Yield gap analysis between dry and wet season rice crop grown under high-yielding management conditions
Rice (Oryza sativa L.) grain yield highly varies depending on cropping seasons under the tropical irrigated conditions. This study aimed to (i) compare the grain yield of rice in dry season (DS) and wet season (WS) and (ii) determine climatic and physiological factors critical to the yield gap betwe...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Wiley
2008
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/166303 |
| _version_ | 1855532261795954688 |
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| author | Yang, Woonho Peng, Shaobing Laza, Rebecca C. Visperas, Romeo M. Dionisio-Sese, Maribel L. |
| author_browse | Dionisio-Sese, Maribel L. Laza, Rebecca C. Peng, Shaobing Visperas, Romeo M. Yang, Woonho |
| author_facet | Yang, Woonho Peng, Shaobing Laza, Rebecca C. Visperas, Romeo M. Dionisio-Sese, Maribel L. |
| author_sort | Yang, Woonho |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Rice (Oryza sativa L.) grain yield highly varies depending on cropping seasons under the tropical irrigated conditions. This study aimed to (i) compare the grain yield of rice in dry season (DS) and wet season (WS) and (ii) determine climatic and physiological factors critical to the yield gap between DS and WS. Six genotypes, two each for indica inbred, indica/indica F1 hybrid, and the second‐generation new plant type, were grown in DS and WS of 2003 and 2004. Significantly higher grain yields were achieved in DS than in WS by 94% for 2003 and 35% for 2004. Mean daily radiation was higher in DS than WS, particularly during grain filling stage than before flowering. The greater radiation during ripening in DS contributed to the higher grain yield. Major difference in biomass production between DS and WS occurred after flowering. Greater biomass accumulation from flowering to physiological maturity was associated with higher grain yield in DS than in WS, but not translocation of biomass accumulated before flowering to grains. Higher grain yield in DS was partly the result of greater spikelets due to higher spikelet production efficiency per unit biomass at flowering. Aboveground total biomass at physiological maturity was a crucial physiological factor to the yield gap between DS and WS. Daily mean radiation and biomass accumulation during ripening, and sink production efficiency per unit biomass were critical factors to the yield gap of rice between DS and WS under the high‐yielding tropical irrigated conditions. |
| format | Journal Article |
| id | CGSpace166303 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2008 |
| publishDateRange | 2008 |
| publishDateSort | 2008 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace1663032025-05-14T10:24:18Z Yield gap analysis between dry and wet season rice crop grown under high-yielding management conditions Yang, Woonho Peng, Shaobing Laza, Rebecca C. Visperas, Romeo M. Dionisio-Sese, Maribel L. biomass production dry matter accumulation dry season genotype environment interaction radiation spikelets wet season yields Rice (Oryza sativa L.) grain yield highly varies depending on cropping seasons under the tropical irrigated conditions. This study aimed to (i) compare the grain yield of rice in dry season (DS) and wet season (WS) and (ii) determine climatic and physiological factors critical to the yield gap between DS and WS. Six genotypes, two each for indica inbred, indica/indica F1 hybrid, and the second‐generation new plant type, were grown in DS and WS of 2003 and 2004. Significantly higher grain yields were achieved in DS than in WS by 94% for 2003 and 35% for 2004. Mean daily radiation was higher in DS than WS, particularly during grain filling stage than before flowering. The greater radiation during ripening in DS contributed to the higher grain yield. Major difference in biomass production between DS and WS occurred after flowering. Greater biomass accumulation from flowering to physiological maturity was associated with higher grain yield in DS than in WS, but not translocation of biomass accumulated before flowering to grains. Higher grain yield in DS was partly the result of greater spikelets due to higher spikelet production efficiency per unit biomass at flowering. Aboveground total biomass at physiological maturity was a crucial physiological factor to the yield gap between DS and WS. Daily mean radiation and biomass accumulation during ripening, and sink production efficiency per unit biomass were critical factors to the yield gap of rice between DS and WS under the high‐yielding tropical irrigated conditions. 2008-09 2024-12-19T12:56:07Z 2024-12-19T12:56:07Z Journal Article https://hdl.handle.net/10568/166303 en Wiley Yang, Woonho; Peng, Shaobing; Laza, Rebecca C.; Visperas, Romeo M. and Dionisio‐Sese, Maribel L. 2008. Yield gap analysis between dry and wet season rice crop grown under high-yielding management conditions. Agronomy Journal, Volume 100 no. 5 p. 1390-1395 |
| spellingShingle | biomass production dry matter accumulation dry season genotype environment interaction radiation spikelets wet season yields Yang, Woonho Peng, Shaobing Laza, Rebecca C. Visperas, Romeo M. Dionisio-Sese, Maribel L. Yield gap analysis between dry and wet season rice crop grown under high-yielding management conditions |
| title | Yield gap analysis between dry and wet season rice crop grown under high-yielding management conditions |
| title_full | Yield gap analysis between dry and wet season rice crop grown under high-yielding management conditions |
| title_fullStr | Yield gap analysis between dry and wet season rice crop grown under high-yielding management conditions |
| title_full_unstemmed | Yield gap analysis between dry and wet season rice crop grown under high-yielding management conditions |
| title_short | Yield gap analysis between dry and wet season rice crop grown under high-yielding management conditions |
| title_sort | yield gap analysis between dry and wet season rice crop grown under high yielding management conditions |
| topic | biomass production dry matter accumulation dry season genotype environment interaction radiation spikelets wet season yields |
| url | https://hdl.handle.net/10568/166303 |
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