Mapping of dynamic quantitative trait loci for plant height in a RIL population of foxtail millet (Setaria italica L.)

• DOI: 10.3389/fpls.2024.1418328
• Publication Date: 2024-07-24T05:07:54Z
• Authors: Kangni Han; Zhilan Wang; Lin Shen; Xiaofen Du; Shichao Lian; Yuxin Li; Yanfang Li; Chuchu Tang; Huixia Li; Linyi Zhang; Jun Wang
• Keywords: Candidate gene; Setaria; Family-based QTL mapping; Foxtail; Trait

Plant height (PH) is a crucial trait for strengthening lodging resistance and boosting yield in foxtail millet. To identify quantitative loci (QTL) candidate genes associated with PH, we first developed genetic map using recombinant inbred line (RIL) population derived from cross between Aininghuang Jingu 21. Then, PH phenotyping data four variations of best linear unbiased prediction (BLUP) were collected nine environments three development stages. Next, QTL mapping was conducted both unconditional conditional methods. Subsequently, predicted via transcriptome analysis parental samples at developmental The results revealed that the map, based on re-sequencing, consisted 4,360 bin markers spanning 1,016.06 cM an average distance 0.23 cM. A total 19 QTL, accounting 5.23%-35.36% phenotypic variation explained (PVE), which included 7 major 4 stable identified. Meanwhile, 13 explaining 5.88%-40.35% PVE, including 5 3 discovered. Furthermore, consistent Finally, eight through RNA-seq weighted gene co-expression network (WGCNA). Those findings provide foundation understanding mechanisms underlying facilitate molecular marker-assisted breeding ideal plant types