of the improved strain had moderate phytoglycogen contents and seed germination characteristics. Native-PAGE showed that pullulanase activity in the improved strain increased in developing seeds compared with Hokurikutou237, although isoamylase activity was extremely low and similar to that in sugary-1 types. The new selection method in this study efficiently aids the development of improved sugary rice types that lack the wrinkled phenotype.
収録刊行物
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- Breeding Science
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Breeding Science 63 (5), 461-467, 2014
日本育種学会
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詳細情報 詳細情報について
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- CRID
- 1390282679699880448
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- NII論文ID
- 130004146410
- 40020012941
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- NII書誌ID
- AA11317194
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- COI
- 1:STN:280:DC%2BC2cnmtVCgtw%3D%3D
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- ISSN
- 13473735
- 13447610
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- NDL書誌ID
- 025335511
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
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- 使用不可