ArticleRice (New York, N.Y.)2016
Rice panicle plasticity in Near Isogenic Lines carrying a QTL for larger panicle is genotype and environment dependent.
Article in Rice (New York, N.Y.), 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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Who cites it
15 citing papers in PubMed.
- Fine mapping and candidate genes analysis for flesh thickness major locusHorticulture research · 2026Article
- Genome-wide association analysis to identify QTLs and candidate genes associated with grain yield and its related traits under low light conditions in rice (Oryza sativa L.).The plant genome · 2026Article
- Optimized nitrogen management improves grain yield of rice by regulating panicle architecture in South China.Heliyon · 2024Article
- Genome-wide association analysis identifies natural allelic variants associated with panicle architecture variation in African rice, Oryza glaberrima Steud.G3 (Bethesda, Md.) · 2023Article
- Identification of Newer Stable Genetic Sources for High Grain Number per Panicle and Understanding the Gene Action for Important Panicle Traits in Rice.Plants (Basel, Switzerland) · 2023Article
- The genetic basis for panicle trait variation in switchgrass (Panicum virgatum).TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2022Article
- OsTPR boosts the superior grains through increase in upper secondary rachis branches without incurring a grain quality penalty.Plant biotechnology journal · 2021Article
- Utilization of urea and chicken litter biochar to improve rice production.Scientific reports · 2021Article
- Genetic variability of panicle architecture in indigenous rice landraces of Koraput region of Eastern Ghats of India for crop improvement.Physiology and molecular biology of plants : an international journal of functional plant biology · 2020Article
- Localization of quantitative trait loci for cucumber fruit shape by a population of chromosome segment substitution lines.Scientific reports · 2020Article
- A Novel Variation in theGenetics · 2020Article
- Low-light and its effects on crop yield: Genetic and genomic implications.Journal of biosciences · 2020Article
- PI-Plat: a high-resolution image-based 3D reconstruction method to estimate growth dynamics of rice inflorescence traits.Plant methods · 2019Article
- A genome-wide association study using a Vietnamese landrace panel of rice (Oryza sativa) reveals new QTLs controlling panicle morphological traits.BMC plant biology · 2018Article
- Grain density and its impact on grain filling characteristic of rice: mechanistic testing of the concept in genetically related cultivars.Scientific reports · 2018Article
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6 authors.
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Abstract
backgroundPanicle architectural traits in rice (branching, rachis length, spikelet number) are established between panicle initiation and heading stages. They vary among genotypes and are prone to Genotype x Environment interactions. Together with panicle number, panicle architecture determines sink-based yield potential. Numerous studies analyzed genetic and environmental variation of plant morphology, but the plasticity of panicle structure is less well understood. This study addressed the response of rice panicle size and structure to limited light availability at plant level for near-isogenic lines (NILs) with IR64 or IRRI146 backgrounds, carrying the QTL qTSN4 (syn. SPIKE) for large panicles. Full light and shading in the greenhouse and two population densities in the field were implemented. The image analysis tool P-TRAP was used to analyze the architecture of detached panicles.
resultsThe qTSN4 increased total branch length, branching frequency and spikelet number per panicle in IRRI146 background in the field and greenhouse, and in IR64 background in the greenhouse, but not for IR64 in the field. In the field, however, qTSN4 reduced panicle number, neutralizing any potential yield gains from panicle size. Shading during panicle development reduced spikelet and branch number but qTSN4 mitigated partly this effect. Spikelet number over total branch length (spikelet density) was a stable allometry across genotypes and treatments with variation in spikelet number mainly due to the frequency of secondary branches. Spikelet number on the main tiller was correlated with stem growth rate during panicle development, indicating that effects on panicle size seemed related to resources available per tiller.
conclusionsThe qTSN4 effects on panicle spikelet number appear as indirect and induced by upstream effects on pre-floral assimilate resources at tiller level, as they were (1) prone to G x E interactions, (2) non-specific with respect to panicle architectural traits, and (3) associated with pre-floral stem growth rate.
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