Lines for blast resistance genes with genetic background of Indica Group rice as international differential variety set

Yoshimichi Fukuta, Yohei Koide, Nobuya Kobayashi, Hiroshi Kato, Hiroki Saito, Mary Jeanie Telebanco-Yanoria, Leodegario A. Ebron, Doris Mercado-Escueta, Hiroshi Tsunematsu, Ikuo Ando, Daisuke Fujita, Mitsuhiro Obara, Asami Tomita, Nagao Hayashi, Tokio Imbe

Research output: Contribution to journalArticlepeer-review

Abstract

Twenty-one near-isogenic lines (NILs) for 18 resistance genes—Pia, Pii, Pi3, Pi5(t), Pik-s (two lines from two donors), Pik-m, Pi1, Pik-h, Pik, Pik-p, Pi7(t), Pi9(t), Piz, Piz-5, Piz-t, Pita-2, Pita (three donors) and Pi20(t)—to blast disease were developed through introduction into the genetic background of a semi-dwarf susceptible rice line, US-2, by recurrent backcross breeding. US-2 is derived from a cross between an Indonesian Tropical Japonica Group cultivar, 'Kencana', and an improved high-yielding and semi-dwarf Indica Group cultivar, 'Takanari', bred in Japan. The reactions of US-2 NILs to standard differential blast isolates were clearly defined than previous differential varieties (DVs) such as monogenic lines. US-2 and its NILs are adapted well to wide environmental conditions from temperate to subtropical regions. They will be useful and easier to handle and manage as the first DV set with genetic background of Indica Group rice for pathology studies and as gene sources for rice breeding programme.

Original languageEnglish
Pages (from-to)609-620
Number of pages12
JournalPlant Breeding
Volume141
Issue number5
DOIs
Publication statusPublished - Oct 2022

Keywords

  • blast disease
  • differential variety (DV)
  • Indica Group rice
  • near-isogenic line (NIL)
  • resistance gene

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Genetics
  • Plant Science

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