Reproductive development of Lotus tenuis (fabaceae) crop defoliated at different times and intensities
Lotus tenuis forage yield has been quantified under defoliation conditions in pastures, grasslands and under dual-purpose production of both livestock forage and seeds. However, little is known about the effects of defoliation management on L. tenuis flower and pod production and subsequent seed yie...
| Main Authors: | , , , , |
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| Format: | Artículo |
| Language: | Inglés |
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Scientific Research Publishing
2019
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| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.12123/5043 https://www.scirp.org/journal/PaperInformation.aspx?PaperID=67154 https://doi.org/10.4236/ajps.2016.78113 |
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| author | Vignolio, Osvaldo Cambareri, Gustavo Sebastián Petigrosso, Lucas R Murillo, Natalia Lorena Maceira, Nestor Oscar |
| author_browse | Cambareri, Gustavo Sebastián Maceira, Nestor Oscar Murillo, Natalia Lorena Petigrosso, Lucas R Vignolio, Osvaldo |
| author_facet | Vignolio, Osvaldo Cambareri, Gustavo Sebastián Petigrosso, Lucas R Murillo, Natalia Lorena Maceira, Nestor Oscar |
| author_sort | Vignolio, Osvaldo |
| collection | INTA Digital |
| description | Lotus tenuis forage yield has been quantified under defoliation conditions in pastures, grasslands and under dual-purpose production of both livestock forage and seeds. However, little is known about the effects of defoliation management on L. tenuis flower and pod production and subsequent seed yield. Two field experiments were conducted to study the response of L. tenuis to defoliation at different flowering stages and intensities. In Experiment 1, crops were defoliated at the beginning of the flowering (DBF), mid-flowering (DMF) or full flowering (DFF). In Experiment 2, defoliation was in vegetative stage at low (LDI) or high (HDI) intensities. Defoliation in Experiment 1 neither affected plant cover nor the photosynthetically active radiation intercepted by the crop during pod production. There were less umbels with dehiscent (shattered) pods in the DFF treatment than in Control, DBF and DMF treatments. Flower peak occurred first in the Control, DBF and DMF treatments, and eight days later in DFF plots, however, seed yield was not affected (1324 ± 32.8 kg·ha-1). Defoliation intensity did not affect seed yield (962 ± 25.9 kg·ha-1) because of self-compensation which increased harvest index in HDI (14.5% ± 0.6%) compared to the Control and LDI (12.0% ± 0.3%) treatments. Plant survival was not affected by defoliation treatments in any of the experiments. Flowering can be synchronized through defoliation. The blooming of large numbers of flowers in a short time was achieved, reducing the number of shattered pods. Compensatory responses through plant plasticity conferred L. tenuis the ability to overcome defoliation without affecting seed yield. Lotus tenuis defoliation as management tool will be considered in future researches because it is possible to harvest forage and to increase seed yield through a reduction of shattered pods. |
| format | Artículo |
| id | INTA5043 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | Scientific Research Publishing |
| publisherStr | Scientific Research Publishing |
| record_format | dspace |
| spelling | INTA50432019-05-06T15:44:20Z Reproductive development of Lotus tenuis (fabaceae) crop defoliated at different times and intensities Vignolio, Osvaldo Cambareri, Gustavo Sebastián Petigrosso, Lucas R Murillo, Natalia Lorena Maceira, Nestor Oscar Lotus Tenuis Floración Rendimiento Biomasa Corte Flowering Stage Yields Biomass Cuttings Etapa de Floración Narrowleaf Birdsfoot Trefoil Lotus tenuis forage yield has been quantified under defoliation conditions in pastures, grasslands and under dual-purpose production of both livestock forage and seeds. However, little is known about the effects of defoliation management on L. tenuis flower and pod production and subsequent seed yield. Two field experiments were conducted to study the response of L. tenuis to defoliation at different flowering stages and intensities. In Experiment 1, crops were defoliated at the beginning of the flowering (DBF), mid-flowering (DMF) or full flowering (DFF). In Experiment 2, defoliation was in vegetative stage at low (LDI) or high (HDI) intensities. Defoliation in Experiment 1 neither affected plant cover nor the photosynthetically active radiation intercepted by the crop during pod production. There were less umbels with dehiscent (shattered) pods in the DFF treatment than in Control, DBF and DMF treatments. Flower peak occurred first in the Control, DBF and DMF treatments, and eight days later in DFF plots, however, seed yield was not affected (1324 ± 32.8 kg·ha-1). Defoliation intensity did not affect seed yield (962 ± 25.9 kg·ha-1) because of self-compensation which increased harvest index in HDI (14.5% ± 0.6%) compared to the Control and LDI (12.0% ± 0.3%) treatments. Plant survival was not affected by defoliation treatments in any of the experiments. Flowering can be synchronized through defoliation. The blooming of large numbers of flowers in a short time was achieved, reducing the number of shattered pods. Compensatory responses through plant plasticity conferred L. tenuis the ability to overcome defoliation without affecting seed yield. Lotus tenuis defoliation as management tool will be considered in future researches because it is possible to harvest forage and to increase seed yield through a reduction of shattered pods. EEA Balcarce Fil: Vignolio, Osvaldo. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agriarias; Argentina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina Fil: Cambareri, Gustavo Sebastián. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agriarias; Argentina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina Fil: Petigrosso, Lucas R. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agriarias; Argentina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina Fil: Murillo, Natalia Lorena. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agriarias; Argentina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina Fil: Maceira, Nestor Oscar. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agriarias; Argentina 2019-05-06T15:18:11Z 2019-05-06T15:18:11Z 2016 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/5043 https://www.scirp.org/journal/PaperInformation.aspx?PaperID=67154 2158-2742 2158-2750 (Online) https://doi.org/10.4236/ajps.2016.78113 eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Scientific Research Publishing American journal of plant sciences 7 (8) : 1180-1191. (June 2016) |
| spellingShingle | Lotus Tenuis Floración Rendimiento Biomasa Corte Flowering Stage Yields Biomass Cuttings Etapa de Floración Narrowleaf Birdsfoot Trefoil Vignolio, Osvaldo Cambareri, Gustavo Sebastián Petigrosso, Lucas R Murillo, Natalia Lorena Maceira, Nestor Oscar Reproductive development of Lotus tenuis (fabaceae) crop defoliated at different times and intensities |
| title | Reproductive development of Lotus tenuis (fabaceae) crop defoliated at different times and intensities |
| title_full | Reproductive development of Lotus tenuis (fabaceae) crop defoliated at different times and intensities |
| title_fullStr | Reproductive development of Lotus tenuis (fabaceae) crop defoliated at different times and intensities |
| title_full_unstemmed | Reproductive development of Lotus tenuis (fabaceae) crop defoliated at different times and intensities |
| title_short | Reproductive development of Lotus tenuis (fabaceae) crop defoliated at different times and intensities |
| title_sort | reproductive development of lotus tenuis fabaceae crop defoliated at different times and intensities |
| topic | Lotus Tenuis Floración Rendimiento Biomasa Corte Flowering Stage Yields Biomass Cuttings Etapa de Floración Narrowleaf Birdsfoot Trefoil |
| url | http://hdl.handle.net/20.500.12123/5043 https://www.scirp.org/journal/PaperInformation.aspx?PaperID=67154 https://doi.org/10.4236/ajps.2016.78113 |
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