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

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.

[1]  Shahid Ali,et al.  Implications of Abscisic Acid in the Drought Stress Tolerance of Plants , 2020, Agronomy.

[2]  H. Tsujimoto,et al.  Stay-Green Trait: A Prospective Approach for Yield Potential, and Drought and Heat Stress Adaptation in Globally Important Cereals , 2019, International journal of molecular sciences.

[3]  Bohdan Dukhnytskyi.  World agricultural production , 2019, Ekonomika APK.

[4]  M. Samuel,et al.  Abiotic Stress Signaling in Wheat – An Inclusive Overview of Hormonal Interactions During Abiotic Stress Responses in Wheat , 2018, Front. Plant Sci..

[5]  A. Ferrante,et al.  Ethylene Role in Plant Growth, Development and Senescence: Interaction with Other Phytohormones , 2017, Front. Plant Sci..

[6]  Muhammad Farooq,et al.  Drought Stress in Wheat during Flowering and Grain-filling Periods , 2014 .

[7]  H. Rolletschek,et al.  ABA biosynthesis and degradation contributing to ABA homeostasis during barley seed development under control and terminal drought-stress conditions. , 2011, Journal of experimental botany.

[8]  P. Prasad,et al.  Ethylene production under high temperature stress causes premature leaf senescence in soybean , 2010 .

[9]  Hao Zhang,et al.  Hormones in the grains and roots in relation to post-anthesis development of inferior and superior spikelets in japonica/indica hybrid rice. , 2009, Plant physiology and biochemistry : PPB.

[10]  Q. Qian,et al.  Mutations of genes in synthesis of the carotenoid precursors of ABA lead to pre-harvest sprouting and photo-oxidation in rice , 2008, The Plant journal : for cell and molecular biology.

[11]  E. Zdunek-Zastocka.  Molecular cloning, characterization and expression analysis of three aldehyde oxidase genes from Pisum sativum L. , 2008, Plant physiology and biochemistry : PPB.

[12]  J. Passioura.  The drought environment: physical, biological and agricultural perspectives. , 2006, Journal of experimental botany.

[13]  Lijun Liu,et al.  Abscisic acid and ethylene interact in wheat grains in response to soil drying during grain filling. , 2006, The New phytologist.

[14]  Patrick Achard,et al.  Integration of Plant Responses to Environmentally Activated Phytohormonal Signals , 2006, Science.

[15]  N. Khan.  The influence of exogenous ethylene on growth and photosynthesis of mustard (Brassica juncea) following defoliation , 2005 .

[16]  P. He,et al.  Endogenous hormones and expression of senescence-related genes in different senescent types of maize , 2022 .

[17]  J. Guiamet,et al.  Ethylene as promoter of wheat grain maturation and ear senescence , 1994, Plant Growth Regulation.

[18]  K. Sahu,et al.  A Re-examination of the , 2001 .

[19]  G. S. Premachandra,et al.  Cell membrane stability, an indicator of drought tolerance, as affected by applied nitrogen in soyabean , 1990, The Journal of Agricultural Science.

[20]  J. Zeevaart.  Changes in the Levels of Abscisic Acid and Its Metabolites in Excised Leaf Blades of Xanthium strumarium during and after Water Stress. , 1980, Plant physiology.

[21]  J. Hiscox,et al.  A method for the extraction of chlorophyll from leaf tissue without maceration , 1979 .

[22]  H. Barrs,et al.  A Re-Examination of the Relative Turgidity Technique for Estimating Water Deficits in Leaves , 1962 .

[23]  P. Derfler,et al.  The United States Department of Agriculture , 1872, Nature.