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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 (2019)
[Effective from January 1, 2019]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2017 - 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 2017: 100.00
NAAS RATING 2018: 5.38

Int.J.Curr.Microbiol.App.Sci.2018.7(1): 2054-2062
DOI: https://doi.org/10.20546/ijcmas.2018.701.247


Physiological and Biochemical Responses in Onion Crop to Drought Stress
P.H. Ghodke*, P.S. Andhale, U.M. Gijare, A. Thangasamy,Y.P. Khade, V. Mahajan and M. Singh
(Plant Physiology) ICAR-Directorate of Onion and Garlic Research,Rajgurunagar, Pune, India
 
*Corresponding author
Abstract:

Drought is one of the major abiotic constraints limiting onion world-wide. To address the issue, study was conducted to investigate the effect of drought on morpho-physiological and biochemical parameters in onion variety Bhima Kiran in Rabi 2016. Drought stress was imposed on well-established seedlings by with-holding irrigation for continuous 40 days. The soil moisture and plant water status decreased gradually as the drought stress progresses beyond 30 days. Result showed that drought stress significantly reduces the leaf length and leaf area without any significant variation for other morphological traits namely, leaves per plant, height, pseudo-stem length and diameter. The onion variety Bhima Kiran maintains chlorophyll content confirming its functional stay-green property and accumulate higher proline, total soluble solids and antioxidant enzyme activity in response to drought as one of the tolerance mechanism. Water deficit stress lead to 65% yield reduction with more C grade bulbs (< 30mm). Additionally, slightly decreases in quality parameters like protein, phenol, flavanoids and pyruvic acid in bulbs were observed subjected to drought. Hence, the popular Rabi onion variety Bhima Kiran respond to drought stress by altering it biochemical pathway and thereby maintain its survival under stress. This finding briefly highlights the drought tolerance mechanisms in Bhima Kiran but future research needs to be focused on improving its yield potential for drought prone areas.


Keywords: Onion, Drought, Physiological, Biochemical, Growth and yield
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How to cite this article:

Ghodke, P.H., P.S. Andhale, U.M. Gijare, A. Thangasamy, Y.P. Khade, V. Mahajan and Singh, M. 2018. Physiological and Biochemical Responses in Onion Crop to Drought Stress.Int.J.Curr.Microbiol.App.Sci. 7(1): 2054-2062. doi: https://doi.org/10.20546/ijcmas.2018.701.247