Impact of elevated CO2 and elevated O3 on Beta vulgaris L.: Pigments, metabolites, antioxidants, growth and yield

2013 ◽  
Vol 174 ◽  
pp. 279-288 ◽  
Author(s):  
Sumita Kumari ◽  
Madhoolika Agrawal ◽  
Supriya Tiwari
2020 ◽  
Vol 9 (33) ◽  
pp. cs242050124
Author(s):  
Manasa ◽  
R.V. Manju ◽  
Roy Stephen ◽  
M.M. Viji ◽  
R. Beena ◽  
...  

2002 ◽  
Vol 8 (8) ◽  
pp. 695-709 ◽  
Author(s):  
Elizabeth A. Ainsworth ◽  
Phillip A. Davey ◽  
Carl J. Bernacchi ◽  
Orla C. Dermody ◽  
Emily A. Heaton ◽  
...  

2020 ◽  
Vol 10 (7) ◽  
pp. 2486 ◽  
Author(s):  
Yvette Wohlfahrt ◽  
Susanne Tittmann ◽  
Dominik Schmidt ◽  
Doris Rauhut ◽  
Bernd Honermeier ◽  
...  

Carbon dioxide (CO2) as one of the main factors driving climate change is known to increase grapevine growth and yield and could, therefore, have an impact on the fruit quality of vines. This study reports the effects of elevated CO2 (eCO2) on berry development and bunch structure of two grapevine cultivars (Vitis vinifera L. cvs. Riesling and Cabernet Sauvignon) within the VineyardFACE (Free-Air Carbon Dioxide enrichment) experiment, using must analysis and non-invasive fluorescence sensor technology. Berry development was examined on five dates over three consecutive years by analyzing total soluble solids (TSS), pH, total acidity, organic acids, nutrition status, and non-invasive Multiplex measurements. Before harvest, secondary bunches were collected to examine bunch and berry parameters. Results showed that eCO2 had little impact on berry composition of Riesling and Cabernet Sauvignon during berry development, which could be related to bunch structure or single berry weight within single seasons. Elevated CO2 (eCO2) did not result in modified TSS accumulation during ripening but was directly related to the chlorophyll index SFR_R. Higher single berry weights (SBW), higher malic acid (MA), and lower tartaric acid (TAA) were examined at some stages during development of berries under eCO2 levels. Our study provides evidence that eCO2 did alter some bunch and berry parameters without a negative impact on fruit quality.


2017 ◽  
Vol 3 (02) ◽  
pp. 73-77
Author(s):  
Supriya Tiwari ◽  
N. K. Dubey

Increasing Carbon dioxide (CO2) is an important component of global climate change that has drawn the attention of environmentalists worldwide in the last few decades. Besides acting as an important greenhouse gas, it also produces a stimulatory effect, its instantaneous impact being a significant increase in the plant productivity. Atmospheric CO2 levels have linearly increased from approximately 280 parts per million (ppm) during pre-industrial times to the current level of more than 390 ppm. In past few years, anthropogenic activities led to a rapid increase in global CO2 concentration. Current Intergovernmental Panel on Climate Change (IPCC) projection indicates that atmospheric CO2 concentration will increase over this century, reaching 730-1020 ppm by 2100. An increase in global temperature, ranging from 1.1 to 6.4oC depending on global emission scenarios, will accompany the rise in atmospheric CO2. As CO2 acts as a limiting factor in photosynthesis, the immediate effect of increasing atmospheric CO2 is improved plant productivity, a feature commonly termed as “CO2 fertilization”. Variability in crop responses to the elevated CO2 made the agricultural productivity and food security vulnerable to the climate change. Several studies have shown significant CO2 fertilization effect on crop growth and yield. An increase of 30 % in plant growth and yield has been reported when CO2 concentration has been doubled from 330 to 660 ppm. However, the fertilization effect of elevated CO2 is not very much effective in case of C4 plants which already contain a CO2 concentration mechanism, owing to their specific leaf 2 anatomy called kranz anatomy. As a result, yield increments observed in C4plants are comparatively lower than the C3 plants under similar elevated CO2 concentrations. This review discusses the trends and the causes of increasing CO2 concentration in the atmosphere, its effects on the crop productivity and the discrepancies in the response of C3 and C4 plants to increasing CO2 concentrations.


2010 ◽  
Vol 66 (4) ◽  
pp. 217-226 ◽  
Author(s):  
Ryo MATSUDA ◽  
Katsumi SUZUKI ◽  
Yuka NAKANO ◽  
Hidekazu SASAKI ◽  
Masuyuki TAKAICHI

2021 ◽  
Vol 27 (4) ◽  
pp. 495-504
Author(s):  
Imran Khan ◽  
Muhammad Iqbal ◽  
Malik Muhammad Hashim ◽  
Muhammad Saleem Jilani ◽  
Mohammad Safdar Baloch ◽  
...  

Weed infestation is a major problem and matter of concern as it reduces yield as well as quality of many crops including sugar beet. Manual weeding is very tedious, costly, time consuming and most probably non-availability of trained and skillful labor is another issue. Keeping in view these facts, an experiment was performed to evaluate the efficacy of dual gold on the weed biomass (gm-2) and on the growth and yield components of sugar beet (Beta vulgaris L.) cv. California-KWS during 2013-14 and 2014-15. The study was performed using RCBD having five treatments and three replications. The treatments included different application times (pre-emergence application and application after 15, 30 and 45 days after emergence) of dual gold (s-Metolachlor) and a control (weedy check). Data were recorded on fresh and dry weed biomasses (g m-2), number of leaves plant-1, leaf area plant-1 (cm2), leaf and root weights plant-1 (g), sucrose%, TSS%, root and sugar yields (t ha-1). The results showed significant variation among the treatments for all parameters during both years of study. Among the treatments the dual gold (s-Metolachlor) applied as pre-emergence reduced weed fresh and dry biomasses (g m-2) and also enhanced number of leaves plant-1, leaf area (cm2), leaf and root weight plant-1, sucrose%, TSS%, root and sugar yields (t ha-1) during both years. Hence it is concluded that dual gold (s-Metolachlor) applied as pre-emergence is best for eradicating weeds at early stages of growth and hence improving yield and quality of sugar beet under Dera Ismail Khan Conditions.


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