Photosynthesis of wheat in a warm, irrigated environment

Reynolds, M.P.; B, M.I Delgado; Rodríguez, Mario Gutiérrez; Larqué-Saavedra, Alfonso

doi:10.1016/s0378-4290(99)00077-5

Cited by 148 publications

(103 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…al., 2005). The values of stomatal conductance at low altitude were 0.14-0.17 mol m -2 s -1 , which were relatively lower compared with the values in this study at 0.21-0.69 mol m -2 s -1 and other studies at 0.1-1 mol m -2 s -1 (Reynolds et al, 2000;Martínez-Carrasco et al, 2005). This suggests environmental stresses were at low altitude in the experiment by Kumar et al (2005), leading to lower stomatal conductance and P n at low altitude than at high altitude.…”

Section: Discussioncontrasting

confidence: 92%

Effect of Altitude on the Response of Net Photosynthetic Rate to Carbon Dioxide Increase by Spring Wheat

Fujimura

shi

Iwama

et al. 2010

Plant Production Science

View full text Add to dashboard Cite

Section: Discussioncontrasting

confidence: 92%

Effect of Altitude on the Response of Net Photosynthetic Rate to Carbon Dioxide Increase by Spring Wheat

Fujimura

shi

Iwama

et al. 2010

Plant Production Science

View full text Add to dashboard Cite

“…Probably, the plants in this stage of development were not sufficiently sensitive to changes in gas exchange parameters. Some authors underlined the fact that the largest differences in these parameters in crop plants were recorded during later stages of development (anthesis or grain feeling stage), which indicated that the growth period should be properly selected to improve further selection of better cultivars (Jiang et al 2000;Reynolds et al 2000). These authors indicated that, in addition to leaf aging, Pn rate was closely associated with chlorophyll loss.…”

Section: Discussionmentioning

confidence: 99%

Application of photochemical parameters and several indices based on phenotypical traits to assess intraspecific variation of oat (Avena sativa L.) tolerance to drought

et al. 2017

View full text Add to dashboard Cite

Functionality of the photosynthetic system under water stress is of major importance in drought tolerance. Oat (Avena sativa L.) doubled haploid (DH) lines obtained by pollination of F 1 oat crosses with maize were used to assess the differences in plant genotypic response to soil drought. The investigations were based on the measurements of gas exchange and chlorophyll a fluorescence kinetics. Drought was applied to 17-day-old seedlings by withholding water for 14 days and subsequent plant recovery. Non-stressed optimally watered plants served as controls. Yield components were determined when plants reached full maturity. It was shown differences among the oat lines with respect to drought stress susceptibility (SI) and stress tolerance index mean productivity and drought susceptibility index. Sensitivity to drought of individual DH lines was significantly different, as demonstrated by the correlation between drought susceptibility index and yield components, such as dry weight (GW) or grain number (GN) of the harvested plants. GW and GN were lower in drought-sensitive genotypes exposed to drought stress compared to those resistant to drought. The principal component analysis allow to separate three groups of lines differing in their sensitivity to drought stress and indicated that tolerance to drought in oat has a common genetic background.

show abstract

“…Studies over the past decade have shown that there is a close relationship between the maintenance of the photosynthetic life of flag leaves during grain filling and grain yield in wheat (Gooding et al, 2000;Reynolds et al, 2000;Richards, 2000;Dimmock and Gooding, 2002;Blandino and Reyneri, 2009;El Jarroudi et al, 2010). In addition, modelling approaches estimate that at least 45% of the grain carbohydrate content is derived from the flag leaf (El Jarroudi et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Estimating regional wheat yield from the shape of decreasing curves of green area index temporal profiles retrieved from MODIS data

Kouadio

Duveiller

Djaby

et al. 2012

International Journal of Applied Earth Observation and Geoinfor

View full text Add to dashboard Cite

This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues.Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal, institutional or third party websites are prohibited. a b s t r a c tEarth observation data, owing to their synoptic, timely and repetitive coverage, have been recognized as a valuable tool for crop monitoring at different levels. At the field level, the close correlation between green leaf area (GLA) during maturation and grain yield in wheat revealed that the onset and rate of senescence appeared to be important factors for determining wheat grain yield. Our study sought to explore a simple approach for wheat yield forecasting at the regional level, based on metrics derived from the senescence phase of the green area index (GAI) retrieved from remote sensing data. This study took advantage of recent methodological improvements in which imagery with high revisit frequency but coarse spatial resolution can be exploited to derive crop-specific GAI time series by selecting pixels whose ground-projected instantaneous field of view is dominated by the target crop: winter wheat. A logistic function was used to characterize the GAI senescence phase and derive the metrics of this phase. Four regression-based models involving these metrics (i.e., the maximum GAI value, the senescence rate and the thermal time taken to reach 50% of the green surface in the senescent phase) were related to official wheat yield data. The performances of such models at this regional scale showed that final yield could be estimated with an RMSE of 0.57 ton ha −1 , representing about 7% as relative RMSE. Such an approach may be considered as a first yield estimate that could be performed in order to provide better integrated yield assessments in operational systems.

show abstract

Photosynthesis of wheat in a warm, irrigated environment

Cited by 148 publications

References 37 publications

Effect of Altitude on the Response of Net Photosynthetic Rate to Carbon Dioxide Increase by Spring Wheat

Effect of Altitude on the Response of Net Photosynthetic Rate to Carbon Dioxide Increase by Spring Wheat

Application of photochemical parameters and several indices based on phenotypical traits to assess intraspecific variation of oat (Avena sativa L.) tolerance to drought

Estimating regional wheat yield from the shape of decreasing curves of green area index temporal profiles retrieved from MODIS data

Contact Info

Product

Resources

About