A Recessive Gene Responsible for Green Coloration in Winter, which is Heterozygous in Sugi Cultivars, Measa, Kirsima-Measa and Ao-Sugi

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  • メアサ,キリシマメアサおよびアオスギのミドリスギ劣性遺伝子
  • メアサ , キリシマメアサ オヨビ アオスギ ノ ミドリスギ レッセイ イデンシ

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CHIBA1) and FUKUHARA2) reported that winter-green in a horticultural variety of sugi, Cryptomeria japonica D. Don form. viridis hort. is controlled by a recessive gene. Three sugi cultivars, Measa, Kirisima-measa and Ao-sugi which were propagated by cuttings of the scions taken from a scion bank at the Institute of Radiation Breeding, were selfed or crossed with two individuals (Midori-sugi (5) and GR) being homozygous for the gene. After selfing of the cultivars, segregation of the seedlings with winter coloration of red vs. green as 3:1, and after outcrossing, the ratio of red vs. green as 1:1 were proved. Therefore, some of the individuals among these cultivars seem to be heterozygous for the recessive gene.

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