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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 the 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
H2020 or FP7 Grant Agreement Number:727230
Related Links:https://organic-farmknowledge.org/tool/37869, https://www.inrae.fr, https://orgprints.org/37869
Project ID:oknet
Deposited By: Ortolani, Dr. Livia
ID Code:37869
Deposited On:12 Apr 2020 18:34
Last Modified:13 May 2020 12:29
Document Language:English

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