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Article

Release of Medicago truncatula Gaertn. and Pisum sativum subsp. elatius (M. Bieb.) Asch. et Graebn. Seed Dormancy Tested in Soil Conditions

1
Instituto Nacional de Tecnología Agropecuaria, Hilario Ascasubi 8142, Argentina
2
Department of Geoinformatics, Palacký University in Olomouc, 17. listopadu 50, 771 46 Olomouc, Czech Republic
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Department of Biology and Botanical Garden, University of Crete, 71409 Heraklion, Greece
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Institute of Ecology and Botany, MTA Centre for Ecological Research, H-2163 Vácrátót, Hungary
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MTA-DE Lendület Functional and Restoration Ecology Research Group, H-4028 Debrecen, Hungary
6
Department of Botany, Palacký University in Olomouc, Šlechtitelů 27, 783 71 Olomouc, Czech Republic
*
Author to whom correspondence should be addressed.
Agronomy 2020, 10(7), 1026; https://doi.org/10.3390/agronomy10071026
Received: 1 June 2020 / Revised: 29 June 2020 / Accepted: 12 July 2020 / Published: 16 July 2020
Medicago truncatula (barrel medic) and Pisum sativum subsp. elatius (wild pea) accessions originating from variable environmental conditions in the Mediterranean basin were used to study physical seed dormancy (PY) release. The effect of soil burial on PY release was tested on 112 accessions of medic and 46 accessions of pea over the period of 3 months in situ at three common gardens (Hungary, Spain and Greece) from 2017 through 2019. PY release after soil exhumation followed by experimental laboratory germination of remaining dormant seeds (wet, 25 °C, 21 days) were related to the environmental conditions of the common garden and macroclimatic variables of the site of origin of the accessions. Higher PY release was observed in buried seeds under humid rather than under dry and hot environments. Exposure of remaining dormant seeds to experimental laboratory conditions increased total PY release up to 70% and 80% in barrel medic and wild pea, respectively. Wild pea showed higher phenotypic plasticity on PY release than barrel medic, which had higher bet-hedging within-season. Wild pea showed lower bet-hedging among-season (PY < 10%) in relation to precipitation than barrel medic, which was more conservative (PY ≈ 20%). Observed variability suggests that these species have the capability to cope with ongoing climate change. View Full-Text
Keywords: bet-hedging; germination; Medicago; pea; plasticity; seed dormancy; soil seed bank bet-hedging; germination; Medicago; pea; plasticity; seed dormancy; soil seed bank
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MDPI and ACS Style

Renzi, J.P.; Brus, J.; Pirintsos, S.; Erdős, L.; Duchoslav, M.; Smýkal, P. Release of Medicago truncatula Gaertn. and Pisum sativum subsp. elatius (M. Bieb.) Asch. et Graebn. Seed Dormancy Tested in Soil Conditions. Agronomy 2020, 10, 1026. https://doi.org/10.3390/agronomy10071026

AMA Style

Renzi JP, Brus J, Pirintsos S, Erdős L, Duchoslav M, Smýkal P. Release of Medicago truncatula Gaertn. and Pisum sativum subsp. elatius (M. Bieb.) Asch. et Graebn. Seed Dormancy Tested in Soil Conditions. Agronomy. 2020; 10(7):1026. https://doi.org/10.3390/agronomy10071026

Chicago/Turabian Style

Renzi, Juan P.; Brus, Jan; Pirintsos, Stergios; Erdős, László; Duchoslav, Martin; Smýkal, Petr. 2020. "Release of Medicago truncatula Gaertn. and Pisum sativum subsp. elatius (M. Bieb.) Asch. et Graebn. Seed Dormancy Tested in Soil Conditions" Agronomy 10, no. 7: 1026. https://doi.org/10.3390/agronomy10071026

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