PROBLEM TO BE SOLVED: To provide a novel means for shortening one breeding cycle of Rosaceae fruit tree, such as apple or pear.SOLUTION: Provided is a method comprises steps of inoculating a recombinant apple latent spherical viral RNA comprising both a polynucleotide which express an Arabidopsis thaliana FT gene and a polynucleotide which silences Rosaceae fruit tree TFL1 gene, into a cotyledon of a Rosaceae fruit tree seedling immediately after rooting seeding this infection seed to cultivate and pollinating a blooming flower, allowing the fruits which comprise a next-generation seed to come to fruition within 12 months after seeding.COPYRIGHT: (C)2015,JPO&INPIT【課題】リンゴやナシ等のバラ科果樹の1世代の期間を短縮するための新しい手段を提供する。【解決手段】シロイヌナズナFT遺伝子を発現するポリヌクレオチドとバラ科果樹TFL1遺伝子を発現抑制するポリヌクレオチドの両方を含む組換えリンゴ小球形潜在ウイルスRNAを発根直後のバラ科果樹実生の子葉に接種し、この感染種子を播種して育成し、開花した花に受粉する工程を含み、播種から12カ月以内に次世代種子を含む果実を結実させる。【選択図】図6
