Field performance and cytology of protoplast-derived rice (Oryza sativa): high yield and low degree of variation of four japonica cultivars

H. Ogura, Junko Kyozuka, Y. Hayashi, T. Koba, K. Shimamoto

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

Protoplast-derived rice plants of four Japanese cultivars, Nipponbare, Fujisaka 5, Norin 14 and Iwaimochi were individually cultivated in a submerged paddy field. They exhibited more stems, which resulted in more panicles than respective control plants. Other characteristics of protoplast-derived plants were (compared with controls): a slightly shorter or similar culm length, fewer spikelets per panicle, slightly lower seed fertility and similar or lighter 1,000 kernel weight. Grain yield of protoplast-derived plants was more than that of respective control plants in four cultivars. The cause of the higher yield of protoplast-derived plants seems to be mainly due to increased panicle number. Among 126 protoplast-derived plants, 1 triploid, 10 tetraploids and 1 aneuploid were found. Furthermore, 11 variants with low seed fertility showing no gross chromosomal anomalies and one plant with abnormal panicles were found. In total, about 80% of protoplastderived plants showed normal characters. The present results are encouraging for the possibility of rice breeding using protoplasts.

Original languageEnglish
Pages (from-to)670-676
Number of pages7
JournalTheoretical and Applied Genetics
Volume74
Issue number5
DOIs
Publication statusPublished - 1987 Sep 1
Externally publishedYes

Keywords

  • Agronomic characters
  • Cytology
  • Protoplast-derived plants
  • Rice cultivars
  • Somaclonal variation

ASJC Scopus subject areas

  • Biotechnology
  • Agronomy and Crop Science
  • Genetics

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