Academic Journal
Analysis of Reciprocal-transfer Experiments to Estimate the Length of Phases having Different Responses to Temperature
| العنوان: | Analysis of Reciprocal-transfer Experiments to Estimate the Length of Phases having Different Responses to Temperature |
|---|---|
| المؤلفون: | Yin, Xinyou |
| بيانات النشر: | Oxford University Press |
| سنة النشر: | 2008 |
| المجموعة: | HighWire Press (Stanford University) |
| مصطلحات موضوعية: | TECHNICAL ARTICLES |
| الوصف: | Background and Aims The responsiveness of plant ontogeny to temperature may change with plant age. These changes may best be identified by experiments in which individual plants are transferred in a time series from low temperature (LT) to high temperature (HT), and vice versa. Any change in the value of the slope for a plot of the duration taken to complete a developmental phase against time of transfer (either LT to HT or HT to LT) will indicate a change in the temperature responsiveness of development, and the time at which this change occurs. The analysis of this type of reciprocal-transfer experiment is usually performed by regression for each of the visually identified linear sub-phases, separately for the data for LT-to-HT and for HT-to-LT transfers. Here, a mathematical approach is presented using a single curve-fitting procedure. Methods Both LT-to-HT and HT-to-LT transfers are combined in a single curve-fitting procedure. This new, combined approach is illustrated using a published data set for three rice ( Oryza sativa ) cultivars, where the pre-flowering duration is divided into three sub-phases, and temperature responsiveness is generally stronger during the second than the first and third sub-phases. Results and Conclusions This new model approach provides an objective method, relative to the separate analyses, for assigning data points to a particular sub-phase. Plausible parameter values can be obtained from capturing the whole data of both sets of transfers, which otherwise could not be obtained from the separate-analysis method. Furthermore, the length of sub-phases identified from the LT-to-HT transfers is consistent, in terms of its response to temperature, with that identified from the HT-to-LT transfers. Re-analysis of the published rice data using the new approach reveals that in addition to temperature sensitivity, the optimum temperature of pre-flowering development may vary with plant age. The new approach gives rise to a generalized model for the analysis of reciprocal transfer ... |
| نوع الوثيقة: | text |
| وصف الملف: | text/html |
| اللغة: | English |
| Relation: | http://aob.oxfordjournals.org/cgi/content/short/101/4/603; http://dx.doi.org/10.1093/aob/mcm319 |
| DOI: | 10.1093/aob/mcm319 |
| الاتاحة: | http://aob.oxfordjournals.org/cgi/content/short/101/4/603 https://doi.org/10.1093/aob/mcm319 |
| Rights: | Copyright (C) 2008, Oxford University Press |
| رقم الانضمام: | edsbas.C6955A5C |
| قاعدة البيانات: | BASE |
| DOI: | 10.1093/aob/mcm319 |
|---|