Influence of Exogenous Glycinebetaine on Hot Pepper under Water Stress
DOI:
https://doi.org/10.24154/jhs.v9i2.186Keywords:
Glycinebetaine, Hot Pepper, Photosynthesis, Stomatal ConductanceAbstract
A study was conducted to evaluate the effect of exogenous application of glycinebetaine (GB) on physiological response in hot-pepper (Capsicum annuum L. vs. Arka Lohit and Pusa Jwala) under water stress. Glycinebetaine was applied to seeds as well as plants through foliar applications. Water stress affected considerably the morphophysiological parameters in both the cultivars. However, in glycinebetaine (GB) treated plants, plant height, leaf area (LA), flower and fruit number and total dry matter (TDM) were greater compared to the untreated stress plants (T4) under water stress. Glycinebetaine application enhanced the photosynthesis (PN) in water deficit experiencing plants, mostly due to a greater stomatal conductance (gs) and carboxylation efficiency of CO2 assimilation. In both the cultivars after 12 day of stress, the PN decreased from 10.1 to 1.0-1.3 μ mol m-2 s-1 in untreated stressed plants (T4), while in the treated stressed plants PNhad reduced to 2.0 - 3.0 μ mol m-2 s-1 (T1 - T3). The application of GB increased the WUE in both the cultivars. The better WUE in treated plants of hot-pepper under stress was attributed to the improved PN. The higher per plant yield in the GB applied plants under stress in both the cultivars associated with higher PNrate, gs and WUE in treated plants. Though there was an increase in PN rate, WUE and plant yield in the treated plants (T1 - T3), the better results were found in the plants (T2) where seeds were treated and foliar application was given at the time of imposing stress.
Downloads
References
Bohnert, H.J.D.E., Nelson, R. and Ensen, R.E. 1995. Adaptation to environmental stresses. Pl. Cell, 7:1099-1111
Boyer, J.S. 1982. Plant productivity and environment. Sci., 218:443-448
Burnett, M., Lafontaine, P.J. and Hanson, A.D. 1995. Assay, purification and partial characterization of choline monooxygenase from spinach. Pl. physiol., 168:581-588
Hanson, A.D. and Wyse, R. 1982. Biosynthesis, translocation and accumulation of betaine in sugar beet and its progenitors in relation to salinity. Pl. Physiol., 70:1191-1198
Hussain, M., Farooq, M., Jabran, K., Rehman, H. and Akram, M. 2008. Exogenous glycinebetaine application improves yield under water-limited conditions in hybrid sunflower. Arch Agron Soil Sci., 54:557-567
Ma, X.L., Wang, Y.J., Xie, S.L., Wang, C. and Wang, W. 2007. Glycinebetaine application ameliorates negative effects of drought stress in tobacco. Russian J. of Pl. Physiol., 54:472-479
Makela, P., Kontturi, M., Pehu, E. and Somersalo, S. 1999. Photosynthetic response of drought and salt-stresses tomato and turnip rape plant to foliar-applied glycine betaine. Physiol. Pl., 105:45-50
Makela, P., Peltonenasainio, P., Jokinen, K., Pehu, E., Setala, H., Hinkkanen, R. and Somersalo, S. 1996. Uptake and translocation of foliar-applied glycinebetaine in crop plants. Pl. sci., 121:221-234
Muhammad Iqbal Makhdum and Shabab-ud-Din. 2007. Influence of foliar application of glycinebetaine on gas exchange characteristics of cotton Gossypium hirsutum L. J.res. Sci., B.Z. Univ. 181:13-17
Sakamoto, A. and Murata, N. 2002. The role of glycinebetaine in protection of plants from stress: Clues from transgenic plants. Pl. Cell Environ., 25:163-171
Xing, W. and Rajashekar, C.B. 1999. Alleviation of water stress in beans by exogenous glycinebetaine. Pl. Sci., 148:185-195
Downloads
Published
Issue
Section
License
Copyright (c) 2014 R M Bhatt, N K Srinivasa Rao, A. D. D. V. S. Nageswara Rao (Author)
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Authors retain copyright. Articles published are made available as open access articles, distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original author and source are credited. 
This journal permits and encourages authors to share their submitted versions (preprints), accepted versions (postprints) and/or published versions (publisher versions) freely under the CC BY-NC-SA 4.0 license while providing bibliographic details that credit, if applicable.
How to Cite
. 
