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  1. Vol. 37 No. 3, p. 963-965
     
    Received: July 15, 1996
    Published: May, 1997


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doi:10.2135/cropsci1997.0011183X003700030043x

Genetic Analysis of Plant Regeneration from Seed-Derived Calli in Rice (Oryza sativa L.)

  1. Yoshinobu Takeuchi,
  2. Toshinori Abe and
  3. Takeo Sasahara 
  1. Laboratory of Plant Breeding, Faculty of Agriculture, Yamagata Univeristy, Tsuruoka 997, Japan

Abstract

Abstract

The ability of rice (Oryza sativa L.) to regenerate plantlets from calli differs among different cultivars. The present experiments were~ implemented to examine genetic characteristics of plant regeneration from calli in different rice cultivars. The rate of plant regeneration from mature seed-derived calli was higher in Tadukan (indica) than in Norin 1 (japonica). The inheritance mode of plant regeneration ability was analyzed in populations of the F2 generation from Norin 1 × Tadukan and in those of the back-crossed generation (FIBCI) from Norin 1 × F1 plants (Norin 1 × Tadukan). A Chi-square test in the F2 generation showed a 3 (dominant) : (recessive) segregation ratio for the higher and the lower plant regeneration abilities, respectively. A Chi-square test in the F1BC1 generation showed a 1 (dominant):l (recessive) segregation ratio for the higher and the lower plant regeneration abilities, respectively. Thus, the higher plant regeneration characteristics of Tadukan appear to be regulated by a single dominant gene.

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