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Thoughts for a new seed quality strategy, incorporating seed vigour and the microbiome

Groot, Steven P.C.; Klaedtke, Stéphanie; REY, Frederic and Kodde, Jan (2021) Thoughts for a new seed quality strategy, incorporating seed vigour and the microbiome. Wageningen University & Research , Plant Science.

[thumbnail of A new seed quality trategy at ISSS2021 conference.mp4] Video (MP4) - Published Version - English
299MB


Summary

Official seed tests determine seed quality, using standardised lab conditions with an early and final
count of germinated seeds and counting the frequency of normal seedlings, while seed health is
considered as the absence of seed borne pathogens. In the field however, the seed or seedling will
encounter biotic and abiotic stresses, therefore emergence in the field is often less than germination in
the lab. In the field seed vigour is important. To favour the development of more resilient cropping
systems, we suggest to place more emphasis on seed vigour , because early emergence in the field has a
strong effect on crop establishment and frequently also on costs for corrective measures and total
yield,. The ISTA handbook lists vigour tests, including the so-called controlled deterioration (CD) test, but
only for a very limited number of crops.
In the frame of the European LIVESEED project we develop a new organic seed health strategy, which
will also has advantages for other sustainable farming systems. The basic idea is that both seed vigour
and the seed microbiome should be taken into account as elements that can aid the seed and seedling
tolerance towards biotic and abiotic stresses. We showed that a CD treatment, inducing slight reduction
in carrot seed vigour, increased the sensitivity to the damping-off causing pathogen Alternaria radicina.
Seeds are not sterile organisms, they contain a large amount of micro-organisms, collectively called the
seed microbiome, that enable transfer of the microbiota from the mother plant to the next generation.
Recent research has shown that the seed microbiome contains also organisms that can aid the seedling
in its tolerance, sometimes even resistance, towards pathogens and abiotic stress. An overview of this
will be presented, including how this can aid in a strategy towards more resilient cropping systems.


EPrint Type:Video
Keywords:seed health seed microbiome seed quality seed vigour
Agrovoc keywords:
Language
Value
URI
English
seed
http://aims.fao.org/aos/agrovoc/c_6927
English
vigour
http://aims.fao.org/aos/agrovoc/c_37512
English
resilience
http://aims.fao.org/aos/agrovoc/c_1374480530924
English
microbiome
UNSPECIFIED
Subjects: Crop husbandry > Breeding, genetics and propagation
Crop husbandry > Crop health, quality, protection
Research affiliation: France > ITAB - Institut Technique en Agriculture Biologique
Netherlands > Wageningen University & Research (WUR)
Horizon Europe or H2020 Grant Agreement Number:727230
Deposited By: Groot, Dr. Steven P.C.
ID Code:41878
Deposited On:24 Aug 2021 07:59
Last Modified:24 Aug 2021 07:59
Document Language:English
Status:Published

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