1st European Brachypodium Workshop 2011

Activity: Participating in or organising an academic or articstic eventConferencesResearch

Benjamin Delory - Coauthor

Describing and modelling root and shoot growth and development in Brachypodium distachyon (L.) Beauv - Poster

Due to its small size, its short developmental cycle and its close phylogenetic relationship with the Triticeae tribe, Brachypodium distachyon (L.) Beauv. has been proposed as a model species for temperate cereals. In this context, this work aims to describe and model root and shoot growth and development of B. distachyon (Bd21-1) grown under controlled environmental conditions [22°C, 65% RH, 20h light, 95 µmol.m-2.s-1 (PAR, LED lighting)]. For this purpose, vernalized caryopses were sown in a substrate consisting of vermiculite and compost (80/20, v/v). Growth and development of the above and belowground parts were monitored for 70 days. Dry and fresh masses of plant organs were measured every seven days from sowing. Biomasses of adventitious and seminal roots were measured separately. The number of spikelets on the main stem and on tillers was also counted on plants aged of 70 days.
The modelling of root and shoot growth was achieved by calibrating sigmoidal growth models to the mean biomass values measured at each day of analysis. For each plant organ, the growth model selected was the one with the lowest residual variance. Finally, developmental stages identified for B. distachyon were compared with those defined for cereal crops by Zadoks et al. (1974).
Maximum rates of fresh and dry shoot biomass production were 29,5 and 14,2 mg.day-1 respectively. Based on modelling, these values seem to be reached 49 and 72 days after sowing. Results also show that the fresh mass of adventitious roots at day 42 is significantly higher than that of seminal roots. Maximum rates of fresh and dry root biomass production were 6,9 and 0,8 mg.day-1 respectively, and were reached after 37 and 43 days.
19.10.201121.10.2011
1st European Brachypodium Workshop 2011

Event

1st European Brachypodium Workshop 2011

19.10.1121.10.11

Versailles, France

Event: Workshop

Recently viewed

Publications

  1. Is a severe clinical profile an effect modifier in a web-based depression treatment for adults with type 1 or type 2 diabetes ?
  2. Assessment of physical strain in younger and older subjects using heart rate and scalings of perceived exertion
  3. Remote control of a soft walking robot
  4. Modellieren als Kreislauf?
  5. Social and dimensional comparison effects on math and reading self-concepts of elementary school children
  6. Independent Music and Digital Technology in the Philippines
  7. Gender differences on general knowledge tests
  8. Effort and Success as Predictors of Passion
  9. Environmental and structural health monitoring by optoelectronic scanner
  10. The impact of mindfulness on well-being and performance in the workplace
  11. Effectiveness of E-Self-help Interventions for Curbing Adult Problem Drinking
  12. Battery as a mediating technology of organization
  13. Analysis of piezoelectric harvester with multi-array configuration for ultra-low power sensor nodes
  14. Die McDonaldisierung deutscher Museen
  15. Aesthetics of the Earth. Reframing Relational Aesthetics Considering Critical Ecologies
  16. Fehler und Versuch. Parteispenden und ihre Regulierung
  17. Theorizing path dependence
  18. Eco-Innovation in SMEs
  19. Risk Aversion and Worker Sorting into Public Sector Employment
  20. A highly endangered species on the edge
  21. Von der natürlichen Auslese zur Bildungsselektion 1780 - 1980
  22. Kirchengeschichte
  23. Schätzen – Aber wie?
  24. Customer Value und Public Value
  25. Umsteuern erforderlich
  26. Conservation value of moist evergreen Afromontane forest sites with different management and history in southwestern Ethiopia
  27. Differenzphilosophie und Affekt
  28. Identity
  29. Unobtrusive Vital Sign Acquisition in the Domain of AAL
  30. Biodiversity across trophic levels drives multifunctionality in highly diverse forests
  31. An overview of biofuel policies across the world