Agritrop
Home

The qTSN4 effect on flag leaf size, photosynthesis and panicle size, benefits to plant grain production in rice, depending on light availability

Fabre Denis, Adriani Dewi Erika, Dingkuhn Michaël, Ishimaru Tsutomu, Punzalan Bermenito, Lafarge Tanguy, Clément-Vidal Anne, Luquet Delphine. 2016. The qTSN4 effect on flag leaf size, photosynthesis and panicle size, benefits to plant grain production in rice, depending on light availability. Frontiers in Plant Science, 7 (623), 12 p.

Journal article ; Article de recherche ; Article de revue à facteur d'impact Revue en libre accès total
[img]
Preview
Post-print version - Anglais
Use under authorization by the author or CIRAD.
185854_Fabre_ProvisionalPDF.pdf

Télécharger (1MB) | Preview
[img]
Preview
Published version - Anglais
Use under authorization by the author or CIRAD.
fpls-FABRE.pdf

Télécharger (1MB) | Preview

Quartile : Q1, Sujet : PLANT SCIENCES

Abstract : Increasing rice yield potential is essential to secure world food supply. The quantitative trait locus qTSN4 was reported to achieve yield increases by enhancing both source and sink capacity. Three greenhouse experiments and one field experiment in the Philippines were conducted to study near-isogenic lines (NIL) in two genetic backgrounds, subjected to treatments with restricted light resources through shading (greenhouse) or population density (field and greenhouse). A consistent promotion of flag leaf width, leaf area and panicle size in terms of spikelet number was observed in the presence of qTSN4, regardless of environment. However, grain production per plant was enhanced only in one greenhouse experiment. An in-depth study demonstrated that increased flag leaf size in the presence of qTSN4 was associated with increased photosynthetic rates, along with lower SLA and greater N content per leaf weight and per area. This was emphasized under low light situation as the qTSN4-NILs did not express shade acclimation traits in contrast with the recipient varieties. The authors conclude that qTSN4 is a promising subject for further physiological studies, particularly under limited radiation. However, the QTL alone may not be a reliable source of increased yield potential because its effects at the plant and population scale are prone to genotype X environment interactions and the increased panicle size is compensated by the adaptive plasticity of other morphological traits. (Résumé d'auteur)

Mots-clés Agrovoc : Oryza sativa, Locus des caractères quantitatifs, Rendement des cultures, Adaptation, Ombrage, Panicule, Surface foliaire, Dimension, Photosynthèse, Physiologie végétale, Expérimentation en pot, Expérimentation au champ

Mots-clés géographiques Agrovoc : France

Mots-clés complémentaires : QTL

Mots-clés libres : Oryza sativa, Shade acclimation, Quantitative trait locus (QTL), Yield potential, Panicle size, Specific leaf area (SLA)

Classification Agris : F30 - Plant genetics and breeding
F50 - Plant structure
F62 - Plant physiology - Growth and development
F01 - Crop husbandry

Champ stratégique Cirad : Axe 1 (2014-2018) - Agriculture écologiquement intensive

Auteurs et affiliations

  • Fabre Denis, CIRAD-BIOS-UMR AGAP (FRA) ORCID: 0000-0002-6222-2587
  • Adriani Dewi Erika, CIRAD-BIOS-UMR AGAP (FRA)
  • Dingkuhn Michaël, CIRAD-BIOS-UMR AGAP (PHL)
  • Ishimaru Tsutomu, IRRI (PHL)
  • Punzalan Bermenito, IRRI (PHL)
  • Lafarge Tanguy, CIRAD-BIOS-UMR AGAP (FRA)
  • Clément-Vidal Anne, CIRAD-BIOS-UMR AGAP (FRA)
  • Luquet Delphine, CIRAD-BIOS-UMR AGAP (FRA) ORCID: 0000-0002-2543-7140

Source : Cirad-Agritrop (https://agritrop.cirad.fr/580415/)

View Item (staff only) View Item (staff only)

[ Page générée et mise en cache le 2020-09-29 ]