Bunketsu-waito, one of the tillering dwarfs, is controlled by a single recessive gene in rice (Oryza sativa L.)

Masahiko Maekawa, Itsuro Takamure, Nisar Ahmed, Jyunko Kyozuka

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Bunketsu-waito, one of the tillering dwarfs, was reported to be controlled by triplicate genes, d3, d4 and d5. Although a segregation ratio fitting to 15:1 for bunketsu-waito was observed in the F2s of the crosses between H-52 (bunketsu-waito) and genetic marker lines No.201 or H-61, the backcross of (H-52 x H-61) F1 x H-52 showed a segregation ratio of 1:1 for normal vs. bunketsu-waito and the reciprocal backcross showed a decrease of the segregation ratio for bunketsu-waito from 1:1. These results demonstrated that bunketsu-waito was controlled by a single recessive gene and suggested that the abnormal segregation of bunketsu-waito in the F2 of H-52 x H-61 was caused by a gametophyte gene linked to a gene for bunketsu-waito. Furthermore, the decrease of the segregation ratio of bunketsu-waito in the F2 of H-125 x Kasalath was also observed and was considered to be due to a gametophyte gene, based on the results of reciprocal backcrossing between H-125 and the F1 of H-125 x Kasalath. Thus, it was assumed that bunketsu-waito was controlled by a single recessive gene, and that the bunketsu-waito gene was mapped between RM 587 and RM 4608 on chromosome 6, based on linkage analysis using SSR markers.

Original languageEnglish
Pages (from-to)193-196
Number of pages4
JournalBreeding Science
Volume55
Issue number2
DOIs
Publication statusPublished - Jun 2005

Fingerprint

Recessive Genes
recessive genes
tillering
Oryza sativa
rice
Genes
genes
Chromosomes, Human, Pair 6
Inbreeding
backcrossing
Genetic Markers
linkage (genetics)
Oryza
chromosomes
genetic markers

Keywords

  • Gametophyte gene
  • Reciprocal backcross
  • Rice
  • Segregation ratio
  • Tillering dwarf

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Plant Science

Cite this

Bunketsu-waito, one of the tillering dwarfs, is controlled by a single recessive gene in rice (Oryza sativa L.). / Maekawa, Masahiko; Takamure, Itsuro; Ahmed, Nisar; Kyozuka, Jyunko.

In: Breeding Science, Vol. 55, No. 2, 06.2005, p. 193-196.

Research output: Contribution to journalArticle

Maekawa, Masahiko ; Takamure, Itsuro ; Ahmed, Nisar ; Kyozuka, Jyunko. / Bunketsu-waito, one of the tillering dwarfs, is controlled by a single recessive gene in rice (Oryza sativa L.). In: Breeding Science. 2005 ; Vol. 55, No. 2. pp. 193-196.
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