Detection of maturity loci in soybean under controlled environements

2017 Fiscal Year Final Research Report

• Project/Area Number: 16K14831
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Science in genetics and breeding
• Research Institution: National Agriculture and Food Research Organization
• Principal Investigator: Ishimoto Masao 国立研究開発法人農業・食品産業技術総合研究機構, 次世代作物開発研究センター, 研究領域長 (20355134)
• Co-Investigator(Renkei-kenkyūsha): OGISO Eri 国立研究開発法人農業・食品産業技術総合研究機構, 次世代作物開発研究センター・畑作物研究領域, 研究員 (00646929)
• Project Period (FY): 2016-04-01 – 2018-03-31
• Keywords: 早晩性 / 開花期関連遺伝子 / 適応性 / ダイズミニコアコレクション

Outline of Final Research Achievements

Soybean is a short day plant, and its response to day length is one of important agronomic traits related to yield performance. In this study, a candidate gene involved in flowering time was isolated under a controlled environment, and the delay of flowering time due to functional defect of the candidate gene was confirmed using soybean mutants. In addition, we investigated the sequence diversity of this gene and the flowering time under the 12 hours photoperiod condition in the soybean mini-core collection. As a result, we found several genetic resources with decreased susceptibility to short day length. Since mutation of this gene could not be confirmed in these genetic resources, and genetic analysis of the segregating population with ordinary cultivars suggested the involvement of different genetic factors, so that several different genetic factors are thought to be involved in the expansion of soybean cultivation in low latitudes.

Free Research Field

植物分子育種学