000135341 001__ 135341
000135341 005__ 20240522124406.0
000135341 0247_ $$2doi$$a10.1007/s11104-024-06642-6
000135341 0248_ $$2sideral$$a138615
000135341 037__ $$aART-2024-138615
000135341 041__ $$aeng
000135341 100__ $$aMoret-Fernández, D.
000135341 245__ $$aA new experimental device for germinating seeds under controlled soil water potentials, a step beyond PEG
000135341 260__ $$c2024
000135341 5060_ $$aAccess copy available to the general public$$fUnrestricted
000135341 5203_ $$aBackground and aims: Germination as a function of soil water potential (h) is modelled using polyethylene glycol (PEG). But, PEG would not consider soil properties. Our objective is to show the limitations of PEG to model germination in real soils. Using a new device, the tension germinator (TG), we show the interaction between soil type, h and seed characteristics on seed germination. Methods: TG (A Mariotte reservoir that supplies water at constant h to a porous substrate on which seeds are deposited). Barley (Hordeum vulgare L.) and vetch (Vicia sativa L.) seeds were placed on TG with loam (TG-loam) and sand (TG-sand), and h of 0, -0.002, -0.006 MPa. Then, the imbibition curves were monitored. PEG experiments (0 to -2.5 MPa) were performed to estimate the critical h, hPEG, or h from which the imbibition curve decreases compared with that at 0 MPa. PEG curves for 0 > h > -0.01 MPa were compared with TG. Results. PEG and TG curves were not different at 0 MPa. hPEG for barley and vetch was within [0, -0.01] MPa. While no differences were observed between PEG at [0, -0.01] MPa and TG-loam curves, TG-sand curves at -0.002 and -0.006 MPa were different to those of PEG. Conversely to PEG at -0.01 MPa, no imbibition was observed in TG-sand (-0.006 MPa). A negligible influence of h in TG-loam was observed. Conclusions: PEG is not adequate to describe seed germination in soil. But the TG allows monitoring seed germination in real soils and controlled h.
000135341 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000135341 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000135341 700__ $$0(orcid)0000-0001-7037-4970$$aTormo, J.$$uUniversidad de Zaragoza
000135341 700__ $$aLópez, M. V.
000135341 700__ $$0(orcid)0000-0001-9646-8422$$aCirujeda, A.
000135341 700__ $$aBochet, E.
000135341 7102_ $$15011$$2220$$aUniversidad de Zaragoza$$bDpto. CC.Agrar.y Medio Natural$$cÁrea Ecología
000135341 773__ $$g(2024), [14 pp.]$$pPlant soil$$tPLANT AND SOIL$$x0032-079X
000135341 8564_ $$s1563358$$uhttps://zaguan.unizar.es/record/135341/files/texto_completo.pdf$$yVersión publicada
000135341 8564_ $$s1682217$$uhttps://zaguan.unizar.es/record/135341/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000135341 909CO $$ooai:zaguan.unizar.es:135341$$particulos$$pdriver
000135341 951__ $$a2024-05-22-10:17:31
000135341 980__ $$aARTICLE