Maize grain yield components and source-sink relationship as affected by the delay in sowing date
Delaying maize (Zea mays L.) sowing date can diminish grain yields through reductions in the number, size and activity of growing grains (sink strength) and/or reductions in the assimilate supply (source capacity) to grains during the grain filling period. Whether the source capacity or the sink str...
| Main Authors: | , , , , |
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| Format: | info:ar-repo/semantics/artículo |
| Language: | Inglés |
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Elsevier
2019
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| Subjects: | |
| Online Access: | https://www.sciencedirect.com/science/article/pii/S0378429016303082 http://hdl.handle.net/20.500.12123/5018 https://doi.org/10.1016/j.fcr.2016.09.003 |
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| author | Bonelli, Lucas Emmanuel Monzon, Juan Pablo Cerrudo, Aníbal Alejandro Rizzalli, Roberto H. Andrade, Fernando Hector |
| author_browse | Andrade, Fernando Hector Bonelli, Lucas Emmanuel Cerrudo, Aníbal Alejandro Monzon, Juan Pablo Rizzalli, Roberto H. |
| author_facet | Bonelli, Lucas Emmanuel Monzon, Juan Pablo Cerrudo, Aníbal Alejandro Rizzalli, Roberto H. Andrade, Fernando Hector |
| author_sort | Bonelli, Lucas Emmanuel |
| collection | INTA Digital |
| description | Delaying maize (Zea mays L.) sowing date can diminish grain yields through reductions in the number, size and activity of growing grains (sink strength) and/or reductions in the assimilate supply (source capacity) to grains during the grain filling period. Whether the source capacity or the sink strength is the limiting factor for grain yield in late sown maize still remains unclear. Understanding source-sink relationships is relevant to optimize crop management practices, to identify critical processes for crop modelling and to develop breeding strategies. The objective of this work was to assess the effect of delays in maize sowing date on grain yield components and on the source-sink relationship during the grain filling period. Three well irrigated and fertilized maize field experiments were conducted at Balcarce, Argentina (37° 45′ S, 58° 18′ W; 130 m a.s.l.) during 2009–10; 2010–11 and 2011–12 cropping seasons. Sowing dates ranged from October to January covering a broad range of the seasonal photo-thermal variation. Grain yield was affected by sowing date and varied from 1680 g m−2 (early sowings) to 203 g m−2 (late sowings). Grain number per unit area was reduced proportionally less than weight per grain as sowing date was delayed. Variations in grain yield were related to the harvest index, and were closely associated with dry matter accumulation during the post-silking period. The variation of source capacity was higher than that of sink strength during the grain filling period and the source/sink ratio decreased from early to late sowing dates. Results indicate that crop growth during the grain filling period was limited by the sink strength in early sowing dates and by the photosynthetic source capacity in the late ones. |
| format | info:ar-repo/semantics/artículo |
| id | INTA5018 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | INTA50182019-05-02T11:51:54Z Maize grain yield components and source-sink relationship as affected by the delay in sowing date Bonelli, Lucas Emmanuel Monzon, Juan Pablo Cerrudo, Aníbal Alejandro Rizzalli, Roberto H. Andrade, Fernando Hector Maíz Zea Mays Fecha de Siembra Rendimiento Caracteres de Rendimiento Radiación Maize Sowing Date Yields Yield Components Radiation Delaying maize (Zea mays L.) sowing date can diminish grain yields through reductions in the number, size and activity of growing grains (sink strength) and/or reductions in the assimilate supply (source capacity) to grains during the grain filling period. Whether the source capacity or the sink strength is the limiting factor for grain yield in late sown maize still remains unclear. Understanding source-sink relationships is relevant to optimize crop management practices, to identify critical processes for crop modelling and to develop breeding strategies. The objective of this work was to assess the effect of delays in maize sowing date on grain yield components and on the source-sink relationship during the grain filling period. Three well irrigated and fertilized maize field experiments were conducted at Balcarce, Argentina (37° 45′ S, 58° 18′ W; 130 m a.s.l.) during 2009–10; 2010–11 and 2011–12 cropping seasons. Sowing dates ranged from October to January covering a broad range of the seasonal photo-thermal variation. Grain yield was affected by sowing date and varied from 1680 g m−2 (early sowings) to 203 g m−2 (late sowings). Grain number per unit area was reduced proportionally less than weight per grain as sowing date was delayed. Variations in grain yield were related to the harvest index, and were closely associated with dry matter accumulation during the post-silking period. The variation of source capacity was higher than that of sink strength during the grain filling period and the source/sink ratio decreased from early to late sowing dates. Results indicate that crop growth during the grain filling period was limited by the sink strength in early sowing dates and by the photosynthetic source capacity in the late ones. EEA Balcarce Fil: Bonelli, Lucas Emmanuel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina Fil: Monzon, Juan Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fil: Cerrudo, Aníbal Alejandro. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Fil: Rizzalli, Roberto H.. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina Fil: Andrade, Fernando Hector. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. 2019-05-02T11:50:18Z 2019-05-02T11:50:18Z 2016-11 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://www.sciencedirect.com/science/article/pii/S0378429016303082 http://hdl.handle.net/20.500.12123/5018 0378-4290 https://doi.org/10.1016/j.fcr.2016.09.003 eng info:eu-repo/semantics/restrictedAccess application/pdf Elsevier Field Crops Research 198 : 215-225 (November 2016) |
| spellingShingle | Maíz Zea Mays Fecha de Siembra Rendimiento Caracteres de Rendimiento Radiación Maize Sowing Date Yields Yield Components Radiation Bonelli, Lucas Emmanuel Monzon, Juan Pablo Cerrudo, Aníbal Alejandro Rizzalli, Roberto H. Andrade, Fernando Hector Maize grain yield components and source-sink relationship as affected by the delay in sowing date |
| title | Maize grain yield components and source-sink relationship as affected by the delay in sowing date |
| title_full | Maize grain yield components and source-sink relationship as affected by the delay in sowing date |
| title_fullStr | Maize grain yield components and source-sink relationship as affected by the delay in sowing date |
| title_full_unstemmed | Maize grain yield components and source-sink relationship as affected by the delay in sowing date |
| title_short | Maize grain yield components and source-sink relationship as affected by the delay in sowing date |
| title_sort | maize grain yield components and source sink relationship as affected by the delay in sowing date |
| topic | Maíz Zea Mays Fecha de Siembra Rendimiento Caracteres de Rendimiento Radiación Maize Sowing Date Yields Yield Components Radiation |
| url | https://www.sciencedirect.com/science/article/pii/S0378429016303082 http://hdl.handle.net/20.500.12123/5018 https://doi.org/10.1016/j.fcr.2016.09.003 |
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