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Creating dynamic and diverse populations. Mixtures of landraces or old varieties (Liveseed Practice Abstract)

{Tool} Creating dynamic and diverse populations. Mixtures of landraces or old varieties (Liveseed Practice Abstract). Creator(s): Goldringer, I.; toncea, I.; Lo Fiego, A.; Navarro Chaves, A.; Fuss, A. and Chable, Véronique. Issuing Organisation(s): INRAE - National Research Institute for Agriculture, Food and Environment, NARDI - National Agricultural Research and Development Institute. Liveseed Practice Abstract, no. 4. (2020)

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Document available online at: https://www.liveseed.eu/wp-content/uploads/2020/03/PA4_Creating-dynamic-and-diverse-populations.pdf


Practical Recommendations: Start a collection of diverse cultivars that fit to organic principles (avoid modern varieties obtained by biotechnology). Test and identify cultivars adapted locally; landraces are generally more robust with good nutritional and sensorial qualities; modern varieties could be productive but more fragile. Within a mixture, plants will have unpredictable susceptibility to diseases. Create the dynamic population by several cycles of multiplication. Selection will be done by the environment and by the farmer applying mass selection (positive or negative) in his own farm conditions.

EPrint Type:Practice tool
What problem does the tool address?:Lack of adapted varieties and availability of organic seed as well as decreasing agrobiodiversity, motivated farmers to develop their own dynamic populations with an intra-varietal diversity and higher adaptability. Landraces or old varieties might have lost their intrinsic diversity and have not been selected in the right conditions. Mixing a set of selected ones can offer good opportunities to create new diverse populations and to associate cultivar with complementary characters.
What solution does the tool offer?:The mixture of several populations (landraces, old populations from Genebanks or varieties bred according to organic principles) will evolve together as a dynamic population year after year under certain farm conditions. Collective organizations offer spaces for technical cooperation and seed exchanges among farmers, while re-creating the neccessary specific knowledge. Researchers, processors, consumers can join the process to better reach objectives of the whole food chains.
Type of Practice Tool:Practice abstracts
Keywords:seeds, varieties
Agrovoc keywords:
Subjects: Crop husbandry > Breeding, genetics and propagation
Research affiliation: European Union > Horizon 2020 > Liveseed
European Union > Horizon 2020 > Liveseed > Liveseed tools
France > INRA - Institut National de la Recherche Agronomique
Romania > Other institutions
Horizon Europe or H2020 Grant Agreement Number:727230
Related Links:https://organic-farmknowledge.org/tool/37869, https://www.inrae.fr, https://orgprints.org/37869
Project ID:ofk
Deposited By: Ortolani, Dr. Livia
ID Code:37869
Deposited On:12 Apr 2020 18:34
Last Modified:26 Jul 2022 19:19
Document Language:English

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