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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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NAAS Score: *5.38 (2019)
[Effective from January 1, 2019]
For more details click here

ICV 2017: 100.00
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2017: 100.00
For more details click here

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Int.J.Curr.Microbiol.App.Sci.2018.7(2): 71-82
DOI: https://doi.org/10.20546/ijcmas.2018.702.010


Flowering Stage Drought Stress Resistance in Upland Rice in Relation to Physiological, Biochemical Traits and Yield
B.K. Mishra1* and G.S. Chaturvedi2
1Department of Plant Physiology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi-221005, U. P., India
2Centre of Advance Studies in Plant Physiology and Department of Crop Physiology, Narendra Deva University of Agriculture and Technology, Narendra Nagar (Kumarganj), Faizabad-224229, U.P., India
*Corresponding author
Abstract:

Drought stress at flowering stage in upland rice is most damaging cause of yield reduction. Impact of drought stress at flowering stage on morphological, physiological and biochemical traits, yield and yield components are less understood. Present experiment was executed in pots under glass house conditions by taking six upland rice varieties namely Bagri, Nankawa, Bakaiya, N-22, Ashoka-228 and NDR-97. Drought stress at (80 KPa±2 SMT) was imposed by withholding irrigation at 50% flowering stage. We observed drought stress significantly affects all investigated traits. Plants having lower plant height, higher reduction in leaf area, higher root volume and root/shoot ratio under drought was well adapted to drought. Higher leaves chlorophyll content and lesser reduction under drought, increased accumulation of soluble sugar in culm, leaf sheath and leaf blade and more reduction in starch content were linked with better drought resistance in upland rice. Higher proline content in leaves, higher biomass, higher panicle number, higher percent fertile spikelets were the traits associated with higher grain yield under drought stress. Among all studied varieties N-22 exhibited the above desired traits at flowering stage drought resistance may be considered as drought resistant. NDR-97 and Ashoka-228 were moderately resistant, while Bagri was found most sensitive among all. It is concluded from the present experiment that N-22 can be used as parent donor in upland rice breeding programme and the investigated traits can be used as selection criterion.


Keywords: Upland rice, Drought stress, Flowering, Plant height, Leaf area, Chlorophyll, Root/shoot ratio, Proline, Sugar, Grain yield
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How to cite this article:

Mishra, B.K. and Chaturvedi, G.S. 2018. Flowering Stage Drought Stress Resistance in Upland Rice in Relation to Physiological, Biochemical Traits and Yield.Int.J.Curr.Microbiol.App.Sci. 7(2): 71-82. doi: https://doi.org/10.20546/ijcmas.2018.702.010