Development and characterization of a strawberry MAGIC population derived from crosses with six strawberry cultivars

  • Wada Takuya
    Fukuoka Agricultural and Forestry Research Center
  • Oku Koichiro
    Fukuoka Agricultural and Forestry Research Center
  • Nagano Soichiro
    Department of Frontier Research, Kazusa DNA Research Institute
  • Isobe Sachiko
    Department of Frontier Research, Kazusa DNA Research Institute
  • Suzuki Hideyuki
    Department of Frontier Research, Kazusa DNA Research Institute
  • Mori Miyuki
    Fukuoka Agricultural and Forestry Research Center
  • Takata Kinuko
    Fukuoka Agricultural and Forestry Research Center
  • Hirata Chiharu
    Fukuoka Agricultural and Forestry Research Center
  • Shimomura Katsumi
    Fukuoka Agricultural and Forestry Research Center
  • Tsubone Masao
    Fukuoka Agricultural and Forestry Research Center
  • Katayama Takao
    Fukuoka Agricultural and Forestry Research Center Present address: Yame Agricultural Dissemination Center
  • Hirashima Keita
    Fukuoka Agricultural and Forestry Research Center
  • Uchimura Yosuke
    Fukuoka Agricultural and Forestry Research Center Present address: Asakura Agricultural Dissemination Center
  • Ikegami Hidetoshi
    Fukuoka Agricultural and Forestry Research Center Present address: Buzen branch, Fukuoka Agriculture and Forestry Research Center
  • Sueyoshi Takayuki
    Fukuoka Agricultural and Forestry Research Center
  • Obu Ko-ichi
    Fukuoka Agricultural and Forestry Research Center Present address: Fukuoka Prefectural Office
  • Hayashida Tatsuya
    Fukuoka Agricultural and Forestry Research Center
  • Shibato Yasushi
    Fukuoka Agricultural and Forestry Research Center Present address: Buzen branch, Fukuoka Agriculture and Forestry Research Center

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<p>A strawberry Multi-parent Advanced Generation Intercrosses (MAGIC) population, derived from crosses using six strawberry cultivars was successfully developed. The population was composed of 338 individuals; genome conformation was evaluated by expressed sequence tag-derived simple short repeat (EST-SSR) markers. Cluster analysis and principal component analysis (PCA) based on EST-SSR marker polymorphisms revealed that the MAGIC population was a mosaic of the six founder cultivars and covered the genomic regions of the six founders evenly. Fruit quality related traits, including days to flowering (DTF), fruit weight (FW), fruit firmness (FF), fruit color (FC), soluble solid content (SC), and titratable acidity (TA), of the MAGIC population were evaluated over two years. All traits showed normal transgressive segregation beyond the founder cultivars and most traits, except for DTF, distributed normally. FC exhibited the highest correlation coefficient overall and was distributed normally regardless of differences in DTF, FW, FF, SC, and TA. These facts were supported by PCA using fruit quality related values as explanatory variables, suggesting that major genetic factors, which are not influenced by fluctuations in other fruit traits, could control the distribution of FC. This MAGIC population is a promising resource for genome-wide association studies and genomic selection for efficient strawberry breeding.</p>

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