Identification of germplasm and development of molecular markers for breeding of nutritional traits in rice grain

2016 Fiscal Year Final Research Report

• Project/Area Number: 26870116
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Science in genetics and breeding; Plant nutrition/Soil science
• Research Institution: The University of Tokyo
• Principal Investigator: Ohmori Yoshihiro 東京大学, 大学院農学生命科学研究科(農学部), 特任助教 (20398390)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 野生イネ / ミネラル / 遊離アミノ酸 / 植物育種学 / 植物栄養学

Outline of Final Research Achievements

Minerals and amino acids in grains are important as nutrition. Increasing a concentration of minerals and amino acid in grains are expected to improve nutritional conditions not only for plant themselves but human living who eating crops. In this study, I focused on genetic factors in wild rice that can improve mineral concentrations or amino acid concentrations in rice grains.
In order to identify genetic factors from wild rice, I used 6 wild rice introguression lines as a source of wild rice germplasm and performed large scale screening of their grain traits. I could find wild rice introguression lines that had high iron or zinc concentration and high lysine or isoleucine concentration in grains. Furthermore, I could develop molecular markers that link high iron concentration in rice grain.
Germplasm and molecular markers identified and developed in this study would be a important tools for breeding of rice grain nutrition in the future.

Free Research Field

植物分子育種学