Rice panicle plasticity in Near Isogenic Lines carrying a QTL for larger panicle is genotype and environment dependent
Panicle 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 yie...
| Autores principales: | , , , , , |
|---|---|
| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Springer
2016
|
| Acceso en línea: | https://hdl.handle.net/10568/165249 |
| _version_ | 1855515963817984000 |
|---|---|
| author | Adriani, Dewi Erika Dingkuhn, Michael Dardou, Audrey Adam, Hélène Luquet, Delphine Lafarge, Tanguy |
| author_browse | Adam, Hélène Adriani, Dewi Erika Dardou, Audrey Dingkuhn, Michael Lafarge, Tanguy Luquet, Delphine |
| author_facet | Adriani, Dewi Erika Dingkuhn, Michael Dardou, Audrey Adam, Hélène Luquet, Delphine Lafarge, Tanguy |
| author_sort | Adriani, Dewi Erika |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Panicle 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. The 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. The 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 |
| format | Journal Article |
| id | CGSpace165249 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| publisher | Springer |
| publisherStr | Springer |
| record_format | dspace |
| spelling | CGSpace1652492024-12-19T14:11:55Z Rice panicle plasticity in Near Isogenic Lines carrying a QTL for larger panicle is genotype and environment dependent Adriani, Dewi Erika Dingkuhn, Michael Dardou, Audrey Adam, Hélène Luquet, Delphine Lafarge, Tanguy Panicle 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. The 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. The 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 2016-12 2024-12-19T12:54:51Z 2024-12-19T12:54:51Z Journal Article https://hdl.handle.net/10568/165249 en Open Access Springer Adriani, Dewi Erika; Dingkuhn, Michael; Dardou, Audrey; Adam, Hélène; Luquet, Delphine and Lafarge, Tanguy. 2016. Rice panicle plasticity in Near Isogenic Lines carrying a QTL for larger panicle is genotype and environment dependent. Rice, Volume 9, no. 1 |
| spellingShingle | Adriani, Dewi Erika Dingkuhn, Michael Dardou, Audrey Adam, Hélène Luquet, Delphine Lafarge, Tanguy Rice panicle plasticity in Near Isogenic Lines carrying a QTL for larger panicle is genotype and environment dependent |
| title | Rice panicle plasticity in Near Isogenic Lines carrying a QTL for larger panicle is genotype and environment dependent |
| title_full | Rice panicle plasticity in Near Isogenic Lines carrying a QTL for larger panicle is genotype and environment dependent |
| title_fullStr | Rice panicle plasticity in Near Isogenic Lines carrying a QTL for larger panicle is genotype and environment dependent |
| title_full_unstemmed | Rice panicle plasticity in Near Isogenic Lines carrying a QTL for larger panicle is genotype and environment dependent |
| title_short | Rice panicle plasticity in Near Isogenic Lines carrying a QTL for larger panicle is genotype and environment dependent |
| title_sort | rice panicle plasticity in near isogenic lines carrying a qtl for larger panicle is genotype and environment dependent |
| url | https://hdl.handle.net/10568/165249 |
| work_keys_str_mv | AT adrianidewierika ricepanicleplasticityinnearisogeniclinescarryingaqtlforlargerpanicleisgenotypeandenvironmentdependent AT dingkuhnmichael ricepanicleplasticityinnearisogeniclinescarryingaqtlforlargerpanicleisgenotypeandenvironmentdependent AT dardouaudrey ricepanicleplasticityinnearisogeniclinescarryingaqtlforlargerpanicleisgenotypeandenvironmentdependent AT adamhelene ricepanicleplasticityinnearisogeniclinescarryingaqtlforlargerpanicleisgenotypeandenvironmentdependent AT luquetdelphine ricepanicleplasticityinnearisogeniclinescarryingaqtlforlargerpanicleisgenotypeandenvironmentdependent AT lafargetanguy ricepanicleplasticityinnearisogeniclinescarryingaqtlforlargerpanicleisgenotypeandenvironmentdependent |