ArticleJournal of experimental botany2017
Fine mapping of a quantitative trait locus for spikelet number per panicle in a new plant type rice and evaluation of a near-isogenic line for grain productivity.
Article in Journal of experimental botany, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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8 citing papers in PubMed, 27 citations in OpenAlex.
- An extra-large panicle gene ELP1 from wild rice Oryza officinalis increases grain number and grain yield.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2025Article
- Genomic regions associated with flag leaf and panicle architecture in rice (Oryza sativa L.).BMC genomics · 2024Article
- Genetic variation in ZmKW1 contributes to kernel weight and size in dent corn and popcorn.Plant biotechnology journal · 2024Article
- Identification of Genetic Factors Controlling the Formation of Multiple Flowers Per Node in Pepper (Frontiers in plant science · 2022Article
- Detection of QTL for panicle architecture in FJournal of genetics · 2019Article
- The different influences of drought stress at the flowering stage on rice physiological traits, grain yield, and quality.Scientific reports · 2019Article
- Next generation long-culm rice with superior lodging resistance and high grain yield, Monster Rice 1.PloS one · 2019Article
- A novel Rice QTL qOPW11 Associated with Panicle Weight Affects Panicle and Plant Architecture.Rice (New York, N.Y.) · 2018Article
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10 authors at 4 institutions in 2 countries.
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No grant is acknowledged in the PubMed record.
Abstract
Total spikelet number per panicle (TSN) is one of the determinants of grain productivity in rice (Oryza sativa L.). In this study, we attempted to detect quantitative trait loci (QTLs) for TSN in the introgression lines with high TSN, derived from the cross of Indica Group variety IR 64 with new plant type lines. Two QTLs were detected on the long arm of chromosome 12: qTSN12.1 in the BC4F2 population of YTH63/IR 64 and qTSN12.2 in the BC4F3 population of YTH83/IR 64. TSN of the main tiller was significantly higher in near-isogenic lines (NILs) for qTSN12.1 (IR 64-NIL1; 188.6) and for qTSN12.2 (IR 64-NIL12; 199.4) than in IR 64 (141.2), owing to a significant increase in both primary and secondary branch numbers. These results suggest the critical function of these QTLs in the promotion of rachis branching at the panicle formation stage. Fine mapping of qTSN12.2 revealed six candidate genes in a 92-kb region of the Nipponbare reference genome sequence between flanking markers RM28746 and RM28753. Detailed phenotyping of agronomic traits of IR 64-NIL12 carrying qTSN12.2 showed drastic changes in plant architecture: this line had lower panicle number, longer culm, and longer and wider leaves compared with IR 64. Percentage of fertility and 1000-grain weight tended to be greater, and grain yield per square meter was also greater in IR 64-NIL12 than in IR 64. The newly identified QTLs will be useful for genetic improvement of the yield potential of Indica Group varieties. The markers tightly linked to qTSN12.2 are available for marker-assisted breeding.
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