Infrared thermometry for drought phenotyping of inter and intra specific upland rice lines
The purpose of the present study was to evaluate the use of infrared thermometry in the characterization of inter specific (Oryza glaberrima x Oryza sativa cv Caiapó) and intra specific upland rice lines for drought tolerance. The experiment, carried out at Porangatu in the State of Goiás, was submi...
| Autores principales: | , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
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FapUNIFESP
2010
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/42978 |
| _version_ | 1855541897234219008 |
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| author | Guimarães, C.M. Stone, LF Lorieux, Mathias Oliveira, J.P. de Alencar, G Dias, R.A.A. |
| author_browse | Alencar, G Dias, R.A.A. Guimarães, C.M. Lorieux, Mathias Oliveira, J.P. de Stone, LF |
| author_facet | Guimarães, C.M. Stone, LF Lorieux, Mathias Oliveira, J.P. de Alencar, G Dias, R.A.A. |
| author_sort | Guimarães, C.M. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The purpose of the present study was to evaluate the use of infrared thermometry in the characterization of inter specific (Oryza glaberrima x Oryza sativa cv Caiapó) and intra specific upland rice lines for drought tolerance. The experiment, carried out at Porangatu in the State of Goiás, was submitted to adequate soil moisture for up to 30 days following emergence when a moderate water stress treatment was imposed (about 50% of the applied irrigation in a control plot in which adequate conditions of soil moisture were maintained). It has been observed that lines with higher grain yields under water stress produced taller plants with denser panicles and well-formed grains as well as lower spikelet sterility. A positive correlation between canopy temperature and spikelet sterility was observed; and a negative correlation existed between canopy temperature and 100-grain weight, plant height, tiller fertility, and grain yield. Except for tiller fertility, all components showed correlation with grain yield; in the case of spikelet sterility, the relationship was negative. It has been inferred that O. glaberrima confers to its lines higher rusticity where water stress is concerned, and that infrared thermometry is an important supporting tool for phenotyping drought tolerance. |
| format | Journal Article |
| id | CGSpace42978 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2010 |
| publishDateRange | 2010 |
| publishDateSort | 2010 |
| publisher | FapUNIFESP |
| publisherStr | FapUNIFESP |
| record_format | dspace |
| spelling | CGSpace429782025-12-08T09:54:28Z Infrared thermometry for drought phenotyping of inter and intra specific upland rice lines Guimarães, C.M. Stone, LF Lorieux, Mathias Oliveira, J.P. de Alencar, G Dias, R.A.A. oryza sativa drought tolerance upland rice rice tolerancia a la sequía arroz de secano arroz The purpose of the present study was to evaluate the use of infrared thermometry in the characterization of inter specific (Oryza glaberrima x Oryza sativa cv Caiapó) and intra specific upland rice lines for drought tolerance. The experiment, carried out at Porangatu in the State of Goiás, was submitted to adequate soil moisture for up to 30 days following emergence when a moderate water stress treatment was imposed (about 50% of the applied irrigation in a control plot in which adequate conditions of soil moisture were maintained). It has been observed that lines with higher grain yields under water stress produced taller plants with denser panicles and well-formed grains as well as lower spikelet sterility. A positive correlation between canopy temperature and spikelet sterility was observed; and a negative correlation existed between canopy temperature and 100-grain weight, plant height, tiller fertility, and grain yield. Except for tiller fertility, all components showed correlation with grain yield; in the case of spikelet sterility, the relationship was negative. It has been inferred that O. glaberrima confers to its lines higher rusticity where water stress is concerned, and that infrared thermometry is an important supporting tool for phenotyping drought tolerance. Propôs-se avaliar, no presente estudo, a técnica da termometria ao infravermelho na caracterização de linhagens interespecíficas (Oryza glaberrima x Oryza sativa cv Caiapó) e intraespecíficas de arroz para tolerância a seca. O experimento, conduzido em Porangatu, GO, foi submetido a condições adequadas de umidade no solo até 30 dias após a emergência, quando então foi implantado um tratamento com deficiência hídrica moderada (aproximadamente 50% da irrigação aplicada em uma parcela testemunha, com condições adequadas de umidade no solo). Verificou-se que as linhagens mais produtivas em condições de deficiência hídrica apresentaram plantas mais altas, com panículas mais densas e com grãos mais bem formados, com menor esterilidade de espiguetas. Observou-se, também, que a temperatura das folhas se correlacionou positivamente com a esterilidade de espiguetas e negativamente com a massa de 100 grãos, altura das plantas, fertilidade de perfilhos e produtividade. Exceto a fertilidade de perfilhos, os demais componentes se correlacionaram com a produtividade de grãos, sendo que com a esterilidade de espiguetas a correlação foi negativa. Concluiu-se que a O. glaberrima confere, às suas progênies, maior rusticidade à deficiência hídrica e que a termometria ao infravermelho é uma técnica auxiliar importante na fenotipagem para tolerância a seca. 2010-02 2014-09-24T07:58:51Z 2014-09-24T07:58:51Z Journal Article https://hdl.handle.net/10568/42978 en Open Access FapUNIFESP |
| spellingShingle | oryza sativa drought tolerance upland rice rice tolerancia a la sequía arroz de secano arroz Guimarães, C.M. Stone, LF Lorieux, Mathias Oliveira, J.P. de Alencar, G Dias, R.A.A. Infrared thermometry for drought phenotyping of inter and intra specific upland rice lines |
| title | Infrared thermometry for drought phenotyping of inter and intra specific upland rice lines |
| title_full | Infrared thermometry for drought phenotyping of inter and intra specific upland rice lines |
| title_fullStr | Infrared thermometry for drought phenotyping of inter and intra specific upland rice lines |
| title_full_unstemmed | Infrared thermometry for drought phenotyping of inter and intra specific upland rice lines |
| title_short | Infrared thermometry for drought phenotyping of inter and intra specific upland rice lines |
| title_sort | infrared thermometry for drought phenotyping of inter and intra specific upland rice lines |
| topic | oryza sativa drought tolerance upland rice rice tolerancia a la sequía arroz de secano arroz |
| url | https://hdl.handle.net/10568/42978 |
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