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Article ; Online: Elevated CO

Vanaja, M / Sarkar, B / Sathish, P / Jyothi Lakshmi, N / Yadav, S K / Mohan, Ch / Sushma, A / Yashavanth, B S / Srinivasa Rao, M / Prabhakar, M / Singh, V K

Scientific reports

2024 Volume 14, Issue 1, Page(s) 2928

Abstract: The rising temperatures and levels of carbon dioxide in the atmosphere are anticipated to have a significant impact on the productivity of agricultural crops. Although, the individual effects of elevated ... ...

Abstract	The rising temperatures and levels of carbon dioxide in the atmosphere are anticipated to have a significant impact on the productivity of agricultural crops. Although, the individual effects of elevated CO
MeSH term(s)	Carbon Dioxide/metabolism ; Temperature ; Zea mays ; Photosynthesis/physiology ; Edible Grain/metabolism ; Crops, Agricultural/metabolism
Chemical Substances	Carbon Dioxide (142M471B3J)
Language	English
Publishing date	2024-02-05
Publishing country	England
Document type	Journal Article
ZDB-ID	2615211-3
ISSN	2045-2322 ; 2045-2322
ISSN (online)	2045-2322
ISSN	2045-2322
DOI	10.1038/s41598-024-53343-2
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Impact of water deficit stress on traits influencing the drought tolerance and yield of maize (Zea mays L.) genotypes

Sathish, P. / Vanaja, M. / Jyothi Lakshmi, N. / Sarkar, B. / Vijay Kumar, G. / Vagheera, P. / Mohan, C. H. / Maheswari, M.

Plant Physiology Reports. 2022 Mar., v. 27, no. 1

2022

Abstract: Water deficit stress is one of the major abiotic stresses that severely affects the plant performance and production especially when it occurs during the reproductive phase. That drought research is an ongoing approach as new breeding lines development ... ...

Abstract	Water deficit stress is one of the major abiotic stresses that severely affects the plant performance and production especially when it occurs during the reproductive phase. That drought research is an ongoing approach as new breeding lines development is a continuous process. Therefore, a field experiment was conducted with recently developed 12 maize (Zea mays L.) genotypes under Well Water (WW) and Water Deficit stress (WDS) conditions to quantify the impact of WD stress on phenological, physio-biochemical and yield parameters. The results showed that WD stress significantly altered the Anthesis Silking Interval (ASI) among the genotypes but had no effect on the genotypes DTL-4–1 and Harsha. A significant decrease in net photosynthetic rate, stomatal conductance, transpiration rate and WUE was recorded with WD stress. Accumulation of proline under WD stress was significantly higher with DTL-4–1 and Harsha with a lower malondialdehyde (MDA) content and increased activity of SOD thereby maintained better cell membrane stability (CMS). Biomass and grain yield components were also significantly impacted by the water deficit stress. Among the maize genotypes, DTL-4, DTL-4–1 and Harsha showed better Stress tolerance index (STI). Under WD stress, grain yield showed significant positive association with proline, CMS, kernel number while negative association with MDA and ASI, indicating importance of these traits in imparting WD stress tolerance in maize.
Keywords	Zea mays ; biomass ; cell membranes ; corn ; drought ; drought tolerance ; field experimentation ; flowering ; grain yield ; malondialdehyde ; phenology ; photosynthesis ; proline ; seeds ; stomatal conductance ; stress tolerance ; water stress ; well water
Language	English
Dates of publication	2022-03
Size	p. 109-118.
Publishing place	Springer India
Document type	Article
ZDB-ID	3010000-8
ISSN	2662-2548 ; 2662-253X
ISSN (online)	2662-2548
ISSN	2662-253X
DOI	10.1007/s40502-021-00640-x
Database	NAL-Catalogue (AGRICOLA)

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Article: Genotypic variability in physiological, biomass and yield response to drought stress in pigeonpea.

Vanaja, M / Maheswari, M / Sathish, P / Vagheera, P / Jyothi Lakshmi, N / Vijay Kumar, G / Yadav, S K / Razzaq, Abdul / Singh, Jainender / Sarkar, B

Physiology and molecular biology of plants : an international journal of functional plant biology

2015 Volume 21, Issue 4, Page(s) 541–549

Abstract: Three pigeonpea (Cajanus cajan L. Millsp.) genotypes- GT-1, AKP-1 and PRG-158 with varying crop duration, growth habit and flowering pattern were evaluated for variability in their response for drought stress. Drought stress was imposed at initiation of ... ...

Abstract	Three pigeonpea (Cajanus cajan L. Millsp.) genotypes- GT-1, AKP-1 and PRG-158 with varying crop duration, growth habit and flowering pattern were evaluated for variability in their response for drought stress. Drought stress was imposed at initiation of flowering and the observations on biomass and seed yield parameters were recorded at harvest. The magnitude of response of individual component to drought stress was found to be genotype specific. Drought stress significantly decreased photosynthetic rate (PN), transpiration rate (Tr) and relative water content (RWC) in all the genotypes, however the magnitude of reduction differed with genotype. With drought stress, the reduction of PN was highest in GT-1 while reduction in Tr was highest in PRG-158. The genotype AKP-1, accumulated significantly higher concentrations of osmotic solutes especially proline under water deficit stress, this facilitated it to maintain higher relative water content (RWC) and lower malondialdehyde (MDA) content as compared to other genotypes. Drought stress also impacted biomass production and their partitioning to vegetative and reproductive components at harvest. There was significant variability between the genotypes for seed yield under drought stress while it was non-significant under well-watered condition. Drought stress enhanced flower drop and decreased flower to pod conversion resulting in reduced pod number and seed number in PRG-158 and GT-1. The genotype AKP-1 recorded superior performance for seed yield under stress environment due to its ability in maintaining pod and seed number as well as improved test weight (100 seed weight). Under drought stress, significant positive association of seed yield with proline, seed number, pod number and test weight clearly indicating their role in drought tolerance.
Language	English
Publishing date	2015-10-15
Publishing country	India
Document type	Journal Article
ZDB-ID	2487126-6
ISSN	0974-0430 ; 0971-5894
ISSN (online)	0974-0430
ISSN	0971-5894
DOI	10.1007/s12298-015-0324-0
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Article: Genotypic variability in physiological, biomass and yield response to drought stress in pigeonpea

Vanaja, M / Maheswari, M / Sathish, P / Vagheera, P / Jyothi Lakshmi, N / Vijay Kumar, G / Yadav, S. K / Razzaq, Abdul / Singh, Jainender / Sarkar, B

Physiology and molecular biology of plants. 2015 Oct., v. 21, no. 4

2015

Abstract	Three pigeonpea (Cajanus cajan L. Millsp.) genotypes- GT-1, AKP-1 and PRG-158 with varying crop duration, growth habit and flowering pattern were evaluated for variability in their response for drought stress. Drought stress was imposed at initiation of flowering and the observations on biomass and seed yield parameters were recorded at harvest. The magnitude of response of individual component to drought stress was found to be genotype specific. Drought stress significantly decreased photosynthetic rate (PN), transpiration rate (Tr) and relative water content (RWC) in all the genotypes, however the magnitude of reduction differed with genotype. With drought stress, the reduction of PN was highest in GT-1 while reduction in Tr was highest in PRG-158. The genotype AKP-1, accumulated significantly higher concentrations of osmotic solutes especially proline under water deficit stress, this facilitated it to maintain higher relative water content (RWC) and lower malondialdehyde (MDA) content as compared to other genotypes. Drought stress also impacted biomass production and their partitioning to vegetative and reproductive components at harvest. There was significant variability between the genotypes for seed yield under drought stress while it was non-significant under well-watered condition. Drought stress enhanced flower drop and decreased flower to pod conversion resulting in reduced pod number and seed number in PRG-158 and GT-1. The genotype AKP-1 recorded superior performance for seed yield under stress environment due to its ability in maintaining pod and seed number as well as improved test weight (100 seed weight). Under drought stress, significant positive association of seed yield with proline, seed number, pod number and test weight clearly indicating their role in drought tolerance.
Keywords	Cajanus cajan ; biomass production ; drought tolerance ; flowering ; genetic variation ; genotype ; growth habit ; malondialdehyde ; photosynthesis ; pigeon peas ; proline ; seed yield ; solutes ; transpiration ; water content ; water stress
Language	English
Dates of publication	2015-10
Size	p. 541-549.
Publishing place	Springer India
Document type	Article
ZDB-ID	2487126-6
ISSN	0974-0430 ; 0971-5894
ISSN (online)	0974-0430
ISSN	0971-5894
DOI	10.1007/s12298-015-0324-0
Database	NAL-Catalogue (AGRICOLA)

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Article: Sunflower traits response to elevated co2 levels under cool and warm season conditions

Vanaja, M / Maruthi Sankar, G.R / Maheswari, M / Raghuram Reddy, P / Jyothi, Lakshmi, N / Yadav, S.K / Archana, G / Venkateswarlu, B

Helia. 2014 June 7, v. 36, no. 59

2014

Abstract: A study was conducted in the Open Top Chambers (OTCs) to assess the influence of cool and warm season conditions on the response of sunflower (KBSH-1) to two elevated CO₂ levels (550 and 700 ppm) and compare them with the response to an ambient level ( ... ...

Abstract	A study was conducted in the Open Top Chambers (OTCs) to assess the influence of cool and warm season conditions on the response of sunflower (KBSH-1) to two elevated CO₂ levels (550 and 700 ppm) and compare them with the response to an ambient level (390 ppm). The effect of elevated CO₂ levels on biomass accumulation, seed yield and yield components were quantified in two seasons. Apart from the main effects of CO₂ and different seasons, a significant interaction effect between CO₂ levels and seasons was also observed. The CO₂ levels differed significantly in influencing biomass accumulation, seed yield and number of seeds. Four Principal Components (PC) based on PC analysis explained about 85% of the variability in the response of traits influenced by CO₂ levels in winter and summer seasons. In order to predict total dry weight, seed yield and harvest index obtained in winter and summer seasons, regression models of these variables were also calibrated and used through PC scores of different components. The analysis indicated that significant predictions could be made at ambient level with 550 ppm, compared to 700 ppm of CO₂ level. The plant traits with a significantly higher loading of more than ± 0.70 on PCs were identified and have been recommended for future research in genetic improvement of sunflower, taking into account the change of climate due to elevated CO₂ and temperature levels.
Keywords	Helianthus annuus ; biomass production ; carbon dioxide ; carbon dioxide enrichment ; climate change ; genetic improvement ; harvest index ; prediction ; regression analysis ; seed yield ; seeds ; summer ; temperature ; warm season ; winter
Language	English
Dates of publication	2014-0607
Size	p. 85-98.
Publishing place	De Gruyter
Document type	Article
ZDB-ID	1461016-4
ISSN	2197-0483 ; 1018-1806
ISSN (online)	2197-0483
ISSN	1018-1806
DOI	10.1515/helia.2013.36.59.85
Database	NAL-Catalogue (AGRICOLA)

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Article: Response of C4 (maize) and C3 (sunflower) crop plants to drought stress and enhanced carbon dioxide concentration

Vanaja, M. / Yadav, S.K. / Archana, G. / Jyothi Lakshmi, N. / Ram Reddy, P.R. / Vagheera, P. / Abdul Razak, S.K. / Maheswari, M. / Venkateswarlu, B.

Plant, Soil and Environment. , v. 57, no. 5

2011

Abstract: Sunflower (Helianthus annuus L.) and maize (Zea mays L.) were chosen as C ... 3 ... and C ... 4 ... crop plants and assessed for the impact of enhanced CO ... 2 ... (700 ppm) and its interaction with drought stress in open top chambers (OTCs). The ... ...

Abstract	Sunflower (Helianthus annuus L.) and maize (Zea mays L.) were chosen as C<sub>3 </sub>and C<sub>4</sub> crop plants and assessed for the impact of enhanced CO<sub>2</sub> (700 ppm) and its interaction with drought stress in open top chambers (OTCs). The ameliorative effect of higher CO<sub>2</sub> concentration (eCO<sub>2</sub>) under drought stress was quantified. It is interesting to note that the C<sub>3</sub> crop responded significantly and positively with eCO<sub>2</sub> under both well-watered and drought stress treatments for root: shoot ratio while C<sub>4</sub> crop showed a better response only with the drought stress environment. Root volume showed a positive significant response with CO<sub>2</sub> concentration enhanced over ambient level and the increment in root volume was 146% and 340% in sunflower and maize crops, respectively. The leaf water potential, stomatal conductance and transpiration showed a decreasing trend in both the crops with drought stress and eCO2 showed an ameliorative effect leading to higher P<sub>n</sub> rates in sunflower crop under drought stress treatment. The findings reveal that improvement of root traits is worth attempting for the future crop behavioral responses under eCO<sub>2</sub> and drought stress environments. The study confirmed the beneficial effect of eCO<sub>2</sub> in maize and sunflower by ameliorating the adverse affects of drought stress.
Keywords	Helianthus annuus ; Zea mays ; carbon dioxide ; corn ; environment ; leaf water potential ; soil ; stomatal conductance ; water stress
Language	English
Dates of publication	2011-0516
Size	p. 207-215.
Publishing place	Czech Academy of Agricultural Sciences
Document type	Article
ZDB-ID	2104321-8
ISSN	1214-1178
ISSN	1214-1178
DOI	10.17221/346/2010-pse
Database	NAL-Catalogue (AGRICOLA)

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Article: Evaluation of certain rainfed food and oil seed crops for their response to elevated CO2 at vegetative stage

Vanaja, M. / Vagheera, P. / Ratnakumar, P. / Jyothi lakshmi, N. / Raghuram Reddy, P. / Yadav, S.K. / Maheswari, M. / Venkateswarlu, B.

Plant, Soil and Environment. , v. 52, no. 4

2011

Abstract: A study was conducted with two important rainfed food crops viz., sorghum (Sorghum bicolor L. Moench.) and blackgram (Vigna mungo L. Happer) and two oil seed crops viz., sunflower (Helianthus annuus L.) and groundnut (Arachis hypogaea L.) under two ... ...

Abstract	A study was conducted with two important rainfed food crops viz., sorghum (Sorghum bicolor L. Moench.) and blackgram (Vigna mungo L. Happer) and two oil seed crops viz., sunflower (Helianthus annuus L.) and groundnut (Arachis hypogaea L.) under two conditions viz., elevated CO<sub>2</sub> (600 ppm) and ambient CO<sub>2</sub> (365 ppm) in open top chambers (OTCs). The observations were recorded at the vegetative stage at 7, 14, 21 and 30 days after sowing (DAS). The results showed significant differences between crops, conditions and time intervals, as well as the single and double order interactions for all the characters studied viz., total dry weight, stem dry weight, root dry weight, leaf dry weight, shoot length, root length and leaf area. Total dry weight and its components viz., stem dry weight, root dry weight and leaf dry weight along with leaf area showed a significant increase under enhanced CO<sub>2</sub> conditions. Among the four crops studied the overall results showed the highest response to elevated CO<sub>2</sub> by blackgram while the lowest response by sorghum.
Keywords	Arachis hypogaea ; Helianthus annuus ; Sorghum bicolor ; Vigna mungo ; black gram ; carbon dioxide enrichment ; environment ; leaf area ; leaf dry mass ; peanuts ; soil ; vegetative growth
Language	English
Dates of publication	2011-1115
Size	p. 164-170.
Publishing place	Czech Academy of Agricultural Sciences
Document type	Article
ZDB-ID	2104321-8
ISSN	1214-1178
ISSN	1214-1178
DOI	10.17221/3361-pse
Database	NAL-Catalogue (AGRICOLA)

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Article: Effect of elevated atmospheric CO2 concentrations on growth and yield of blackgram (Vigna mungo L. Hepper) - a rainfed pulse crop

Vanaja, M. / Raghuram Reddy, P. / Jyothi Lakshmi, N. / Maheswari, M. / Vagheera, P. / Ratnakumar, P. / Jyothi, M. / Yadav, S.K. / Venkateswarlu, B.

Plant, Soil and Environment. , v. 53, no. 2

2008

Abstract: The response of blackgram ( ... Vigna mungo ... L. Hepper) to two levels of elevated carbon dioxide (550 and 700 ppm) in terms of growth and yield was investigated and compared with ambient CO ... 2 ... level (365 ppm) using open-top chambers. The growth ...

Abstract	The response of blackgram (Vigna mungo L. Hepper) to two levels of elevated carbon dioxide (550 and 700 ppm) in terms of growth and yield was investigated and compared with ambient CO<sub>2</sub> level (365 ppm) using open-top chambers. The growth parameters viz., length and weight of root and shoot, root:shoot ratio, leaf area and weight significantly increased at 700 ppm CO2 when compared with 550 ppm. The percentage increase in total biomass at 700 and 550 ppm CO<sub>2</sub> was 65.4% and 39%, respectively compared to the ambient (chamber) control. The increase in total seed yield at 700 ppm (129%) was due to an increase in number of pods per plant and 100 seed weight, whereas at 550 ppm (88.7%) it was due to an increased number of pods/plant and seeds/pod. The results indicate variable responsive effects at different levels of CO<sub>2</sub> emphasizing the pertinence of research on elevated CO<sub>2</sub> in various agroecological inhabitations all over the world. The indication of higher responses for root and leaf at initial growth stages at the higher elevated level of CO<sub>2</sub> (700 ppm), which leads to better root establishment, achieving early photosynthetic efficiency and also better biomass production, and its improved partitioning can be reckoned as a positive aspect of increasing concentrations of CO<sub>2</sub> in atmosphere. The harvest index increased significantly to 35.7 and 38.4% at 550 and 700 ppm, respectively; it is a very important phenomenon in pulses for breaking the yield barrier.
Keywords	Vigna mungo ; agroecology ; biomass production ; black gram ; carbon dioxide enrichment ; environment ; harvest index ; leaf area ; leaves ; photosynthesis ; root shoot ratio ; seed weight ; seed yield ; soil
Language	English
Dates of publication	2008-0107
Size	p. 81-88.
Publishing place	Czech Academy of Agricultural Sciences
Document type	Article
ZDB-ID	2104321-8
ISSN	1214-1178
ISSN	1214-1178
DOI	10.17221/2298-pse
Database	NAL-Catalogue (AGRICOLA)

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Article: Growth and yield responses of castor bean (Ricinus communis L.) at two enhanced CO2 levels

Vanaja, M. / Jyothi, M. / Ratnakumar, P. / Vagheera, P. / Raghuram Reddy, P. / Jyothi Lakshmi, N. / Yadav, S.K. / Maheshwari, M. / Venkateswarlu, B.

Plant, Soil and Environment. , v. 54, no. 1

2008

Abstract: Growth and yield responses of castor bean ( ... Ricinus communis ... L.) to two elevated CO ... 2 ... levels (550 and 700 ppm) were evaluated up to the maturity of first order spikes in open top chambers (OTCs). The growth characteristics – root and ... ...

Abstract	Growth and yield responses of castor bean (Ricinus communis L.) to two elevated CO<sub>2</sub> levels (550 and 700 ppm) were evaluated up to the maturity of first order spikes in open top chambers (OTCs). The growth characteristics – root and shoot lengths, root volume, root:shoot ratios, leaf area, dry weights of different plant parts, leaf area duration and crop growth rate increased with 550 and 700 ppm of CO<sub>2</sub> levels compared with ambient control. The spike length, pod and seed yield of first order spikes increased under enhanced CO<sub>2</sub> levels over ambient control. Elevated CO<sub>2</sub> levels significantly increased the total biomass and yield of castor bean, however enhanced CO<sub>2</sub> levels per se did not changed the content and quality of the castor oil. A positive response of castor bean to increased CO<sub>2</sub> concentrations is a good indication for its future existence in potentially changed climatic conditions.
Keywords	Ricinus communis ; biomass ; castor beans ; castor oil ; leaf area ; seed yield ; soil
Language	English
Dates of publication	2008-0114
Size	p. 38-46.
Publishing place	Czech Academy of Agricultural Sciences
Document type	Article
ZDB-ID	2104321-8
ISSN	1214-1178
ISSN	1214-1178
DOI	10.17221/386-pse
Database	NAL-Catalogue (AGRICOLA)

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Article: Growth and yield responses of castor bean (Ricinus communis L.) at two enhanced CO2 levels

Vanaja, M. / Jyothi, M. / Ratnakumar, P. / Vagheera, P. / Raghuram Reddy, P. / Jyothi Lakshmi, N. / Yadav, S.K. / Maheshwari, M. / Venkateswarlu, B.

Plant, Soil and Environment

2008

Abstract: Growth and yield responses of castor bean (Ricinus communis L.) to two elevated CO2 levels (550 and 700 ppm) were evaluated up to the maturity of first order spikes in open top chambers (OTCs). The growth characteristics - root and shoot lengths, root ... ...

Abstract	Growth and yield responses of castor bean (Ricinus communis L.) to two elevated CO2 levels (550 and 700 ppm) were evaluated up to the maturity of first order spikes in open top chambers (OTCs). The growth characteristics - root and shoot lengths, root volume, root:shoot ratios, leaf area, dry weights of different plant parts, leaf area duration and crop growth rate increased with 550 and 700 ppm of CO2 levels compared with ambient control. The spike length, pod and seed yield of first order spikes increased under enhanced CO2 levels over ambient control. Elevated CO2 levels significantly increased the total biomass and yield of castor bean, however enhanced CO2 levels per se did not changed the content and quality of the castor oil. A positive response of castor bean to increased CO2 concentrations is a good indication for its future existence in potentially changed climatic conditions.
Keywords	Kohlendioxid ; Biomasse ; Ertrag ; Pflanzenernaehrung ; Qualitaet ; Wachstum
Language	English
Edition	v. 54(1) p. 38-46
Document type	Article
ISSN	0370-663X
Database	ELFIS - Nutrition, agriculture and forestry information system

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