Critical period for seed number determination in soybean as determined by crop growth rate, duration, and dry matter accumulation
Seed number (SN) is positively associated with aboveground dry matter (ADM) accumulation in most crop species. In soybean, there are discrepancies among studies relative to the start and end of the critical period for seed number determination. The objective of this study was to more precisely ident...
| Main Authors: | , , , , , , , |
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| Format: | Artículo |
| Language: | Inglés |
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Elsevier
2021
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| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.12123/8760 https://www.sciencedirect.com/science/article/abs/pii/S0378429020313009 https://doi.org/10.1016/j.fcr.2020.108016 |
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| author | Monzon, Juan Pablo Cafaro La Menza, Nicolás Cerrudo, Aníbal Alejandro Canepa, Matías Rattalino Edreiraa, Juan Ignacio Spechta, James Andrade, Fernando Hector Grassinia, Patricio |
| author_browse | Andrade, Fernando Hector Cafaro La Menza, Nicolás Canepa, Matías Cerrudo, Aníbal Alejandro Grassinia, Patricio Monzon, Juan Pablo Rattalino Edreiraa, Juan Ignacio Spechta, James |
| author_facet | Monzon, Juan Pablo Cafaro La Menza, Nicolás Cerrudo, Aníbal Alejandro Canepa, Matías Rattalino Edreiraa, Juan Ignacio Spechta, James Andrade, Fernando Hector Grassinia, Patricio |
| author_sort | Monzon, Juan Pablo |
| collection | INTA Digital |
| description | Seed number (SN) is positively associated with aboveground dry matter (ADM) accumulation in most crop species. In soybean, there are discrepancies among studies relative to the start and end of the critical period for seed number determination. The objective of this study was to more precisely identify those two stages. To do so, we followed two approaches: (i) analyses of experimental data where differences in SN occurred as a result of variation in crop growth due to weather and management practices and (ii) review of published experiments where soybean was subjected to artificial stresses during specific crop phases. Following the first approach, we analyzed the relationships between SN versus ADM accumulation and its components, crop growth rate (CGR) and duration, for different reproductive phases using data from experiments that portrayed a wide range of environments and management practices. In the second approach, we compared SN values in stressed versus non-stressed treatments. Accumulated ADM during the R3 to R6 phase explained ca. 70 % of the variation in SN across experiments. The CGR during R3-R6 was also a good predictor of SN, but it had lower explanatory power compared with accumulated ADM, because CGR did not account for changes in duration of critical period across experiments. Review of published data, wherein soybean crops were subjected to artificial stresses during different reproductive phases, confirmed that the R3-R6 phase is a critical phase for SN determination in soybean. Key findings of this study were: (i) critical period for SN determination in soybean occurs during the R3-R6 phase and (ii) accumulated ADM during the critical period is a better predictor of SN compared with CGR because it accounts for differences in the duration of the critical period as a result of weather and management. |
| format | Artículo |
| id | INTA8760 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2021 |
| publishDateRange | 2021 |
| publishDateSort | 2021 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | INTA87602021-02-26T12:49:32Z Critical period for seed number determination in soybean as determined by crop growth rate, duration, and dry matter accumulation Monzon, Juan Pablo Cafaro La Menza, Nicolás Cerrudo, Aníbal Alejandro Canepa, Matías Rattalino Edreiraa, Juan Ignacio Spechta, James Andrade, Fernando Hector Grassinia, Patricio Soja Semillas Rendimiento de Cultivos Soybeans Seed Crop Yield Seed number (SN) is positively associated with aboveground dry matter (ADM) accumulation in most crop species. In soybean, there are discrepancies among studies relative to the start and end of the critical period for seed number determination. The objective of this study was to more precisely identify those two stages. To do so, we followed two approaches: (i) analyses of experimental data where differences in SN occurred as a result of variation in crop growth due to weather and management practices and (ii) review of published experiments where soybean was subjected to artificial stresses during specific crop phases. Following the first approach, we analyzed the relationships between SN versus ADM accumulation and its components, crop growth rate (CGR) and duration, for different reproductive phases using data from experiments that portrayed a wide range of environments and management practices. In the second approach, we compared SN values in stressed versus non-stressed treatments. Accumulated ADM during the R3 to R6 phase explained ca. 70 % of the variation in SN across experiments. The CGR during R3-R6 was also a good predictor of SN, but it had lower explanatory power compared with accumulated ADM, because CGR did not account for changes in duration of critical period across experiments. Review of published data, wherein soybean crops were subjected to artificial stresses during different reproductive phases, confirmed that the R3-R6 phase is a critical phase for SN determination in soybean. Key findings of this study were: (i) critical period for SN determination in soybean occurs during the R3-R6 phase and (ii) accumulated ADM during the critical period is a better predictor of SN compared with CGR because it accounts for differences in the duration of the critical period as a result of weather and management. EEA Balcarce Fil: Monzón, Juan Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. University of Nebraska-Lincoln. Department of Agronomy and Horticulture; Estados Unidos. Fil: Cafaro La Menza, Nicolás. University of Nebraska-Lincoln. Department of Agronomy and Horticulture; Estados Unidos. Fil: Cerrudo, Aníbal Alejandro. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Fil: Cánepa, Matías. Actividad privada; Argentina. Fil: Rattalino Edreiraa, Juan Ignacio. University of Nebraska-Lincoln. Department of Agronomy and Horticulture; Estados Unidos. Fil: Spechta, James. University of Nebraska-Lincoln. Department of Agronomy and Horticulture; Estados Unidos. Fil: Andrade, Fernando Héctor. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fil: Grassinia, Patricio. University of Nebraska-Lincoln. Department of Agronomy and Horticulture; Estados Unidos. 2021-02-26T12:39:18Z 2021-02-26T12:39:18Z 2020-12-13 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/8760 https://www.sciencedirect.com/science/article/abs/pii/S0378429020313009 0378-4290 https://doi.org/10.1016/j.fcr.2020.108016 eng info:eu-repo/semantics/restrictedAccess application/pdf Elsevier Field Crops Research 261: 108016 (2021) |
| spellingShingle | Soja Semillas Rendimiento de Cultivos Soybeans Seed Crop Yield Monzon, Juan Pablo Cafaro La Menza, Nicolás Cerrudo, Aníbal Alejandro Canepa, Matías Rattalino Edreiraa, Juan Ignacio Spechta, James Andrade, Fernando Hector Grassinia, Patricio Critical period for seed number determination in soybean as determined by crop growth rate, duration, and dry matter accumulation |
| title | Critical period for seed number determination in soybean as determined by crop growth rate, duration, and dry matter accumulation |
| title_full | Critical period for seed number determination in soybean as determined by crop growth rate, duration, and dry matter accumulation |
| title_fullStr | Critical period for seed number determination in soybean as determined by crop growth rate, duration, and dry matter accumulation |
| title_full_unstemmed | Critical period for seed number determination in soybean as determined by crop growth rate, duration, and dry matter accumulation |
| title_short | Critical period for seed number determination in soybean as determined by crop growth rate, duration, and dry matter accumulation |
| title_sort | critical period for seed number determination in soybean as determined by crop growth rate duration and dry matter accumulation |
| topic | Soja Semillas Rendimiento de Cultivos Soybeans Seed Crop Yield |
| url | http://hdl.handle.net/20.500.12123/8760 https://www.sciencedirect.com/science/article/abs/pii/S0378429020313009 https://doi.org/10.1016/j.fcr.2020.108016 |
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