Identification of rice chromosome segment substitution line Z322-1-10 and mapping QTLs for agronomic traits from the F3 population

F.M. Zhao; Y. Tan; L.Y. Zheng; K. Zhou; G.H. He; Y.H. Ling; L.H. Zhang; S.Z. Xu

doi:10.1556/0806.44.2016.022

Cereal Research Communications

Volume/Issue:: Volume 44: Issue 3

Identification of rice chromosome segment substitution line Z322-1-10 and mapping QTLs for agronomic traits from the F₃ population

Authors:

F.M. Zhao

F.M. Zhao Southwest University, Chongqing 400716, China
University of California, Riverside, CA, 92521, USA

Search for other papers by F.M. Zhao in
Current site
Google Scholar
PubMed

Y. Tan

Y. Tan Southwest University, Chongqing 400716, China

Search for other papers by Y. Tan in
Current site
Google Scholar
PubMed

L.Y. Zheng

L.Y. Zheng Southwest University, Chongqing 400716, China

Search for other papers by L.Y. Zheng in
Current site
Google Scholar
PubMed

K. Zhou

K. Zhou Southwest University, Chongqing 400716, China

Search for other papers by K. Zhou in
Current site
Google Scholar
PubMed

G.H. He

G.H. He Southwest University, Chongqing 400716, China

Search for other papers by G.H. He in
Current site
Google Scholar
PubMed

Y.H. Ling

Y.H. Ling Southwest University, Chongqing 400716, China

Search for other papers by Y.H. Ling in
Current site
Google Scholar
PubMed

L.H. Zhang

L.H. Zhang University of California, Riverside, CA, 92521, USA

Search for other papers by L.H. Zhang in
Current site
Google Scholar
PubMed

, and

S.Z. Xu

S.Z. Xu University of California, Riverside, CA, 92521, USA

Search for other papers by S.Z. Xu in
Current site
Google Scholar
PubMed

shizhong.xu@ucr.edu

View More View Less

Pages:: 370–380

Online Publication Date:: Sep 2016

Publication Date:: 01 Sep 2016

Article Category:: Research Article

DOI:: https://doi.org/10.1556/0806.44.2016.022

Keywords:: chromosome segment substitution line; QTL mapping; rice; yield; yield component trait

Restricted access

Chromosome segment substitution lines (CSSLs) are powerful tools to combine naturally occurring genetic variants with favorable alleles in the same genetic backgrounds of elite cultivars. An elite CSSL Z322-1-10 was identified from advanced backcrosses between a japonica cultivar Nipponbare and an elite indica restorer Xihui 18 by SSR marker-assisted selection (MAS). The Z322-1-10 line carries five substitution segments distributed on chromosomes 1, 2, 5, 6 and 10 with an average length of 4.80 Mb. Spikilets per panicle, 1000-grain weight, grain length in the Z322-1-10 line are significantly higher than those in Nipponbare. Quantitative trait loci (QTLs) were identified and mapped for nine agronomic traits in an F3 population derived from the cross between Nipponbare and Z322-1-10 using the restricted maximum likelihood (REML) method in the HPMIXED procedure of SAS. We detected 13 QTLs whose effect ranging from 2.45% to 44.17% in terms of phenotypic variance explained. Of the 13 loci detected, three are major QTL (qGL1, qGW5-1 and qRLW5-1) and they explain 34.68%, 44.17% and 33.05% of the phenotypic variance. The qGL1 locus controls grain length with a typical Mendelian dominance inheritance of 3:1 ratio for long grain to short grain. The already cloned QTL qGW5-1 is linked with a minor QTL for grain width qGW5-2 (13.01%) in the same substitution segment. Similarly, the previously reported qRLW5-1 is also linked with a minor QTL qRLW5-2. Not only the study is important for fine mapping and cloning of the gene qGL1, but also has a great potential for molecular breeding.

Supplementary Materials

Save
Cite
Email this content

Share Link

Copy this link, or click below to email it to a friend
Email this content
or copy the link directly:

https://akjournals.com/abstract/journals/0806/44/3/article-p370.xml
The link was not copied. Your current browser may not support copying via this button.

Link copied successfully

Collapse
Expand

Cereal Research Communications A Quarterly of the Cereal Research Non-Profit Ltd. Company

Print ISSN:: 0133-3720

Online ISSN:: 1788-9170

To see the editorial board, please visit the website of Springer Nature.

Manuscript Submission: HERE

For subscription options, please visit the website of Springer Nature.

Cereal Research Communications
Language	English
Size	A4
Year of Foundation	1973
Volumes per Year	1
Issues per Year	4
Founder	Akadémiai Kiadó
Founder's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245
Publisher	Akadémiai Kiadó Springer Nature Switzerland AG
Publisher's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible Publisher	Chief Executive Officer, Akadémiai Kiadó
ISSN	0133-3720 (Print)
ISSN	1788-9170 (Online)