Development and evaluation of chromosome segment substitution lines (CSSLs) carrying chromosome segments derived from <i>Oryza rufipogon</i> in the genetic background of <i>Oryza sativa</i> L.

• DOI: 10.1270/jsbbs.63.468
• Publication Date: 2014-03-26T23:13:06Z
• Authors: Tomoyuki Furuta; Kanako Uehara; Rosalyn B. Angele...; Junghyun Shim; Motoyuki Ashikari; Tomonori Takashi
• Keywords: Oryza rufipogon; Panicle; Introgression

The wild relatives of rice (Oryza sativa L.) are useful sources alleles that have evolved to adapt in diverse environments around the world. Oryza rufipogon, known progenitor cultivated rice, harbors genes been lost varieties through domestication or evolution. This makes O. rufipogon an ideal source value-added traits can be utilized improve existing cultivars. To explore potential as a genetic resource for improving sativa, 33 chromosome segment substitution lines (CSSLs) (W0106) background elite japonica cultivar Koshihikari were developed and evaluated several agronomic traits. Over 90% entire genome was introgressed from donor parent into CSSLs. A total 99 putative QTLs detected, which 15 identified major effective significantly large effects on examined. Among QTLs, QTL 10 showed remarkable positive effect number grains per panicle. Comparison this study previous studies indicated wide diversity between accessions.