Effects of tall alleles <i>SD1-in</i> and <i>SD1-ja</i> to the dwarfing allele <i>sd1-d</i> originating from ‘Dee-geo-woo-gen’ on yield and related traits on the genetic background of <i>indica</i> IR36 in rice

• Rana Birendra Bahadur

  Nepal Agriculture Research Council (NARC)

• Kamimukai Misa

  The United Graduate School of Agricultural Sciences, Ehime University

• Bhattarai Mukunda

  Nepal Agriculture Research Council (NARC) The United Graduate School of Agricultural Sciences, Ehime University

• Rana Lokendra

  Faculty of Agriculture and Marine Science, Kochi University

• Matsumoto Ayaka

  Faculty of Agriculture and Marine Science, Kochi University

• Nagano Hironori

  Field Science Center for Northern Biosphere, Hokkaido University

• Oue Hiroki

  The United Graduate School of Agricultural Sciences, Ehime University

• Murai Masayuki

  Emeritus Professor of Kochi University, Faculty of Agriculture and Marine Science, Kochi University

Bibliographic Information

Other Title

• Effects of tall alleles SD1-in and SD1-ja to the dwarfing allele sd1-d originating from 'Dee-geo-woo-gen' on yield and related traits on the genetic background of indica IR36 in rice

Abstract

sd1-d originating from ‘Dee-geo-woo-gen’ has been utilized to develop short-culmed indica varieties adaptable to higher fertilizer-application. Its tall alleles SD1-in and SD1-ja are harbored in indica and japonica subspecies, respectively. The sd1-d of indica IR36 was substituted with SD1-in or SD1-ja by recurrent backcrossing with IR36, and two tall isogenic lines (“5867-36” and “Koshi-36”) were developed. IR36, 5867-36 and Koshi-36 were grown in a paddy field in three years, and yield and related traits were measured, the effects of SD1-in and SD1-ja on yielding ability and related characteristics were examined on the genetic background of IR 36. SD1-in decreased panicle number per m² but increased spikelet number per panicle, ripened-grain percentage and 1000-grain weight, compared with sd1-d, resulting in the increase of yield. The increase of 1000-grain weight by SD1-in, caused by the increases of length, width and thickness of grain, was due to the increases of the length and width of lemma. SD1-ja did not significantly affect yield, mainly because the decrease of panicle number per m² was compensated by the enlarged 1000-grain weight owing to the increase of lemma length. Serious lodging was observed in long-culmed 5867-36, suggesting that sd1-d is indispensable for indica breeding programs.

Journal

• Breeding Science

  Breeding Science 71 (3), 334-343, 2021

  Japanese Society of Breeding

Keywords

• <i>Oryza sativa</i>
• dwarfing gene
• <i>sd1</i>
• yield
• yield component
• spikelet
• grain

Details

• CRID: 1390851817141160448
• NII Article ID: 130008069068
• NII Book ID: AA11317194
• DOI: 10.1270/jsbbs.21001
• ISSN: 13473735
• ISSN: 13447610
• NDL BIB ID: 031618206
• Web Site: http://id.ndl.go.jp/bib/031618206
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I031618206
• Web Site: https://www.jstage.jst.go.jp/article/jsbbs/71/3/71_21001/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed