論文

査読有り
2016年2月

Characterization of QTL for unique agronomic traits of new-plant-type rice varieties using introgression lines of IR64

CROP JOURNAL
  • Analiza G. Tagle
  • ,
  • Daisuke Fujita
  • ,
  • Leodegario A. Ebron
  • ,
  • Mary Jeanie Telebanco-Yanoria
  • ,
  • Kazuhiro Sasaki
  • ,
  • Tsutomu Ishimaru
  • ,
  • Yoshimichi Fukuta
  • ,
  • Nobuya Kobayashi

4
1
開始ページ
12
終了ページ
20
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1016/j.cj.2015.10.001
出版者・発行元
ELSEVIER SCIENCE BV

To enhance the yield potential of an elite indica rice cultivar, an introgression (BC3-derived) line of IR64, YTH288, was developed using a new-plant-type cultivar, IR66215-44-2-3, as a donor parent. YTH288 has agronomically valuable characteristics such as large panicles, few unproductive tillers, and large leaves inherited from NPT. To identify the genetic basis of these traits, we used 167 F-2 plants derived from a cross between IR64 and YTH288 to conduct QTL analysis for five agronomic traits: days to heading (DTH), culm length (CL), flag leaf length (FLL), flag leaf width (FLW), and filled spikelet number per panicle (FSN). Six putative QTL were detected: four on chromosome 4 (for CL, FLL, FLW, and FSN) and two on chromosome 2 (for DTH and FLL). All QTL with the IR66215-44-2-3 allele, except that for FLL on chromosome 2, had positive effects on each trait. To confirm the effects of these putative QTL, we developed NILs with the IR64 genetic background by marker-assisted selection. We observed significant differences in several agronomic traits between IR64 and NILs that carried these QTL on chromosomes 2 and 4. Additionally, four IR64-NILs carrying chromosomal segments derived from different NPT varieties on the long arm of chromosome 4 exhibited similar pleiotropic effects for unique agronomic traits. These NILs can be used as research materials for studying each trait and as breeding materials for yield improvement of indica rice cultivars. (C) 2015 Crop Science Society of China and Institute of Crop Science, CAAS. Production and hosting by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

Web of Science ® 被引用回数 : 6

リンク情報
DOI
https://doi.org/10.1016/j.cj.2015.10.001
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000371997800002&DestApp=WOS_CPL

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