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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39 For more details click here
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39
For more details click here

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Original Research Articles

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2020.9(5): 2951-2959
DOI: https://doi.org/10.20546/ijcmas.2020.905.350


Effect of Moderate Drought Stress on Photosynthetic Rate and Grain Yield in Finger Millet Genotypes
Y.A. Nanja Reddy1,2*, Jayarame Gowda2, E.G. Ashok2 and K.T. Krishne Gowda2
1Department of Crop Physiology
2AICRP on Small Millets, University of Agricultural Sciences, GKVK, Bangalore 560065, Karnataka, India
*Corresponding author
Abstract:

In the changing climate scenario, drought could be continued as a major abiotic limitation for crop productivity. Finger millet although known for its drought tolerance, the drought stress decreases the grain yield from 25 to 100 percent depending on the duration and magnitude of drought stress. Present study was conducted to explore the genetic variability of selected genotypes over the ruling varieties if any, based on the extent of reduction in grain yield, and dependent photosynthetic traits due to moderate drought stress for 18 to 20 days (grand growth to flower primordial initiation). Five selected genotypes were compared with three released varieties under field condition by withholding the irrigation for stress treatment. Moderate drought stress for a period of 18 to 20 days decreased the photosynthetic rates markedly due to decreased stomatal conductance and transpiration rates. However, yield reduction was less than 6.0 per cent in released varieties. Correlations and path analysis proved that, the mean ear weight and productive tillers per hill are important in yield determination of finger millet under drought condition. Among the varieties, Cv. PR-202 found relatively drought tolerant and this variety can be used as check for screening germplasm accessions against the drought stress. It is concluded that, moderate drought stress for 18 to 20 days with pan evaporation of around 4 mm per day is not a serious limitation under rainfed situations during kharif seasons.


Keywords: Finger millet, Photosynthetic rate, Mean ear weight, Grain yield
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How to cite this article:

Nanja Reddy, Y.A., Jayarame Gowda, E.G. Ashok and Krishne Gowda, K.T. 2020. Effect of Moderate Drought Stress on Photosynthetic Rate and Grain Yield in Finger Millet Genotypes.Int.J.Curr.Microbiol.App.Sci. 9(5): 2951-2959. doi: https://doi.org/10.20546/ijcmas.2020.905.350