Improvement of torenia (Torenia fournieri) flower through mutations causing doubled, large and apparent radially-symmetric flowers and molecular mechanisms responsible for those mutations.

2016 Fiscal Year Final Research Report

• Project/Area Number: 25292026
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Horticultural science
• Research Institution: National Agriculture and Food Research Organization
• Principal Investigator: Nishijima Takaaki 国立研究開発法人農業・食品産業技術総合研究機構, 野菜花き研究部門・花き遺伝育種研究領域, 主席研究員 (60355708)
• Co-Investigator(Kenkyū-buntansha): 仁木 智哉 国立研究開発法人農業・食品産業技術総合研究機構, 花き研究所花き研究領域, 主任研究員 (70355709)
• Project Period (FY): 2013-04-01 – 2017-03-31
• Keywords: 変異誘発 / トランスポゾン / 観賞性 / 花形 / 花色

Outline of Final Research Achievements

The “Flecked” mutant of torenia (Torenia fournieri Lind. ex Fourn.) , which has highly mobile transposon Ttf1, generates new mutants in the selfed progeny in high probability. We isolated various mutants including the ones bearing doubled flowers, large flowers and flowers partially with radially-symmetrical appearance; those traits are generally seen in highly-bred floricultural plants. Genes responsible for those mutations were identified and analyzed to elucidate the molecular mechanisms conferring the mutated traits. Those mutations were integrated by cross pollination to obtain the lines bearing doubled and large flowers with radially-symmetrical appearance.

Free Research Field

花き園芸学