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17. Stay-green trait ameliorates combined heat and drought stress in wheat

Author

Kumar, R., Harikrishna, Ghimire, O. P., Barman, D., Chinnusamy, V., Pradeep Kumar Singh, Padaria, J. C., Suman, A., and Arora, A.

Subjects
Agronomy and Crop Science
Abstract

The present study was carried out during rabi 2017-18 at ICAR-Indian Agricultural Research Institute, New Delhi to investigate the effect of stay-green trait on grain yield in wheat under combined heat and drought stress. Two high stay green (GCP 6 and GCP 33) and two low stay green (GCP 23 and GCP 30) Recombinant Inbred Lines (RILs) of wheat along with their parents (HI1500/DBW43) were grown in field conditions under timely sown with irrigation (control) and without irrigation (drought stress), and late sown with irrigation (heat stress) and without irrigation (combined heat and drought stress). High stay-green RILs showed the reduced levels of abscisic acid and ethylene production during anthesis stage under heat, drought and combined stress conditions as compared to low stay green RILs. Furthermore, there was significantly better yield was observed in high stay-green RILs as compared to low stay-green RILs. Thus our study concludes that stay-green traits improve the yield in wheat under combined heat and drought stress condition by delaying the senescence through reduced levels of abscisic acid and ethylene.

Published
2022
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20. Slotted Aloha with Priorities and Random Power

Author

Altman, E., Barman, D., Benslimane, A., El Azouzi, R., Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Boutaba, Raouf, editor, Almeroth, Kevin, editor, Puigjaner, Ramon, editor, Shen, Sherman, editor, and Black, James P., editor

Published
2005
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27. Trade-off between soil aggregate stability and carbon decomposition under 44 years long-term integrated nutrient management in rice-wheat-jute system.

Author

Mazumdar, S P, Bhattacharya, R., Saha, A R, Majumdar, B, Kundu, D K, Behera, M S, Ghorai, A K, Barman, D, Saha, R, Padhy, S R, Kar, G, and Bhattacharyya, P

Subjects
SOIL structure, CROPPING systems, INCEPTISOLS, FARM manure, SOIL dynamics, AGRICULTURAL intensification
Abstract

Soil stability, yield decline and higher carbon decomposition are the key issues in intensive agriculture. Long-term integrated nutrient management (INM) influences carbon (C) dynamics and maintains the soil aggregate stability, which driven by the type of cropping system and climatic zone. Therefore, the specific effects of rice-wheat-jute cropping system on soil aggregate distribution, C-stability, and trade-off between C-storage and decomposition rate were studied of a long-term INM trial in the sub-tropical zone. We investigated the effect of four long-term nutrient management practices that include, control, N (nitrogen (N) and no phosphorus (P), and potassium (K)), NPK (N, P and K) and INM (N, P, K + farmyard manure (FYM)). Results showed that the addition of FYM with NPK improved macro-aggregates by 71%, and associated C-pools by 30%. The INM enhanced C-storage (20%), however, the decomposition rate was also higher (28%) over control at 35 °C at field capacity. A trade-off exists between the soil-aggregate stabilization and C-decomposition rate. The proportion of C-storage was higher than decomposition in INM. Further, the C-sequestration varied (0.17 to 0.26 t ha−1 y−1) under different treatments and were found highest in INM, indicating long-term soil stability and yield sustainability in the rice-wheat-jute system. [ABSTRACT FROM AUTHOR]

Published
2023
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45. Trade-off between soil aggregate stability and carbon decomposition under 44 years long-term integrated nutrient management in rice-wheat-jute system

Author

Mazumdar, S P, primary, Bhattacharya, R., additional, Saha, A R, additional, Majumdar, B, additional, Kundu, D K, additional, Behera, M S, additional, Ghorai, A K, additional, Barman, D, additional, Saha, R, additional, Padhy, S R, additional, Kar, G, additional, and Bhattacharyya, P, additional

Published
2021
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