Publications by authors named "Xing-yu Hao"
Article Synopsis
- The paper compares three models—the double exponential (DE) model, non-rectangular hyperbolic (NRH) model, and a mechanistic model created by Z-P Ye—in estimating key parameters of photosynthesis: maximum electron transport rate and saturation light intensity.
- The mechanistic model proved to be the most accurate, fitting well to curves from various photosynthetic organisms even under conditions of photoinhibition, while the DE model often overestimated maximum rates and the light required.
- The NRH model also fell short, particularly under dynamic conditions, leading to inaccurate estimates of critical parameters, highlighting the mechanistic model's superiority in studying photosynthetic light responses.
Article Synopsis
- The frequency of drought is expected to rise due to climate change, which, along with higher atmospheric CO2 levels, will impact crop growth, specifically foxtail millet in this study.
- Experiments showed that elevated CO2 increased starch and antioxidant enzyme levels in millet leaves, enhancing photosynthesis and water use efficiency, particularly under mild drought.
- Under mild drought, higher CO2 concentrations significantly boosted grain yield and spike numbers, suggesting that elevated CO2 can mitigate some negative effects of reduced water availability on millet production.
[Effects of elevated CO concentration on photosynthetic acclimation of winter wheat under drought condition].
Ying Yong Sheng Tai Xue Bao
December 2021
Article Synopsis
- The study investigates how elevated CO2 levels affect photosynthesis in winter wheat, particularly under drought conditions, and focuses on the relationship between source-sink dynamics and photosynthetic acclimation.
- An experiment was conducted in climate chambers with two CO2 concentrations (400 and 600 μmol·mol) and varying soil moisture levels to measure different photosynthetic parameters and plant yield at key growth stages.
- Results indicated that while elevated CO2 improved certain photosynthetic rates during the elongation stage, it negatively impacted photochemical efficiency and related processes during the heading stage, although it still contributed to increased grain yield due to enhanced performance earlier in growth.
Article Synopsis
- * Modern cultivated wheat (like Z9023) showed improved stomatal conductance and photosynthetic performance compared to wild species under elevated CO levels, which may help them adapt to future climate changes.
- * The findings suggest that increasing CO levels could provide opportunities for breeders to develop cultivars with enhanced nitrogen use efficiency, improving resilience against climate change.
[Elevated CO concentration mitigate the effects of drought stress on soybean].
Ying Yong Sheng Tai Xue Bao
January 2021
Article Synopsis
- Climate change, especially due to rising carbon dioxide (CO2) levels and drought, affects how soybeans grow.
- A study looked at how different CO2 levels and drought stress change soybean's ability to make food, their pigments, hormones, and important proteins.
- Findings showed more CO2 helped soybeans use water better and grow, but drought reduced some pigments and affected certain proteins and gene activities.
We used an OTC (open top chamber) system to study the effects of elevated CO concentration (atmospheric CO concentration + 200 #x03BC;mol·mol) on the growth and photosynthetic physiology of Hylotelephium erythrostictum. Elevated CO concentration decreased the leaf stomatal density of the upper and lower epidermis of H. erythrostictum by 16.
View Article and Find Full Text PDFField experiments were carried out to study the effects of different mulching times (30 or 60 d after previous wheat harvest) and mulching methods (whole-mulching, half-mulching and no- mulching) on wheat plant N absorption and assimilation after deep plowing in fallow period on dryland. The results showed that mulching improved water storage efficiency in fallow period and soil water storage of 0-300 cm at sowing stage significantly. Mulching in fallow period, especially the whole-mulching, increased the N accumulation amount of each growth stage, N translocation amount and rate before anthesis (NABA) , and N accumulation amount after anthesis (NAAA) and grain N.
View Article and Find Full Text PDF[Effects of elevated atmospheric CO2 concentration on mung bean leaf photosynthesis and chlorophyll fluorescence parameters].
Ying Yong Sheng Tai Xue Bao
October 2011
By using free air CO2 enrichment (FACE) system, a pot experiment under field condition was conducted to study the effects of elevated CO2 concentration (550 +/- 60 micromol mol(-1)) on the leaf photosynthesis and chlorophyll fluorescence parameters of mung bean. Comparing with the control (CO2 concentration averagely 389 +/- 40 micromol mol(-1)), elevated CO2 concentration increased the leaf intercellular CO2 concentration (Ci) and net photosynthesis rate (P(n)) at flowering and pod growth stage by 9.8% and 11.
View Article and Find Full Text PDF[Impact of climatic change on soybean production: a review].
Ying Yong Sheng Tai Xue Bao
October 2010
Since the industrial revolution, the rapid increase of global atmospheric concentration of CO2 and other greenhouse gases has induced the global warming and the change of global precipitation pattern. The growth, development, yield, and quality of soybean are subject to all these changes of climatic conditions. Soybean is one of the major grain and oil crops in the world and in China, and any change in the soybean production under future climate scenario will affect the grain- and edible oil security nationally and internationally.
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