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

Laboratory of Plant Breeding, Faculty of Agriculture, Yamagata Univeristy, Tsuruoka 997, Japan

^* Corresponding author.

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 x Tadukan and in those of the back-crossed generation (FIBCI) from Norin 1 x F₁ plants (Norin 1 x 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.

Received for publication July 15, 1996.

This article has been cited by other articles:

				Y. Takeuchi, T. Abe, and T. Sasahara RFLP Mapping of QTLs Influencing Shoot Regeneration from Mature Seed-Derived Calli in Rice Crop Sci., January 1, 2000; 40(1): 245 - 247. [Abstract] [Full Text]