Seed weight and trade-offs: an experiment in false rhodes grasses under different aridity conditions
The false Rhodes grasses [Leptochloa crinita (Lag.) P.M. Peterson and N.W. Snow and Leptochloa pluriflora (E. Fourn.) P.M. Peterson and N.W. Snow] are considered valuable native forage resources for arid and semiarid rangelands in Argentina and the United States. Effectively using plant materials...
| Autores principales: | , , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
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MDPI
2023
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/14551 https://www.mdpi.com/2223-7747/11/21/2887 https://doi.org/10.3390/plants11212887 |
| _version_ | 1855485383415955456 |
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| author | Marinoni, Lorena del Rosario Zabala, Juan Marcelo Quiroga, Raul Emiliano Richard, Geraldina Alicia Pensiero, José Francisco |
| author_browse | Marinoni, Lorena del Rosario Pensiero, José Francisco Quiroga, Raul Emiliano Richard, Geraldina Alicia Zabala, Juan Marcelo |
| author_facet | Marinoni, Lorena del Rosario Zabala, Juan Marcelo Quiroga, Raul Emiliano Richard, Geraldina Alicia Pensiero, José Francisco |
| author_sort | Marinoni, Lorena del Rosario |
| collection | INTA Digital |
| description | The false Rhodes grasses [Leptochloa crinita (Lag.) P.M. Peterson and N.W. Snow and
Leptochloa pluriflora (E. Fourn.) P.M. Peterson and N.W. Snow] are considered valuable native forage
resources for arid and semiarid rangelands in Argentina and the United States. Effectively using
plant materials as forage under aridity conditions requires understanding their resource allocation
under those conditions. In the present study, plant functional traits were evaluated in six populations
of each false Rhodes grass species from different geographic origin in a humid and an arid region.
The evaluation was focused on seed weight, due to the key role of this trait in plant survival.
The implication of seed weight in germination under osmotic stress and trade-off relationships
between functional traits were also analysed. A fixed ontogenetic variation was found in both
species, since populations maintained a stable seed weight across environments. The tolerance to
osmotic stress at germination stage was more related to seed weight than to population origin or
maternal environment of seeds; heavier-seeded populations produced heavier seedlings instead
of a higher number of germinated seeds or higher germination rates. Some traits varied between
environments but other traits exhibited a fixed response. Variation patterns among populations
were similar within environments and in some cases even for populations from the same geographic
origin, revealing a fixed ontogenetic variation; this phenomenon was clearer in L. crinita than in
L. pluriflora. Moreover, several different trade-off strategies were detected in both species. These
results reinforce the knowledge about the key role of seed weight in survival and performance of
seedlings at initial growth stages under arid conditions; however, at advanced stages, other traits
would have an important function in growth and development of false Rhodes grasses. |
| format | Artículo |
| id | INTA14551 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2023 |
| publishDateRange | 2023 |
| publishDateSort | 2023 |
| publisher | MDPI |
| publisherStr | MDPI |
| record_format | dspace |
| spelling | INTA145512024-11-13T12:07:38Z Seed weight and trade-offs: an experiment in false rhodes grasses under different aridity conditions Marinoni, Lorena del Rosario Zabala, Juan Marcelo Quiroga, Raul Emiliano Richard, Geraldina Alicia Pensiero, José Francisco Chloris Gayana Germinación Rasgos Biológicos Peso de las Semillas Adaptación Zona Arida Germination Biological Traits Seed Weight Adaptation Arid Zones Leptochloa Crinita Leptochloa Pluriflora Rhodes Grass The false Rhodes grasses [Leptochloa crinita (Lag.) P.M. Peterson and N.W. Snow and Leptochloa pluriflora (E. Fourn.) P.M. Peterson and N.W. Snow] are considered valuable native forage resources for arid and semiarid rangelands in Argentina and the United States. Effectively using plant materials as forage under aridity conditions requires understanding their resource allocation under those conditions. In the present study, plant functional traits were evaluated in six populations of each false Rhodes grass species from different geographic origin in a humid and an arid region. The evaluation was focused on seed weight, due to the key role of this trait in plant survival. The implication of seed weight in germination under osmotic stress and trade-off relationships between functional traits were also analysed. A fixed ontogenetic variation was found in both species, since populations maintained a stable seed weight across environments. The tolerance to osmotic stress at germination stage was more related to seed weight than to population origin or maternal environment of seeds; heavier-seeded populations produced heavier seedlings instead of a higher number of germinated seeds or higher germination rates. Some traits varied between environments but other traits exhibited a fixed response. Variation patterns among populations were similar within environments and in some cases even for populations from the same geographic origin, revealing a fixed ontogenetic variation; this phenomenon was clearer in L. crinita than in L. pluriflora. Moreover, several different trade-off strategies were detected in both species. These results reinforce the knowledge about the key role of seed weight in survival and performance of seedlings at initial growth stages under arid conditions; however, at advanced stages, other traits would have an important function in growth and development of false Rhodes grasses. EEA Catamarca Fil: Marinoni, Lorena. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Instituto de Ciencias Agropecuarias del Litoral (ICiAgro Litoral); Argentina Fil: Marinoni, Lorena. Universidad Nacional del Litoral. Facultad de Ciencias Agrarias. Instituto de Ciencias Agropecuarias del Litoral (ICiAgro Litoral); Argentina Fil: Zabala, Juan Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Instituto de Ciencias Agropecuarias del Litoral (ICiAgro Litoral); Argentina Fil: Zabala, Juan Marcelo. Universidad Nacional del Litoral. Facultad de Ciencias Agrarias. Instituto de Ciencias Agropecuarias del Litoral (ICiAgro Litoral); Argentina Fil: Quiroga, Raul Emiliano. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Catamarca; Argentina Fil: Quiroga, Raul Emiliano. Universidad Nacional de Catamarca. Facultad de Ciencias Agrarias. Cátedra de Manejo de Pastizales Naturales; Argentina Fil: Richard, Geraldina Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Instituto de Ciencias Agropecuarias del Litoral (ICiAgro Litoral); Argentina Fil: Richard, Geraldina Alicia. Universidad Nacional del Litoral. Facultad de Ciencias Agrarias. Instituto de Ciencias Agropecuarias del Litoral (ICiAgro Litoral); Argentina Fil: Pensiero, José Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Instituto de Ciencias Agropecuarias del Litoral (ICiAgro Litoral); Argentina Fil: Pensiero, José Francisco. Universidad Nacional del Litoral. Facultad de Ciencias Agrarias. Instituto de Ciencias Agropecuarias del Litoral (ICiAgro Litoral); Argentina 2023-04-21T13:26:37Z 2023-04-21T13:26:37Z 2022 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/14551 https://www.mdpi.com/2223-7747/11/21/2887 Marinoni, L.; Zabala, J.M.; Quiroga, R.E.; Richard, G.A.; Pensiero, J.F. SeedWeight and Trade-Offs: An Experiment in False Rhodes Grasses under Different Aridity Conditions. Plants 2022, 11, 2887. https://doi.org/10.3390/ plants11212887 2223-7747 (Online) https://doi.org/10.3390/plants11212887 eng info:eu-repo/semantics/openAccess application/pdf MDPI Plants 11 (21) : 2887. (2022) |
| spellingShingle | Chloris Gayana Germinación Rasgos Biológicos Peso de las Semillas Adaptación Zona Arida Germination Biological Traits Seed Weight Adaptation Arid Zones Leptochloa Crinita Leptochloa Pluriflora Rhodes Grass Marinoni, Lorena del Rosario Zabala, Juan Marcelo Quiroga, Raul Emiliano Richard, Geraldina Alicia Pensiero, José Francisco Seed weight and trade-offs: an experiment in false rhodes grasses under different aridity conditions |
| title | Seed weight and trade-offs: an experiment in false rhodes grasses under different aridity conditions |
| title_full | Seed weight and trade-offs: an experiment in false rhodes grasses under different aridity conditions |
| title_fullStr | Seed weight and trade-offs: an experiment in false rhodes grasses under different aridity conditions |
| title_full_unstemmed | Seed weight and trade-offs: an experiment in false rhodes grasses under different aridity conditions |
| title_short | Seed weight and trade-offs: an experiment in false rhodes grasses under different aridity conditions |
| title_sort | seed weight and trade offs an experiment in false rhodes grasses under different aridity conditions |
| topic | Chloris Gayana Germinación Rasgos Biológicos Peso de las Semillas Adaptación Zona Arida Germination Biological Traits Seed Weight Adaptation Arid Zones Leptochloa Crinita Leptochloa Pluriflora Rhodes Grass |
| url | http://hdl.handle.net/20.500.12123/14551 https://www.mdpi.com/2223-7747/11/21/2887 https://doi.org/10.3390/plants11212887 |
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