Quantitative trait loci mapping for flag leaf traits in rice using a chromosome segment substitution line population

2014 ◽  
Vol 133 (2) ◽  
pp. 203-209 ◽  
Author(s):  
Jianmin Bian ◽  
Haohua He ◽  
Huan Shi ◽  
Guoqiang Zhu ◽  
Cuijuan Li ◽  
...  
2021 ◽  
Vol 12 ◽  
Author(s):  
Quanwei Lu ◽  
Xianghui Xiao ◽  
Juwu Gong ◽  
Pengtao Li ◽  
Yan Zhao ◽  
...  

Fiber length is an important determinant of fiber quality, and it is a quantitative multi-genic trait. Identifying genes associated with fiber length is of great importance for efforts to improve fiber quality in the context of cotton breeding. Integrating transcriptomic information and details regarding candidate gene regions can aid in candidate gene identification. In the present study, the CCRI45 line and a chromosome segment substitution line (CSSL) with a significantly higher fiber length (MBI7747) were utilized to establish F2 and F2:3 populations. Using a high-density genetic map published previously, six quantitative trait loci (QTLs) associated with fiber length and two QTLs associated with fiber strength were identified on four chromosomes. Within these QTLs, qFL-A07-1, qFL-A12-2, qFL-A12-5, and qFL-D02-1 were identified in two or three environments and confirmed by a meta-analysis. By integrating transcriptomic data from the two parental lines and through qPCR analyses, four genes associated with these QTLs including Cellulose synthase-like protein D3 (CSLD3, GH_A12G2259 for qFL-A12-2), expansin-A1 (EXPA1, GH_A12G1972 for qFL-A12-5), plasmodesmata callose-binding protein 3 (PDCB3, GH_A12G2014 for qFL-A12-5), and Polygalacturonase (At1g48100, GH_D02G0616 for qFL-D02-1) were identified as promising candidate genes associated with fiber length. Overall, these results offer a robust foundation for further studies regarding the molecular basis for fiber length and for efforts to improve cotton fiber quality.


Rice Science ◽  
2019 ◽  
Vol 26 (5) ◽  
pp. 261-264 ◽  
Author(s):  
L.I. Zihe ◽  
Aamir Riaz ◽  
Zhang Yingxin ◽  
Galal Bakr Anis ◽  
Zhu Aike ◽  
...  

2009 ◽  
Vol 51 (4) ◽  
pp. 360-366 ◽  
Author(s):  
Dali Zeng ◽  
Jiang Hu ◽  
Guojun Dong ◽  
Jian Liu ◽  
Longjun Zeng ◽  
...  

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