Gametoclonal variation in anther culture-derived rice plants: Mutation breeding of new elite lines showing short culm and early heading

M. Yamagishi, T. Shimada, H. Niizeki, M. Otani, T. Koba, T. Handa, Y. Takamura, E. Shimizu, M. Higashi, K. Nakamura, K. Arakawa, N. Matsumoto

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Abstract

Short-culm and early heading mutant lines obtained from the anther culture of a japonica-type rice cultivar Koshihikari were analyzed to confirm genetic stability of mutated traits, and their agronomic characters evaluated to develop new elite lines. Mutated traits were stably transmitted by self-pollination into at least the ninth selfed progenies. Genetic analysis of F2 populations from the cross between each of six mutated lines and cv. Koshihikari revealed culm length and heading date to have continuous variation in five of six F2 populations. In one F2 population plants with a short culm segregated in 1:3 ratio. After evaluation of field performance and eating quality in 20 mutant lines, two elite lines were obtained. One line showed short culm and early heading and another line exhibited early heading compared to the original cultivar Koshihikari. In addition, both lines showed high eating quality.

Original languageEnglish
Pages (from-to)269-275
Number of pages7
JournalJournal of Genetics and Breeding
Volume50
Issue number3
Publication statusPublished - 1 Sep 1996

Keywords

  • Agronomic traits
  • Mutants
  • Oryza sativa

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    Yamagishi, M., Shimada, T., Niizeki, H., Otani, M., Koba, T., Handa, T., Takamura, Y., Shimizu, E., Higashi, M., Nakamura, K., Arakawa, K., & Matsumoto, N. (1996). Gametoclonal variation in anther culture-derived rice plants: Mutation breeding of new elite lines showing short culm and early heading. Journal of Genetics and Breeding, 50(3), 269-275.